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Old 09-20-2013, 10:00 PM   #1
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Acceleration problem

Was really noticing tonight during my back road session that hard acceleration from 1-2 feels like I'm not getting all the power the car has then in 3rd it really kicks in. What could be causing this?
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Old 09-20-2013, 10:41 PM   #2
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Originally Posted by Redstang1 View Post
Was really noticing tonight during my back road session that hard acceleration from 1-2 feels like I'm not getting all the power the car has then in 3rd it really kicks in. What could be causing this?
When I rip mine, I turn Traction Control Off. You?
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Old 09-20-2013, 11:46 PM   #3
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When I rip mine, I turn Traction Control Off. You?
What's the difference by turning it on or off? Shouldn't it perform the same
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Old 09-21-2013, 12:16 AM   #4
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What's the difference by turning it on or off? Shouldn't it perform the same
You break 'em loose with TC on, acceleration will be retarded to regain traction.

PRINCIPLES OF OPERATION
The traction control system helps avoid drive wheel spin and loss of traction. If your vehicle begins to slide, the system applies the brakes to individual wheels and, when needed, reduces engine power at the same time. If the wheels spin when accelerating on slippery or loose surfaces, the system reduces engine power in order to increase traction.

USING TRACTION CONTROL
In certain situations (for example, stuck in snow or mud), turning the traction control off may be beneficial as this allows the wheels to spin with full engine power. Turn the traction control system off by pressing the stability control button located on the center console.
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Old 09-21-2013, 02:01 AM   #5
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When I rip mine, I turn Traction Control Off. You?
Ya always. It just feels like it's starved for power or like I'm not pressing the pedal down all the way. Idk what it is but I am going to get a R2C intake and updated tune from kurgan motorsports here in a little bit so maybe he can diagnose it and fix it. But if anybody knows anything it could be input is great appreciated
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Old 09-21-2013, 04:50 AM   #6
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Ya always. It just feels like it's starved for power or like I'm not pressing the pedal down all the way. Idk what it is but I am going to get a R2C intake and updated tune from kurgan motorsports here in a little bit so maybe he can diagnose it and fix it. But if anybody knows anything it could be input is great appreciated
tune helped me out a lot. Makes it feel the same power all the way through. And I got aggressive shift points. :aggressiveshiftpoints: wow
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Old 09-21-2013, 08:31 AM   #7
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Look behind you, there may be 11s in your rear view mirror...in first and second I can light the Brembo Pirellis at will, not a peep out of them but, nice long stripes on the road.
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Old 09-21-2013, 11:33 AM   #8
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tune helped me out a lot. Makes it feel the same power all the way through. And I got aggressive shift points. :aggressiveshiftpoints: wow

Well I already have a dyno from him but I'm having these problems so I'm going to have to take it back and he said he would gives the R2C intake (which isn't even available to the public) for 200-250 so I figured why not, 200-250 for 10-15whp isn't that bad and it looks damn good under the hood

---------- Post added at 10:33 AM ---------- Previous post was at 10:31 AM ----------

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Look behind you, there may be 11s in your rear view mirror...in first and second I can light the Brembo Pirellis at will, not a peep out of them but, nice long stripes on the road.
I've got 275's on the rear so that can't be it. It hooks up great and I'm running 4.2-4.3 0-60 if I get my launch right but it just feels like the car has more. It put down 430whp btw
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Old 09-21-2013, 12:22 PM   #9
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Look behind you, there may be 11s in your rear view mirror...in first and second I can light the Brembo Pirellis at will, not a peep out of them but, nice long stripes on the road.
Yeah, that's the ticket. Mine has no problem quietly roasting Pirellis either. I shut Advancetrac off a few weeks ago and turned her loose. She was plumb scary through 4th and still spinning. Bad thing was, she started turning sideways on me. Not real smart, but my heart rate was elevated and adrenaline was flowing like a fire hose all the way back to town.
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Old 09-22-2013, 12:05 AM   #10
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Originally Posted by Redstang1 View Post

Well I already have a dyno from him but I'm having these problems so I'm going to have to take it back and he said he would gives the R2C intake (which isn't even available to the public) for 200-250 so I figured why not, 200-250 for 10-15whp isn't that bad and it looks damn good under the hood

---------- Post added at 10:33 AM ---------- Previous post was at 10:31 AM ----------



