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Forced Induction Turbochargers and Superchargers..Got Boost?

My first DYNOJET @ AAM, help me understand this

Old Apr 16, 2007 | 08:30 AM
  #21  
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Originally Posted by widebody350
somewhat off topic but don't the PE kits have smaller Turbos than the Greddy or APS?
much smaller
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Old Apr 16, 2007 | 08:43 AM
  #22  
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Bro, you have an insanely good torque/hp curve on your car . . . . I wouldln't worry about "not enough power" . . . . 500whp is insane . . . . with insane power under the curve to go along . . . .
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Old Apr 16, 2007 | 09:22 AM
  #23  
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Looks like the AF is pretty sporadic. Also your torque curve is pretty choppy. That may clean up with better AFR's. You're bumping along the 10's there at some points. I would expect the car is not making clean pulls through to redline due to missfires.
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Old Apr 16, 2007 | 09:39 AM
  #24  
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What compression pistons?
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Old Apr 16, 2007 | 10:17 AM
  #25  
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much smaller... its similar to the JWT TT turbo's

8.5.1 compression

Last edited by gcoupeturbo; Apr 16, 2007 at 11:00 AM.
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Old Apr 16, 2007 | 12:50 PM
  #26  
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What gear were you doing your pulls in?

Didn't AAM use to do all their dyno runs in 3rd gear?
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Old Apr 16, 2007 | 01:22 PM
  #27  
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Originally Posted by dutchboy350Z
What gear were you doing your pulls in?

Didn't AAM use to do all their dyno runs in 3rd gear?
mike told me these were in 5th
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Old Apr 16, 2007 | 02:03 PM
  #28  
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Originally Posted by Alberto
Wrong. They have a Dynojet, the numbers can be uncorrected (actual), SAE, STD or a few other less known DJ corrections. Id think with the temp at 61 when the pull was done the #'s would be close to SAE or STD, applying either one of those corrections could add or subtract a few hp.
Yes, if you want to be technical, their dynojet can do the whole range of corrections a dynojet can do.. But every dyno I've seen from AAM has been uncorrected. Pffft... weaksauce!
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Old Apr 16, 2007 | 09:25 PM
  #29  
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Originally Posted by gcoupeturbo
much smaller... its similar to the JWT TT turbo's

8.5.1 compression

Dude I think your compression is to low for this kit. Did you pick the build? 8.8 or 9to1 would be best. Whats the size of the pistons did you get the larger 98mm or stay with the 96? What injectors are you running?
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Old Apr 16, 2007 | 09:55 PM
  #30  
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I did get low numbers on AAM's dynojet also.
I made about 360whp with the TN kit at a little bit less than 8 psi with a utec tune.
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Old Apr 16, 2007 | 10:00 PM
  #31  
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Originally Posted by priscilla ls1
Dude I think your compression is to low for this kit. Did you pick the build? 8.8 or 9to1 would be best. Whats the size of the pistons did you get the larger 98mm or stay with the 96? What injectors are you running?
actually i bought the motor used and this was the compression already on it
as far as injectors im using 750's

hmm.. im wondering if i should get this retuned to get the graph curves more smoother.. i also don't understand how safe my air-fuel ratio is right now
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Old Apr 17, 2007 | 08:25 AM
  #32  
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Whats your pistons size? All built engines are going to differ from one to another. Your HP might seem about right or just a tad lower then what you should have, but your compression is going to hurt you tell you can up the boost some more. Remember dont compare other PETT kit numbers to yours they will all be different eagles is at a stock compression and stock piston size(bore) and can make more power at lower boost then mine at a lower compression and bigger bore. But in turn I have more room in there to push more air which can give me more power in higher boost. But the PETT kit is not a really high boost kit I have heard of 20lb"s max on this kit so you dont want to go to low on your compression it really will hurt your numbers so you have to pick your engine to match your kit. Your engine might have come from someone using a greddy or APS. These kits can really take advantage off all that room in your cylinder. To see some better numbers you are going to have to up the boost some to match the size of the engine.
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Old Apr 17, 2007 | 07:15 PM
  #33  
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True.. thanks, i hope that this tune will last me a while, i'm probably will keep it at 15psi on a daily basis..the motor and turbo kit were bought together

Below are phone camera pics, and also the previous owner of the motor and kit.. his dyno on his car is also posted below along with the link




Here is a picture of the engine in the previous owner's car



http://www.xs-engineering.com/teamxs.asp?filter=3&id=33

This is what he made on his automatic


Of course he didnt give me the power enterprise intercooler..
and im only at pump gas... i bought the motor from vq35carel

Last edited by gcoupeturbo; Apr 17, 2007 at 07:20 PM.
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Old Apr 18, 2007 | 06:36 AM
  #34  
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He dyno'd higher with an auto? At what boost and what gas?
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Old Apr 18, 2007 | 09:01 AM
  #35  
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Well there you go right there he obviosly has a differant kit then you because of the lag and you having higher TQ numbers. PE is a high TQ kit he must of had the greddy. I dont think anything is wrong with that engine or the kit. Must be the tune.
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Old Apr 18, 2007 | 09:19 AM
  #36  
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so he kept the intercooler. What kit does he have now?
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Old Apr 18, 2007 | 11:25 AM
  #37  
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the turbo kit and motor was sold to me together. i don't have the fuel and psi info from him.. but the PE kit was attached to the motor when he sold it to me

he did sell the intercooler before he sold the rest to me
i just bought the motor and turbokit minus the intercooler for about 10k
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Old Apr 19, 2007 | 04:00 AM
  #38  
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Originally Posted by Alberto
Wrong. They have a Dynojet, the numbers can be uncorrected (actual), SAE, STD or a few other less known DJ corrections. Id think with the temp at 61 when the pull was done the #'s would be close to SAE or STD, applying either one of those corrections could add or subtract a few hp.
STD is often very close to uncorrected numbers except in extreme weather conditions. SAE (what I prefer to use in reporting numbers) is almost always significantly lower. On a 500HP vehicle in average weather, 20hp difference is common.

Then you can add/subtract 1-3HP with smoothing.

In the end, a dyno is a tool and not a sack enlarger..

-Mark
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Old Apr 19, 2007 | 08:49 AM
  #39  
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On my car with the TN and Greddy kit there was less than 10whp difference between SAE and STD. And trust me, Im not one of these guys who think big dyno numbers = a fast car.
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Old Apr 19, 2007 | 11:58 AM
  #40  
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It better be the low boost setting!

Originally Posted by gcoupeturbo
actually, let me verify this with aam tomorrow, my car was tuned at a low boost (13psi) and a high boost (15psi) setting. .. im not sure if this dyno is the low boost or high boost


(stupid me, i got too exited test driving my car)
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