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Old 05-16-2004, 05:00 PM   #1
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New dynotune - 265rwhp 280rwtq

Got my new SCT dyno tune today. I went mainly to fix the idle issues, popping through the intake, and surging. all have been fixed... well, it popped once on the way home. Jerry said he couldn't figure out what would cause it to pop like that. Either way, the car idles like a dream now!!!! no surging either. it's a whole new car!

With the tune we kept the a/f ratio pretty much the same (I believe there were some changes), but he added timing and did some other stuff. anyway, I'm officially happy with the HP/TQ my car produces. And with that HP I believe I'm #1 for NA hp. the previous was 259rwhp.

still some issues with the vac that the car is pulling. you can see I'm still pulling 1.6mm/hg at the upper rpm range. Jerry told me at the last tune that a TB might help. So I did a TB and Mik sent me a custom upper with the posts removed and a hogged out inlet. figured that would fix my vac problem. nope. still there. Jerry said it might be the MAF, but he wasn't sure. He said it seemed odd that it's still sucking that hard. And since he's reading the vac from the crossover area, it's gotta be someplace from the crossover vac line to the air filter. The upper is good, Mik hogged the **** out of the inlet. He suggested a bigger MAF and a custom MAF forward tube. He speculated it would only be worth another 5hp or so. IMO not worth the time or the money. but another 5rwhp would put me up at 270rwhp... which is just a cool milestone. maybe if I found a cheap way I would do it. he also suggested using a windstar upper and a Kenne Bell IAC. said with alittle work it would fit and I'd make more HP and TQ. For now I'm just gonna drive it. might try the windstar upper at a later time. who knows.

here's the graph:


here's the data:


here's a movie of the car on the dyno:
http://www.3.8mustang.com/~justang/D...2/MOV00473.MPG
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265rwhp 280rwtq
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Old 05-16-2004, 05:42 PM   #2
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sweet man nice numbers!!! youll need to update your sig now hows it feel to almost have more hp than ericks blown car on your n/a engine??
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Old 05-16-2004, 05:53 PM   #3
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changed it.

yeah, I need to rub it in. I text messaged him at the dyno, but he didn't respond! lol.
I'm within 5hp of him. and the same tq.
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Old 05-16-2004, 06:52 PM   #4
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thats awesome... who was it that ran that twin turbo setup and did an 11.9 on the stock motor?
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Old 05-16-2004, 06:54 PM   #5
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Old 05-16-2004, 07:05 PM   #6
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Who would win? Justin or Eval?
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Old 05-16-2004, 07:11 PM   #7
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justin, his cars lighter
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Old 05-16-2004, 10:33 PM   #8
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and my tq starts off lower than his.
and everybody knows messicans can't drive. :p

damn, where is Erick today?
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Old 05-16-2004, 10:40 PM   #9
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and everybody knows messicans can't drive. :p
Damn the power difference! That right there more than makes up for it!

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Old 05-17-2004, 01:13 AM   #10
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Nice numbers :drive:
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Old 05-17-2004, 10:37 AM   #11
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Very nice numbers for an NA sixxer. You must have some money in that engine. Congrats!
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Old 05-17-2004, 11:44 AM   #12
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Whew, good thing I am not in CA, I would have to watch out for Justang! Looking good my man! I haven't been dynoed in over a year, so don't know what I am putting out, but you may have me beat there.
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Old 05-17-2004, 02:20 PM   #13
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He's got my stock V-8 beat. My Cobra put down 240 RWHP and 290 RWTQ. I still got him on torque though I don't know if his car is heavier than a fox, if not we would have a prety good race.
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Old 05-17-2004, 05:57 PM   #14
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what mods do you have on that v6
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Old 05-17-2004, 06:04 PM   #15
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Quote:
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what mods do you have on that v6
http://www.3.8mustang.com/cgi-bin/pr...=view&num=1270
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Old 05-17-2004, 06:18 PM   #16
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how much cash have you spent cause DAMN those are alot of mods
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Old 05-17-2004, 06:37 PM   #17
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its not that many engine mods really.

a 4.2 with BV heads and a tiny cam, logntubes, boltons...
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Old 05-17-2004, 07:11 PM   #18
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into the engine... I have like 4k with the tune and everything. I found most of my parts used. this is the budget machine! lol. but it performs. the complete 4.2L engine was only $300.

