Hey guys,

I'm new to the forum, so don't hate on the newbie for making a dumb post like this. I've got a 300zx TT and I took it in to the shop to have a camshaft position sensor replaced since it was stalling out in the corners when I was braking, but when I drove it off the lot when I hit about 4000 or 5000 once the boost started kicking in, it wouldn't really go that much higher it would be a kind of clunky sound revving up and down in that area. It will run from 0-4000 just fine, and in neutral rev up normally. It's got a stillen ecu, and it's running really rich. Any ideas of what it could be? Any other info you need me to post up?

Basically though its just limiting itself vaguely around 4000-6000 depending on the gear and slowly going up or down when gassing it.