yep I agree there is alot off helpful people and info on this site .befour I got it tuned I took it in four fault check it come up with 8 faults and they could not tell how to fix them or what they were just numbers would not rev over 3000 come home read some posts went out look around and found the knock senser wires were burnt. fixed that 6 faults gone .hate to think what that would off cost if I took to a shop here .