Last thursday i had a gt3076r installed with all the mods in my sig...... put it on the dyno and everything was going great when the tuner tryed to turn up the boost and the number goes down Tuner thaught it was a restriction in airflow to the intake manifold we were all scratching our heads on this one any suggestions on the problem?

 

Bump

 

no idea. possible vacuum leak but if the car idles and holds boost than that is out of the question. is the turbo new?

 

yeah the turbo is brand spanking new they think my ams intercooler is defective and this thursday were gonna put it on the dyno with a ets intercooler ... but i wanna know evom's opinions .........car holds boost and idles well only making 334 on pump couldnt turn the boost up just made the power go down

 

Dude, you are going to need to supply way more details than look at my sig and tell me why my car isn't making power.

A short list of info need:

- Manifold and turbo kit.
- What power did your car make before, what has changed since then.
- What dyno, who's dyno, what power does a bone stock evo make on said dyno.
- How much power did you make
- How much boost
- What fuel
- What engine management

That's the short list.

 

tubular manifold its a road race engineering gt3076 turbo kit info on turbo kit http://www.socalevo.net/index.php?op...&topic=25695.0
stock 8 turbo with bolt ons mande 291 on 91
its a dynapak. roadrace engineering dyno... they usually make around 230-240 stock 8
i made 334 on 91 at 20 lbs
91 oct
stock ecu

 

I highly doubt the AMS intercooler is bad. I have one myself along with a couple of friends. You have a good size turbo for the regular intercooler, maybe not the race one. I don't think you with have high pressure drop. I'm a hands on person, I can't trouble shoot unless the car is in front of me.

 

i dont think its my intercooler either if they cant fix it then they need to supply or at least take apart and look for the problem on my turbo

 

There's only really 2 reasons your power would go down when you increased your boost....

1) overly retarded timing
2)really rich or really lean.

What afr and timing are you running?
Have you checked the timing on your cams?

 

thats a possibility i dont have answers for those 2 questions ill ask when i go again on thursday 2 chek out the problem

 

Have them perform a compression and leakdown test. Spark plugs??

 

it's hard for us to make any judgment until you post some graph, of the dyno before and after turning up the boost.

 

Could be a lot of things...

Might just not have enough spark.

 

so possibilitys are
do a compression and leakdown test
new spark plugz
retarded timing
running rich or lean? any others u guys got? when i go this thursday i want to run these possibilitys by them!

 

I believe AMS pressure test every single one of their IC before they leave. I highly doubt that is the problem.