over board
Member
I own a 1996 253 convincer with a 454 mag efi mp with a pro-charger m-1sc running 5 lbs. of boost. I wanted to know if I should change the head gaskets and the exhaust valves? Some people tell me I already have iconnel exhuast valves others say I don't. I had the computer reprogramed, the boat runs great, I just want it to last. I have done 82mph on gps at 5300 rpms running a 27 pitch quad 4 prop.