sr help please read

[Turb0wned]

ive been tryin to figure out what could be wrong with my car for a while not... when i hit full boost it starts to hold back and jerks u back and forth... at first i thought it was my turbo but after taking out the turbo looks fine and has barly any play in it at all, while taking out the turbo i realized that one of the gaskets were ****ed so i bought a new one and replaced it but still the same problem... so next i was thinking it could be my knock sensor being ****ed up so the computer could have been retarding the timing when i hit full boost because of the bad knock sensor but today i checked the ecu to see what code it was throwing out and it was code #55 which is no problems... i know my ecu is reading right because when i unpluged the knock sensor then it started to read code #34 (knock sensor) im also running really really rich, fouling my spark plugs left and right.. so now im thinking it has to have somthing to do with fuel or ignition... dont have a fuel pressor gauge so i cant see where its at... i have no leaks on any of my piping so thats not it for sure... does anyone have any kind of thoughts on what it could be? any ideas at all would help.. maybe my fpr?

[Hijacker]

the only way to check the FPR is to hook a fuel pressure gauge up and see what it reads (42psi is average for a working FPR).

How much boost are you running? And on what turbo? The problem you're describing almost sounds like you're topping the MAF out when you hit max boost and close in on peak power.

I would try to land an extra MAF to swap on and see if that's the problem. If it repeats, you might need to upgrade your MAF (in the case you have an upgraded turbo, but no upgraded fuel and air system)

[Turb0wned]

nope its a stock t25 boosting 10psi if i pull the wastegate it will only go up to 6psi but it hold boost so i really dont think its the turbo because whatever i boost it stays and holds the boost and the turbo has no play at all what do u think i should check

[Hijacker]

it could be a MAF on its way out. I"ve seen MAFs do some very weird things and not throw codes. I suggest trying to borrow someone's MAF and see if that cures your problem.