popping at 4-5k

[Winona]

so i can try and race the car, when i hit around 4-5k its starts to cut and and make a popping sound and jerks its set at stock psi but it still rises to 9psi when this happens, i have the sr turbo but also have the sr maf and the maf reads 4.23-4.5 volts when this happens. i was reading a post from awhile ago and dee said that it could be a auto ecu. im not 100% sure on transmission cause i fried my old one and got a new one, but with the old ecu it did the same thing jsut at higher rpms and that was a maunaul for sure. i cant remember the number on the new one right off hand. i was wondering could it be a boost cut? seeing i do have my boost controller set to stock boost and its rising to 9psi could it trying to cut it back at the higher rpms, but also when i set the boost to 10psi i guess it does the same. my fuel isnt running lean either. any ideas?

[pulsar gtr]

It sounds like you are having a boost leak, inspect all your hoses, clamps and pipes to make sure there is no leaks, holes, or loose clamps.

RafiPULSAR GTR

[Winona]

ok ill check that out then and see what i get

[dattodude]

If you are getting ECU Errors it could be boost cut. SR20DETs are more likely to exhibit this problem.

Download the manual, and run through some of the ECU self-diagnosis steps.