I've got 275's on the rear so that can't be it. It hooks up great and I'm running 4.2-4.3 0-60 if I get my launch right but it just feels like the car has more. It put down 430whp btw
4.2 to 4.3 0-60? That's pretty fast. What mods beside the 275 tires? Tune alone doesn't sound will get you these numbers. What gear ratio do you have? Thanks
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Old 09-22-2013, 08:35 AM   #11
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4.2 to 4.3 0-60? That's pretty fast. What mods beside the 275 tires? Tune alone doesn't sound will get you these numbers. What gear ratio do you have? Thanks
I have 275's on the back and that don't help me not spin. With trac control fulling on I will still spin them. I plan on going 305's after about 200 more red lights. But do you have suspension mods also?? Or are your tires just that much better than mine. I'm running nittos.
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Old 09-22-2013, 09:38 AM   #12
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I have 275's on the back and that don't help me not spin. With trac control fulling on I will still spin them. I plan on going 305's after about 200 more red lights. But do you have suspension mods also?? Or are your tires just that much better than mine. I'm running nittos.
I think your question is to the original poster claiming 4.2. I just have everything stock including tires. Only mod is lowering springs, LCAs and UCA. My best is 4.9 for 0-60 on a 3.31 MT gear. Cheers
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Old 09-22-2013, 09:44 AM   #13
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I think your question is to the original poster claiming 4.2. I just have everything stock including tires. Only mod is lowering springs, LCAs and UCA. My best is 4.9 for 0-60 on a 3.31 MT gear. Cheers
Lol. Yeah. My bad.
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Old 09-22-2013, 10:53 AM   #14
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Originally Posted by Alkhalil View Post
4.2 to 4.3 0-60? That's pretty fast. What mods beside the 275 tires? Tune alone doesn't sound will get you these numbers. What gear ratio do you have? Thanks
3.73's, springs, cat deletes, xpipe, pypes mid back exhaust, tune, lca's and a few other things I know I'm forgetting
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Old 09-22-2013, 10:59 AM   #15
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With my mods on the dyno kurgan said I should be around 380-390 car ended up putting down 430whp and I think it was 414 wtq. Like I said it's still fast jus feels like it should be faster
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Old 09-22-2013, 11:25 AM   #16
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Could be the advancetrak pulling some of your power to maintain some traction. I notice that it's a hell of a lot easier to break my *** end loose when advancetrak is off compared to 'sport' or normal.

It's part of my routine when I turn her on (and it's not wet out). Hold brake, hold TC switch for 5 seconds - advancetrak off / TC off, pull out of garage.

Don't underestimate how invasive the nannies are
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Old 09-22-2013, 11:26 AM   #17
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Could be the advancetrak pulling some of your power to maintain some traction. I notice that it's a hell of a lot easier to break my *** end loose when advancetrak is off compared to 'sport' or normal. It's part of my routine when I turn her on (and it's not wet out). Hold brake, hold TC switch for 5 seconds - advancetrak off / TC off, pull out of garage. Don't underestimate how invasive the nannies are

I normally just turn traction control off. Is that not everything off?
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Old 09-22-2013, 11:39 AM   #18
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I just turned everything off and it did actually help
I still think it feels a little off but ya it helped
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Old 09-22-2013, 12:09 PM   #19
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Originally Posted by Redstang1 View Post

3.73's, springs, cat deletes, xpipe, pypes mid back exhaust, tune, lca's and a few other things I know I'm forgetting
Fastest ever 0-60 time for me was 4.3s.

CAI
Race tune from BAMA
Cat back
Sportline drop
Stock Pirelli 255/40/19
AND 28 degree weather

Now after I got straight pipes, LCA and relocation bracket, hybrid tune, and 285/30/20 Nitto 555, I pulled only a 4.4s one time and usually 4.6 or 4.7... But weather has been 95-105 degrees XD

I wish cooler months are hear already lol
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Old 09-22-2013, 01:19 PM   #20
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Fastest ever 0-60 time for me was 4.3s. CAI Race tune from BAMA Cat back Sportline drop Stock Pirelli 255/40/19 AND 28 degree weather Now after I got straight pipes, LCA and relocation bracket, hybrid tune, and 285/30/20 Nitto 555, I pulled only a 4.4s one time and usually 4.6 or 4.7... But weather has been 95-105 degrees XD I wish cooler months are hear already lol
Ya it's really not all that hard once you get the clutch right and you warm your tires to get consistent 4.3-4.6 0-60
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Old 09-22-2013, 03:31 PM   #21
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Fastest ever 0-60 time for me was 4.3s.

