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400hp only producing 300hp? Robbed/choked? Help

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Old Aug 6, 2010 | 05:44 AM
  #46  
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From: DFW
Originally Posted by BoostFTW05
no not at all, I put down 400/400 on 93 with my stock 8 turbo (i have dyno sheets) so with a 30r, quality kit or not, he should not be robbed of this much power.

AC
I call BS on this, no way you were at 400/400 on the stock 9.8 running 93 octane.
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Old Aug 6, 2010 | 07:29 AM
  #47  
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Originally Posted by TxEvo8
I call BS on this, no way you were at 400/400 on the stock 9.8 running 93 octane.
I would have to agree with this, I was barely over 400 on my hta green with full bolt ons and an aggressive tune on 93. If this is true then I am pretty sure it is a pump gas evo 8 turbo record (or damn close to it).
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Old Aug 6, 2010 | 07:51 AM
  #48  
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From: Reno
Maybe at the crank??
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Old Aug 6, 2010 | 09:58 AM
  #49  
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From: Springfield MO
Originally Posted by buchnerj
I would have to agree with this, I was barely over 400 on my hta green with full bolt ons and an aggressive tune on 93. If this is true then I am pretty sure it is a pump gas evo 8 turbo record (or damn close to it).
when i bought my car he had sheets showing it made 421/431 on stock turbo but it had meth water injection and other very extreme parts, i did take the meth off tho so i dont destroy my engine. i dont know if that was crank or wheels tho
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Old Aug 6, 2010 | 10:14 AM
  #50  
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i vote that meth injection throws stock turbo/pump gas dyno out the window

His number do sound low though.....I made more HP on a IX turbo on 93....

Last edited by xsolowx; Aug 6, 2010 at 10:21 AM.
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Old Aug 6, 2010 | 11:12 AM
  #51  
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Are you still running a Maf sensor? That could be choking the air coming in as well. His injectors should be enough on pump gas. Also just because they are brand name parts doesnt mean that they will work well together.
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Old Aug 6, 2010 | 11:54 AM
  #52  
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From: DFW, TX
post up a log of your runs. that will help us diagnose your car.
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Old Aug 6, 2010 | 12:27 PM
  #53  
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From: the burgh, pa
Originally Posted by EVO8STI
when i bought my car he had sheets showing it made 421/431 on stock turbo but it had meth water injection and other very extreme parts, i did take the meth off tho so i dont destroy my engine. i dont know if that was crank or wheels tho
If this was still the stock 8 tubro and 9.8 hotside and everything, then those numbers still sound high. I don't care wether it had meth or not, the 8 turbo can only flow so much air through it, that and when you would get into the high RPMs (where you would make the power you are talking about) that thing would be a hot air dryer, basically destroying all decent power.

Maybe its high reading dyno syndrome or something... not sure. I would be anxious to see a video and/or chart of that car.
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Old Aug 6, 2010 | 12:47 PM
  #54  
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Just out of curiousity, have you taken the car to a good evolution shop to get inspected? No offense and all these ideas are great but if you car has passed all the "tests" and your still no where, thats probably the next safest bet.

The best thing to do right now is to start making your car stock again..... And then start adding each part on again and dyno'ing the #'s.

Telling him to turn up the boost on a 30R is kinda pointless. an extra 3 to 4 lbs of boost isn't going to wake the car up 60-100 whp. The cams are not a limiting factor either, on my evo 8, I ran the hks 272 cams and they were good enough for me to put down 500 whp and 475 lbs of torque.

The clutch is a good thought as well... it will certainly show funky #'s if its slipping.

Putting the car on an actual dyno will help show some things as well, plus you can actually where your car is at.
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Old Aug 6, 2010 | 01:15 PM
  #55  
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If you do not have major intake leaks then we can assume your engine is getting the vast majority of the flow. Also, if your pressure is spot on we can assume your exhaust is not leaking out before the turbine. If your compression tests look good, I do not think you have an internals issue - it would be unlikely.

I'm going to stand behind the people who suggested clutch.
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Old Aug 6, 2010 | 01:24 PM
  #56  
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From: Pittsburgh, PA
Originally Posted by buchnerj
If this was still the stock 8 tubro and 9.8 hotside and everything, then those numbers still sound high. I don't care wether it had meth or not, the 8 turbo can only flow so much air through it, that and when you would get into the high RPMs (where you would make the power you are talking about) that thing would be a hot air dryer, basically destroying all decent power.

Maybe its high reading dyno syndrome or something... not sure. I would be anxious to see a video and/or chart of that car.
As a reference my car made 296 whp with bolt ons and hks 272s on mustang dyno with 03 VIII turbo on 93
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Old Aug 6, 2010 | 01:30 PM
  #57  
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And what dyno was this car run on. That makes a huge difference. On certain dynos 400whp on pump gas can be had, but lower reading dynos would be around 320. So make sure you know what dyno you were on before you start thinking you lost 100 whp as you may only be down 10-20. It sounds like you are pretty new to all of this.
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Old Aug 7, 2010 | 12:27 AM
  #58  
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From: spanaway washington
tune i know you say it was good on afrs but what about the timing? is the timing at a good number and also is it holding full boost threw redline?
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Old Aug 7, 2010 | 09:46 AM
  #59  
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From: Thomasville NC



ok.... I ran a kill mode tune on speed density and it was cooler night air. the first is just with an intake an MBC set to around 20 psi the other is every possible bolt on option plus HKS 272s and arps running a 30lb spike.

no smoothing and uncorrected

Thanks,
AC

Last edited by BoostFTW05; Aug 7, 2010 at 09:54 AM.
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Old Aug 7, 2010 | 09:53 AM
  #60  
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Say what you want fellas at the end of the day I know what I have. I would love to know if thats a stock 8 turbo record that would be great but the stock turbo is coming off just as soon as I graduate from the academy.

Side note, Running a less agressive tune it put down 383/412 uncorrected I have that sheet too if you would like to see it. All where done on VDR and on dynojet.

Edit:what the heck ill throw it in.


Last edited by BoostFTW05; Aug 7, 2010 at 09:57 AM.
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