I've had my car for about 6 months now. It came with a small ported 16g, fpr, rewired fuel pump, and stock injectors. The car blows a little black smoke between shifts under heavy acceleration. I think its fuel related because the car doesnt lose/burn much oil. Would a fuel pump/ 550's/ SAFC be very beneficial for me? is the afc difficult to work with? What method of tuning is the best? The car pulls hard now and is quite reliable. I dont want to spend a bunch of money and time if the gains are going to be minimal.
thanks, Andy