Recently had the car on the dyno and its just not making the power it should. It makes great power all the way up to 7000rpm and after that the the curve goes down and the torque also drops a lot until 8500. Even stock setups hold power to redline, 7k is where the max power is reached and im losing 30-40whp by redline.(8500)

The setup:
-9:1 gsr
-Stock port b16 head, supertech valvetrain
-Skunk2 tuner 2 cams
-Top mount t4
-Billet HTA3586 turbo
-3in exhaust
-precision 600 core
-victor x intake manifold
-precision 1000s
-M&W pro 10
-Crane coil

Things ive tested:
-Compression is 185 on all 4 cylinders
-Boost leak tested entire intercooler system
-Jumped vtec to make sure its engaging
-Checked bov for leak
-Checked timing its fine
-Cams have no wear, rockers in good shape
-removed and checked intake manifold/ intake ports
-Swaped from my s300 and pluged in neptune to see if that changed anything
-Going to remove exhaust tomorrow to see if theres a restriction

Any suggestions are appreciated becuase i am pulling my hair out trying to figure this out

 

dstributor?

 

no if you looked at my mods I have an M&W pro 10 and crane external coil

 

Post a dyno sheet and a few photos of the engine bay.

 

Maybe you're running out of fuel?

 

show us datalogs with boost....sounds like you may be loosing boost in the upper rpm....

 

I could prolly get a dyno graph, it's deff not running out of fuel because we stoped tuning at 11psi and it still was extremely rich up top. The boost is holding solid throughout the rpm range to redline

 

What power are you making? No offense, but your original post is worthless. It's nice to see your setup, but without a dyno graph it's hard to diagnose. Shots of the engine bay are helpful as well.

 

360whp @ 10psi, but its making that power at 7k then droping off to 330ish by redline

 

POST A DYNO SHEET.

 

my car does this too...you probably have a bottle neck in your exhaust

 

I wish that was the problem but it's a straight though 3in exhaust with a thermal muffler

 

bump leakdown was 3%-5% in all cylinders

 

have u checked the exhaust or are you just assuming? if you have a flex joint check it to make sure it hasn't collapsed. it sounds like you have an exhaust restriction. how rapidly does the power drop? is it gradual from 7k-8.5k, or is it sudden?

 

Its a brand new flex pipe, Also the power slowly drops off when is should just keep climbing to redline

 

dude listen to what people are telling you.

post pictures of your dyno, and of you engine bay.

no one can help you otherwise

 

Cars going back on the dyno next week

 

BUMP