Hesitation at WOT

[fishtank]

Well heres my problem. When doing a pull in any gear my car hesitates around 5200 rpm. I have no problem building boost or holding it either. But as soon as it gets close to 5200 the car gives a slight buck, but will continue reving up after.

I have just replaced the plugs with new ngk bpr6es have new accel 300k thundersports wires and have also just changed the fuel filter.
car is stock running 11psi of boost
plugs are gapped to .028
temp outside is about -20 celsius
Is there anything else i should be looking at as a cause for this

 

[oldman]

Just because you can build and hold boost doesn't mean there's no leak, Do a leak test first so you can eliminate it for sure.

 

[swarm]

maybe this will help?
http://www.dsmtuners.com/forums/showthread.php?t=167660&goto=newpost

 

[fishtank]

Fixed my problem had 1 tiny little boost leak at the injectors... but it ended up being leaking capicitors on the ecu. Which in turn kept reseting the board and shutting off the fuel pump, swapped in a new ECU and everything works awesome. Thanks for the help anyways

 

[quiXilver]

Fixed my problem had 1 tiny little boost leak at the injectors... but it ended up being leaking capicitors on the ecu. Which in turn kept reseting the board and shutting off the fuel pump, swapped in a new ECU and everything works awesome. Thanks for the help anyways

Did it just hesitate? Or did it sputter all the time after 5200 rpms. 'cause that's what mine's doin right now.

 

[fishtank]

It would do both, i would still do the leak test first and make sure but check the ecu if your still up in the air and have looked after all the other basic stuff.