CAI
Race tune from BAMA
Cat back
Sportline drop
Stock Pirelli 255/40/19
AND 28 degree weather

Now after I got straight pipes, LCA and relocation bracket, hybrid tune, and 285/30/20 Nitto 555, I pulled only a 4.4s one time and usually 4.6 or 4.7... But weather has been 95-105 degrees XD

I wish cooler months are hear already lol

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Ya it's really not all that hard once you get the clutch right and you warm your tires to get consistent 4.3-4.6 0-60
I'm running 3.31 gears. Can't wait to get 3.73. Launching is rough for me. Can't perfectly dial in the right amount of wheel spin on launch.

Just ran a couple more runs coming back home from lunch. 4.5s.

Can someone with 3.31 gears share how they launch? And of course their setup. Thanks!
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Old 09-22-2013, 03:43 PM   #22
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I'm running 3.31 gears. Can't wait to get 3.73. Launching is rough for me. Can't perfectly dial in the right amount of wheel spin on launch. Just ran a couple more runs coming back home from lunch. 4.5s. Can someone with 3.31 gears share how they launch? And of course their setup. Thanks!
3.31's are better for roll racing but 3.73's are better for dig racing
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Old 09-22-2013, 05:11 PM   #23
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Originally Posted by DallasStang77 View Post

I'm running 3.31 gears. Can't wait to get 3.73. Launching is rough for me. Can't perfectly dial in the right amount of wheel spin on launch.

Just ran a couple more runs coming back home from lunch. 4.5s.

Can someone with 3.31 gears share how they launch? And of course their setup. Thanks!
What mods do you have on your 5.0?
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Old 09-22-2013, 08:20 PM   #24
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What mods do you have on your 5.0?
Texas temperature today was 85 degrees.

Mods:
CAI
Straight pipes
Hushpower cat back
BAMA hybrid tune
JM LCA
FRPP Relocation Bracket
Eibach Sportline
285/30/20 Nitto 555
Stock 3.31 gears
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Old 09-22-2013, 09:31 PM   #25
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Texas temperature today was 85 degrees.

Mods:
CAI
Straight pipes
Hushpower cat back
BAMA hybrid tune
JM LCA
FRPP Relocation Bracket
Eibach Sportline
285/30/20 Nitto 555
Stock 3.31 gears
Sir, that is a really nice list of mods. I must say with all respect but I thought your 0-60 times would be considerable lower with all your mods. I was under the impression that STOCK 5.0's were running 0-60 mph in around 4.4 seconds. You must be having some serious traction issues for your 0-60 mph times. I would of thought your 0-60 times with your mods would be around 4.1 to 4.2 seconds. It just goes to show that all that extra HP and torque doesn't always get the best acceleration because one can't keep the tires from spinning when floored from a dead stop. Lol
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Old 09-22-2013, 09:36 PM   #26
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Sir, that is a really nice list of mods. I must say with all respect but I thought your 0-60 times would be considerable lower with all your mods. I was under the impression that STOCK 5.0's were running 0-60 mph in around 4.4 seconds. You must be having some serious traction issues for your 0-60 mph times. I would of thought your 0-60 times with your mods would be around 4.1 to 4.2 seconds. It just goes to show that all that extra HP and torque doesn't always get the best acceleration because you can't keep the tires from spinning when floored from a dead stop. Lol

Na there's no way. It's sorta like Chevy claiming the new vette does 0-60 in 3.5 or 3.9 or something like that and when motortrend tested it the best they could get was 4.4. Soundless your a pro driver you can't get a new 5.0 to 4.4 stock
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Old 09-22-2013, 09:37 PM   #27
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Na there's no way. It's sorta like Chevy claiming the new vette does 0-60 in 3.5 or 3.9 or something like that and when motortrend tested it the best they could get was 4.4. Soundless your a pro driver you can't get a new 5.0 to 4.4 stock
What are the stock 5.0's running 0-60 then?
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Old 09-22-2013, 09:39 PM   #28
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What are the stock 5.0's running 0-60 then?
Best I could do was 4.9-5.0. The stock tires are **** so you spin through 3rd even in stock tune
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Old 09-22-2013, 10:01 PM   #29
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What are the stock 5.0's running 0-60 then?
I ran a 4.7 with only the Roush axlebacks on at the time. 3.55's, 6 spd manual. So virtually stock
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Old 09-22-2013, 10:07 PM   #30
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Best I could do was 4.9-5.0. The stock tires are **** so you spin through 3rd even in stock tune
Wow. How about that. All that extra torque and HP the 5.0 has and yet the stock tires are poor so you can't put the power down to the pavement. Your times are with 3:31 gears too boot correct?

