nvmysrtcheck your static fuel pressure....check for leaks...i.e. intercooler piping, vaccums, anything vaccum related....makes sure you have good grounds.....make sure you timing is right....

nvmysrts1 or s2? how is it under load? have you checked your fuel pressure....check maf voltage?

HOMEMADE240SIt sounds like what my ka-t did to me. I never got around to figure it out. I put on a new IACV but it still did it. What are u tuning with? check your fuel map at idle, check for boost leak...are u running stock maf? what all do you have as upgrade?

have you tried any or this yet???