Pump fuel mxzx440

[sledboy127]

Hey guys, im looking at buying an mxzx440.

I was wondering if you can run pump fuel in them how the come from ski-doo or do you have to put low compression doms in them?

 

[sloppy2nds]

change the domes to low comp and run pump gas. better on top end with lower compression. it will detonate with the race domes on pump gas and melt down the front side of your pistons. very not good. put a bigger engine in it unless youre planning to learn backflips. its a heavy sled with a small engine.