you can get away with the ms4 with stock heads. Anything else requires fly cutting usually.
and richie drove around with the ms4 for 3 years without a tune. Im not saying thats what caused it but it sure as hell didnt help it.
you can get away with the ms4 with stock heads. Anything else requires fly cutting usually.
and richie drove around with the ms4 for 3 years without a tune. Im not saying thats what caused it but it sure as hell didnt help it.