I am having my cylinders checked to see what compression i am making. If I make low compression does that mean its time for new pistons?
I am not sure about these 4.6's but sometimes you can get away with just doing rings if the compression is too low
2001 Mustang Gt Bullitt, 105,000, mostly stock :nogrinner, 15% tint, led tail lights, Deep Dish Wheels, Nito 555's, shorty antenna, Head Turner.
Mac Off Road Chambered H Pipe, Magnaflow Magnapacks, SCT custom tuner, C&L Cold Air Intake, Exedy Mach 400 stage 2 clutch, Ford Racing 4.10 gears, Under-drive pullies, modded IAC.