rb25 cutting out at mid rmp

[twisted99s10]

just got my rb25 all installed in the car. seems to run very strong. having a problem in the mid range. it runs at about 7lbs of boost until about 5500 rpm. then it increases to 10 psi. as soon as me needle hits 10psi the car cuts out and bucks until the boost goes back down. even does this with the stock boost controller out of the way, with the vacuume line run directly from the intake manifold to the wastegate.

i have a walbro 255 fuel pump, put in a turbo 300zx fuel filter, have a front mount intercooler, and 3 inch exhaust. the motor itself should be bone stock. i need your help guys.

thanks.

[Joe]

whats your timing set at?

[twisted99s10]

we set it at 15* off of top dead center. did the start up let it run, unplug the tps, then set it. i'll re check it tho.

[Thanielson]

i used to get cut out prob's in about the same rpm range at stock 8psi and higher it ended up being a bad coil pack.

[twisted99s10]

ok. thanks. i have another friend with one. i'll see if he will let me swap some of his coil packs on mine and give it a test run.

[Romeo_rus]

so... have u solved ur problem?

[robbie2883]

does it basically fall on it's face? if so check the maf voltage and make sure you aren't maxing the maf out