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Old 09-10-2013, 07:07 AM   #1
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ok ok, wtf is up with my car???

Last year, 4:10 gears, tune, and drag radials best time of 12.2

This year, 4:10 gears, tune, panhard bar, LCA, Cold air intake, Cat deletes, Drag radials, 50 Shot of Nitrous, and yes 12.2 best time !!!!!!

Traction is off this year with the additive of the control arms and what not, and the car is so inconsistent with the tunes, and I can tell the car is all over the place..
My car should be 11s all day with all motor, and deep 11's with my 100 shot!


WHY WHY WHY???
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Old 09-10-2013, 08:34 AM   #2
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Whats your et and 60 foot
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Old 09-10-2013, 08:44 AM   #3
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last year 1.91 this year 1.97 sixty foot
last year ran 12.22 @ 113 this year 12.20 @ 116 with the 50 shot!
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Old 09-10-2013, 08:52 AM   #4
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Weather and such and effect times, are u shifting at the same rpm as last time? make sure u aren't spinning wen u nos
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Old 09-10-2013, 08:53 AM   #5
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the car is so inconsistent with the tunes, and I can tell the car is all over the place..
What kind of Tune is on the car?
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Old 09-10-2013, 09:06 AM   #6
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Find a reputable shop and have it tuned on the Dyno.
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Old 09-10-2013, 09:59 AM   #7
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Stick? Get rid of the DRs to the nearest auto guy. real slicks are needed with the MT for consistency.

Are you tuned for the shot? Basically any shot on a 5.0 needs a tune to run right. I wish this wasn't so but, it is. I'd love to small dry shot myself to 11.50-ish but don't want to run around on a jug tune all the time.

I'd say since you're making more mph, the problem is up front, with getting the power down and finding the sweet spot for launch rpm. DRs make this hard to do on a stick.
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Old 09-10-2013, 11:00 AM   #8
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Sorry, my car is auto, and I have been doing this for years, and I can tell the car just doesnt seem to like the mods, I have a BAMA tune, and these guys have been very helpful, maybe I should data log?? I think it is my CAI, something tells me the JLT one isnt worth ****, but I could be wrong..
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Old 09-10-2013, 11:06 AM   #9
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yeah, def run a log and figure out what your commanded and actual AFR is, plus your timing advance and MAF g/s, at the very least.

However, I still think your problem is up front on the track. The 60s got slightly worse but the mph is significantly higher. Hence, you're making power, just not putting it down. 1.9-anything is downright awful for a drag tire equipped car. Drag radials, in my experience, need a lot of heat to stick.

I'm guessing stock converter? Should still be better 60 than that, given the 4.10s.
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Old 09-10-2013, 12:29 PM   #10
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Are you spraying right off the line?
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Old 09-10-2013, 12:32 PM   #11
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I was thinking on maybe running 17 psi tonight, and doing a good burnout
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Old 09-10-2013, 12:38 PM   #12
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I have a msd window switch set for 3000 rpm./
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Old 09-10-2013, 05:46 PM   #13
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11.81 @ 119 mph with a so so 1.9 60'. Stock 3.15's. 4.10s were not the best choice as was the Bama tune. Your car for one thing is shifting into 4th thus slowing you down before you cross the traps.
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Old 09-10-2013, 05:52 PM   #14
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11.81 @ 119 mph with a so so 1.9 60'. Stock 3.15's. 4.10s were not the best choice as was the Bama tune. Your car for one thing is shifting into 4th thus slowing you down before you cross the traps.
Wait, hitting 4th with 4.10's in a 1/4 is slowing him down?

With 3.31's (MT) I'm at the top of 3rd at the end of the 1/8!
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Old 09-10-2013, 06:29 PM   #15
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Quote:
Originally Posted by Grabber Blue5.0
11.81 @ 119 mph with a so so 1.9 60'. Stock 3.15's. 4.10s were not the best choice as was the Bama tune. Your car for one thing is shifting into 4th thus slowing you down before you cross the traps.
I agree. Less gear is needed or a taller tire.
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Old 09-10-2013, 06:30 PM   #16
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Wait, hitting 4th with 4.10's in a 1/4 is slowing him down?
Yep. That shift into 4th right before the traps is a killer. Instead of crossing at 7300 rpm he's crossing at 6300 rpm. Give or take depending on tire size.
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Old 09-10-2013, 07:11 PM   #17
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Originally Posted by Grabber Blue5.0 View Post
11.81 @ 119 mph with a so so 1.9 60'. Stock 3.15's. 4.10s were not the best choice as was the Bama tune. Your car for one thing is shifting into 4th thus slowing you down before you cross the traps.
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Yep. That shift into 4th right before the traps is a killer. Instead of crossing at 7300 rpm he's crossing at 6300 rpm. Give or take depending on tire size.
Wow! I would of thought he would be close to hitting 5th with that low of a gear ratio! I guess the auto's are geared way different!
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Old 09-10-2013, 08:02 PM   #18
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I shift into 5th right as I'm crossing the line, went out tonight and made one run before rain and 1.9 sixty, then when the car shifted into 3rd it seemed like it redlined and took time to shift, then I crossed the line at 12.3 at 116
So the third gear hesitation was for sure 2 tenths
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Old 09-10-2013, 08:05 PM   #19
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I shift into 5th right as I'm crossing the line, went out tonight and made one run before rain and 1.9 sixty, then when the car shifted into 3rd it seemed like it redlined and took time to shift, then I crossed the line at 12.3 at 116
So the third gear hesitation was for sure 2 tenths
Are you spraying off the line?
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Old 09-10-2013, 08:10 PM   #20
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Nope tonight it was all motor.
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Old 09-10-2013, 08:12 PM   #21
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Nope tonight it was all motor.
So all motor you ran 12.3, and with gas you ran 12.2 (got that number from 1st post)?

How bad are you spinning when you spray?
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Old 09-10-2013, 09:11 PM   #22
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When the car shifted into 3rd it seemed like it redlined and took time to shift, then I crossed the line at 12.3 at 116, So the third gear hesitation was for sure 2 tenths
It sounds like maybe the "canned Bama tune" is not fitting your setup as well as a Custome Dyno Tune could.
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Old 09-11-2013, 07:10 AM   #23
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I will contact bama today about a data log.
I do want to thank everyone that responded to this thread.
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Old 09-22-2013, 06:57 PM   #24
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Still not working'!! Now when I am shifting into 5th at the end of the track it just won't shift, it bounces off the rev limiter, This happens for a good half a second!! This only happens with my nitrous tune, my race tune it does it from 2-3 shift , the car falls on it's face!! I am so frustrated with this tuner! Keep adding parts to the car, and most parts are bought from AM, but can't take advantage of them because the tunes are killing! Grrrrrrr
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Old 09-22-2013, 07:33 PM   #25
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Your Tranny tune sounds like a lot of your problem. Not sure who you are talking to at AM but I would Start over on the Race tune and with emphasis on the TCM tune. Hope you get it fixed. I don't think putting a lot of heat in DR's is the problem. They will build to much pressure quick. A good little cleaning usually works. You are not spinning a lot from sounds of it. As for CAI the stock box with the coyote's is a true CAI, I had JLT and sold it. Dyno results can be argued on and on but track results have yet to prove a gain I know of. At what point you are spraying is important but with those shots and the tune for NOS you should be breaking 11's in that Auto for sure. JMO

Without a custom dyno tune for NOS I would be afraid to spray without. If you are comfortable spraying without custom tuned for NOS I would for sure be doing Datalogging everytime and holding my breath. Little risk as you know but do hope you get it straight and let us know.
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