---------- Post added at 11:07 PM ---------- Previous post was at 11:06 PM ----------

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I ran a 4.7 with only the Roush axlebacks on at the time. 3.55's, 6 spd manual. So virtually stock
Do you run the factory tires on yours and if so, do you have traction issues like the other member?
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Old 09-22-2013, 10:07 PM   #31
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Wow. How about that. All that extra torque and HP the 5.0 has and yet the stock tires are poor so you can't put the power down to the pavement. Your times are with 3:31 gears too boot correct?
No I've always had 3.73's, got it as a option from the factory. So that's probably why I spun
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Old 09-22-2013, 10:10 PM   #32
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Sir, that is a really nice list of mods. I must say with all respect but I thought your 0-60 times would be considerable lower with all your mods. I was under the impression that STOCK 5.0's were running 0-60 mph in around 4.4 seconds. You must be having some serious traction issues for your 0-60 mph times. I would of thought your 0-60 times with your mods would be around 4.1 to 4.2 seconds. It just goes to show that all that extra HP and torque doesn't always get the best acceleration because one can't keep the tires from spinning when floored from a dead stop. Lol
Keep in mind that these so called benchmark 0-60mph times are the fastest times they log in by people who do it for a living.

Wouldn't be as sexy a name if they called it the AVERAGE 0-60mph test. Same thing with dyno runs. People usually boast their highest number neglecting that subsequent runs before and after are different. If they didn't care about this best number then they would run dyno runs back to back to back to back.

Also, Motor Trend test their cars I believe in Cali and usually not during mid of day when temp is high. They will do it in the morning or the evening.

For the average person, he/she will not likely see the stated times. Also, MOTOR TREND RAN 3.73 GEARS. I have 3.31 much taller means harder to launch and dial in gas + less efficiency of accelerating throughout the bandwidth = slower times than a comparable 3.73 geared car.

And no my list of mods is not impressive at all. Three (four if you count the test pipes) power mods and three suspension mods.
I'm not a pro driver. I WOT my car maybe 2 times a week for a full run. Not a pro driver here never claimed to be else I wouldn't be asking people on their methods for best launch.

So what's your best time and how do you launch?
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Old 09-22-2013, 10:10 PM   #33
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No I've always had 3.73's, got it as a option from the factory. So that's probably why I spun
Oh dang. Yeah. Those 3:73 gears are wicked. No wonder your spinning. 420 HP, 390 torque with 3:73 gears on the factory tires. Lol. You need drag radials to launch with your mods. Lol
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Old 09-22-2013, 10:12 PM   #34
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Do you run the factory tires on yours and if so, do you have traction issues like the other member?
Yup. It's tough to keep them from spinning until I hit third
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Old 09-22-2013, 10:23 PM   #35
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Keep in mind that these so called benchmark 0-60mph times are the fastest times they log in by people who do it for a living.

Wouldn't be as sexy a name if they called it the AVERAGE 0-60mph test. Same thing with dyno runs. People usually boast their highest number neglecting that subsequent runs before and after are different. If they didn't care about this best number then they would run dyno runs back to back to back to back.

Also, Motor Trend test their cars I believe in Cali and usually not during mid of day when temp is high. They will do it in the morning or the evening.

For the average person, he/she will not likely see the stated times. Also, MOTOR TREND RAN 3.73 GEARS. I have 3.31 much taller means harder to launch and dial in gas + less efficiency of accelerating throughout the bandwidth = slower times than a comparable 3.73 geared car.

And no my list of mods is not impressive at all. Three (four if you count the test pipes) power mods and three suspension mods.
I'm not a pro driver. I WOT my car maybe 2 times a week for a full run. Not a pro driver here never claimed to be else I wouldn't be asking people on their methods for best launch.

So what's your best time and how do you launch?
Well no pro driver here either my friend. I don't even have a 5.0. Lol. I'm running an 11 V6. I have a 91 hybrid tune and 91 MPT race performance tune. I've got my MPT tune loaded up into my car for several months now. Along with Airraid CAI, BBK ceramic long tube headers, off road X pipe, one piece aluminum driveshaft, 3:73 gears, Flowmaster Force II axle back exhaust and Boss Strut tower brace. Also running on my factory Michelin 215/65/17 tires.

I have been able to run 0-60 MPH between 4.6 to 4.8 seconds. I also have an automatic so my launch method is real simple. I'm stopped and rpm is normal level, around 500 rpm idol speed. I keep my left foot on the brake. I have my right foot over the gas pedal. I quickly remove my left foot off the brake while simultaneously slam my right foot on the gas pedal flooring it. Away we go. It launches hard. I am able to chirp 2nd gear at 40 mph and again another chirp in 3rd gear hitting 70 mph with my MPT tune.
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