rb25det with PFC cuts after 6 psi PLEASE HELP!!!

[titangts]

First off im new to the form and i thank ANYONE for their help.

the car has been driving fine...it was breaking up under boost some for the fact i needed new ngk bkr7e plugs...

but i did a little slide in a parking lot and after that the car WILL NOT go past 6 psi.. boost was set to around 15.

no matter how much throttle % i give it ANYTHING past 6 psi will stall. and i mean the motor completely CUTs as in NO power ( sounds like it just turned off)

mods are

Rb25det S1apexi PFCj60 maffbkr7e plugs ( not gapped, just opened the box and put them in )holset top mount turbo. apexi avc-r ebc255 fuelpumpadjustable FPRjecs 550cc injectors. stock coilpacks

PLEASE PLEASE HELP. i have a BIG pro am drift event in 3 weeks and there is not way i can slide the car like this...

funny thing is it drives PERFECT..even boost GREAT 6PSI or lower. just right when it touches 7 STALLLLLLLLLLLL.

thank you guys!

Edit:::: do you think the maf could be doing this...do i just unplug it floor the gas (with the key turn on) and look at the voltage???

or could it be a boost leak...maybe i blew something ( like something in the cooler pipes) and the air releases and but the ecu still throwing the fuel needed but it doesnt get burned so it fouls the plugs out and causes it to stall??????? those are my only thoughts about what could be wrong. what do you guys think
Modified by titangts at 6:29 PM 2/24/2010

[Darius]

or could it be a boost leak...maybe i blew something ( like something in the cooler pipes) and the air releases and but the ecu still throwing the fuel needed but it doesnt get burned so it fouls the plugs out and causes it to stall???????

By the way you describe it happening after doing a slide makes me think it is a boost leak at a coupler that only lets loose above 6 psi. Try checking all of the clamps and if that doesn't work, make a boost tester (search the RB forum for details) and check for leaks elsewhere.

Can you free-rev the engine above 3500 rpm in neutral or does the PFC limit it below redline?

[FAST-DATSUN]

Need more info fuel pressure, what spark plug gap, RPM of miss starting, all gears th same?? vac at idle??? stock turbo?? ""Air/fuel ????"" what was dyno tune like (did it miss on the dyno???)