Is it a headgasket??

[nab911]

Ok, for those that know of my weird no power under boost problem, i changed my oil and no water whatsoever in it. The car stumbles right after 1lb of boost but after extensive boost leak testing there are NO leaks other than the intercooler but thats before the maf so it doesnt matter. What the hell is wrong with it!!??

[F3600]

maybe your ignitor or a coil... mine is doing the same on hard throttle... (i get no boost) check your ecu for code before.. good luck it a ***** to diagnose .My car is not running for 2 weeks because of that .. its boring

[float_6969]

Are you running a blow through setup on the MAFS?

[boost_boy]

Just dump the factory crapola and get an ?>? Seriously Nick, I don't think it's your headgasket. I had the strangest problem like yours before. I changed the timing belt, spark plugs, coilpacks, ecu, injectors and still got no serious power under boost. It's a headached and I encourage you to sell the stock stuff and get you a nice standalone.

Dee

[WeldingHank]

have you checked your ECU for trouble codes?

[nab911]

All it throws is a det sensor which you all said wouldnt caus it. It could be tuning but im worried about the water coming out of the tail pipe but i do only start and drive it like once a week if that so it could be condensation because we have been through those hurricanes. Im going to get a compression tester and test it and if it comes back clean after that... dee how much is an SDS system

[nocwage]

Wait, it's detecting knocking/detonation?

When hat happens it SEVERELY retards timing to keep the motor from blowing, that would DEFINATELY fubar your power..Atleast it did on my NX2000 (non-turbo though)

Why not fix the problem you've got first and THEN see what else.

[nab911]

Lol well some of the guys on here and others i have talked to said they disconnected the sensor all together because it caused problems hooked up. Maybe ill actualy take a look at the little bugger and see if its plugged up and messed up and maybe it could be causing the problem. BUT i do have bigger injectors, a high flow fuel pump, and a turbo that bigger than my head so im assuming that my tuning is all but par.