alright driving the Z around now...a bad cam sensor and incorrect wiring on the #2 cylinder injector were giving me huge problems....now i feel the HKS VPC and GCC set up i am running is way to inadequate for my 1000cc injectors.... at Idol the car puts out enough black smoke to fill the street. i have set both the VPC and GCC to max LEAN and it doesnt seem to help. am i doing something wrong or do i REALLY need to buy a 2,000 dollar computor??????