I don't know how my car compares to a fox body. never had it weighed. stock its supposed to be 3050lbs or very close to that. I've really only added a few things that would weigh me down. oh I love 93 Cobra's!!!
I may go get it weighed. it's only like $6 down the street.

When I started this project I wanted a *****en street car. lots of torque with a really nice idle. all in all, I've reached the goal I wanted. I've got a car that has a damn good idle and it a really fun street car. it's got tq really low in the rpm range which you can't get from a s/c (unless it's a roots), and pulls really hard in the upper rpm range. oh and it gets 28mpg on the road!!!

next up... I'm gonna buy a graduate from college, buy a Tacoma and look for 300rwhp all motor with a new cam.
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Old 05-18-2004, 12:15 AM   #19
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here's a comparison of the both dyno tunes. 233/250 vs 265/280

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Old 05-18-2004, 12:24 AM   #20
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and here's a comparison of my car with just bolt ons and the new dyno. I picked up 90rwhp and 90rwtq with all I did.
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Old 05-18-2004, 12:24 AM   #21
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damn dude, thats a huge improvements between those graphs!!! congrats!! i wish youd hang around this site more often, its fun talkin to ppl that know **** about cars
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Old 05-18-2004, 12:46 AM   #22
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its fun talkin to ppl that know **** about cars
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Old 05-18-2004, 12:53 AM   #23
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u know what i mean
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Old 05-18-2004, 01:06 AM   #24
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yes i know.. :leghump1:
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Old 05-18-2004, 06:02 AM   #25
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Well Justin congrats on the Great numbers. Very cool
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Old 05-18-2004, 10:42 AM   #26
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damn dude, thats a huge improvements between those graphs!!! congrats!! i wish youd hang around this site more often, its fun talkin to ppl that know **** about cars
hahahahaha

to that comment
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Old 05-19-2004, 12:33 PM   #27
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Very cool. Congrats!
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Old 05-19-2004, 12:41 PM   #28
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Why would you want to chang eto the windstar intake? How does it differ from the intake in our car?

Also, NICE gains man!
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Old 05-19-2004, 12:55 PM   #29
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The Windstar intake is taller and typically will not fit in the stang without taller hood. It also has better flow.
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Old 05-21-2004, 12:23 PM   #30
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thanks guys.


yeah the windstar has longer runners, which will give me more tq...... and from what I've been reading it's better for cars with a longer stroke. because as it is now I can clear the air in the runners, the plentum, and then start to suck in air from the cross over/tb for each stroke. and the crossovers suck on our cars. I've been wondering lately if that's why I'm pulling such high vac numbers.

Jerry told me that if I used an external IAC, like the ones that KenneBell uses, it would fit. And I'm really down for more tq. I'd like to get this car over 300rwtq. that would be cool! oh and 300rwhp. :p

the car is so fun to drive. it's got torque out the yingyang! AND it's getting better milage intown. I think currently I'm getting like 23mpg in town! that's the best I've ever seen intown. makes me wonder if I can get over 30mpg on the road!

Rick, would you happen to have an dynograph of your GT with the data readouts? I wanna compare my tq curve to a GT. I'm very curious!
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Old 05-21-2004, 01:04 PM   #31
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So it has longer runners than ours? Is that aslo split port?
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Old 05-21-2004, 01:40 PM   #32
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Justang is a great guy. Most people on 3.8 know that a large percentage of the people that were there who knew a lot about cars are now over here, and we visit them there now and then for a good laugh.
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Old 05-21-2004, 08:29 PM   #33
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yes it does and it is different than the Mustang split port. It has the T/B front and center. OH and Justang is a terrific guy, Like Rick said.
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Old 05-21-2004, 09:03 PM   #34
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here's my car vs a 5speed GT with a magnaflow exhaust, including x-pipe and cats, a K&N FIPK, UDP, and Superchip. kinda neat to see the power curve differences.

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Old 05-21-2004, 09:06 PM   #35
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yeah, the design of the mustang upper is horrible for NA applications. I think its bad design is masked when you have a supercharger.

I'm thinking about doing it because I read that with my added stroke I'm clearing the air in my runners, then my plentums, then start to clear the air in the TB area. which could be adding to my increased vac numbers on my dynos.

the longer runners should also give me more tq. I would really like to see 300rwtq out of this cam setup! that would be awesome!
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