|
i would say get a s-afc and a aftermarket fuel pressure regulator, unless you have a aftermarket fpr then you are over running the stock one.
i am almost certain that is your problem. i put in 550's and didn't tune my afc for about a week and the car was running sluggish and horrible. i went out and done some simple runs to log it and with a pretty fast tuneing it felt like a new car.
|