I was told that EvoM could help solve this problem.

Current Power Mods: Injen intake, Injen upper & lower I/C piping, Evo 9 BOV, ETS 3" FMIC, ported exhaust manifold, ported 3076r turbo, 3" downpipe, 3"testpipe, 3" HKS hi-power Catback, HKS 272's, Vishnu Camgears, Walbro 255, Denso 720cc, Okada coil packs, AEM Boost Controller @ 27 psi..

Location: Utah (higher elevation) 1/4mi. 14.1 @99

A virtual dyno on the car showed a whole 320 whp, 272wtq...
Compression: (dry) #1) 140 #2) 140 #3) 145 #4) 123
(wet) #1)145 #2)145 #3)145 #4)135 (I meet the 10-15% allowance)

I should be around 400+whp.

What could this problem be that is choking my engine or robbing me of 100 hp/tq?

Thanks

 

wow stock evos are faster then that, i hear that the hi flow cat melt extremely easy maybe that's clogging your exhaust, put a test pipe on it and take her for a run. but who knows really

 

I'm currently running a 3" test pipe.... Still having the problem

 

Crappy tune FTL....

 

The above poster is right, its just something that you have to explore. Something sounds like it is choking either the induction into the turbo or the charged air after the turbine. Most likely suspect is the high flow cat (Edit: Saw your running a test pipe, still check the couplers and FMIC for potential blockages), but I have seen people with collapsed couplers, things sucked into the MAF, etc. You just have to rip things apart and look for anything suspicious.

If everything checks out then its time to start looking into the turbo and possible causes for why it isn't producing efficiently enough, i.e. broken fins on the blade, shaft play, etc. Lastly its time to look into the tune.

Your evo should run much better than a 14.1 though, a good amount of stockers with good driving can beat that time. Keep us posted.

 

I dont see a tune in his list.

Edit.. nevermind.

 

the tune is spot on... it actually helped... before we finalized the tune the car had 263whp and 202 wtq. tuned the car to make sure its in spec afr=11.5 across the board.

 

Holy hell. Something is really wrong if you were seeing 263/202 with all those mods. Are you sure the engine is healthy? Leakdown test? Boost leak test too?

 

there is no hi-flow cat on the car... U guys may be misreading the HKS hi-power catback exhaust for a hi-flow cat..

 

masive boost leak some where

 

boost leak tested about a month ago... everything is good

 

How is the ride? Sloppy, jerking, etc? How is the turbo spooling, a good bit of lag or is it spot on where it should be?

 

Ride seems to be good, the turbo has some lag, not much it hits peak boost @4800rpm

 

Im thinking the head may have lifted (no arp headstuds), a bad valve, headgasket?

 

hahah its crazy how that happens, my bad, i say you got a fed turbo then