I've got a 98' GT Convertible 5 speed. I'm interested in getting a Mac Off Road H-Pipe, and I'm putting Magnaflow/Magnapack in the rear. Is this a good combo or does Mac suck? Also, what's the difference between H and X pipe in dealing with HP and Torque? Lastley, does a straight thru muffler like these Magna's make a differance with H or X pipe, or is a 2 chamber better?

 

Mac makes ok stuff, its just the material that their made outta is cheap and will likely rust some years down the road if you live up north. x pipes will give you alittle more hp & tq up top and an h will give you better down low response and usually sound deeper. And straight through mufflers usually sound best with an x, and chambered with an h - but really any combo is gonna sound good

 

What are the best chambered mufs out there?

 

Mac does suck. If you want a good H pipe, try the one offered my MRT.