I have a 99 cobra with hypertech programmer, KN cold air, 4.10s, flowmasters, and brand new nitto 555s. I was wondering about the mac h-pipe, I like it cause its cheap but ive heard some bad things about mac. I thought about an x pipe but ive heard they sound raspy when matched with flowmasters. Ide like to hear what yall think. My car just doesnt seem to have the power it should.