Mac pro-chamber and mac 2.5???
 

what is the difference in the pro-ch, and the regular 2.5 offroad, it sounds better? if so, why? isnt it just a 2.5 system too?

I want better sound, plus my current h-pipe is vibrating on my crossmemeber and driving me nuts, so i will sell mine and get another, perhaps an x-pipe. thnx....

MAC Pro-Dumps
 

I have the Pro-Chamber Dumps. I think that is what you are talking about. Only difference is that the dumps are part of the muffler instead of being welded on. Mine is pretty loud. It is hooked to a MAC off-road H-pipe. No headers yet. At full throttle, everyone on the street is watching to see where the roar is coming from.

Bad89stang have you ever ran your car at the track? The only reason I ask is we almost have the same car.:)

Ok, so are they just mac mufflers with dumps? if so, i want some, do they just bolt to the flowtube, or weld, and your done...thnx

ok what your asken i think is whats the diff between the pro chamber and a reg off H...a prochamber is sorta like a x pipe ..the pro chamber is alittle quieter then a off road H...if i were you id save your cash and just go with the off road H

I already have the reg off road h, so now i've heard 2 different things, so let me get this straight, the pro ch is naother kind of h-pipe? but you say kinda like an x? Thas cool, im just gonna save up for longtubes.

yes the pro chamber goes where a x or h pipe would go..it has like a box in the middle where the exhaust gathers and its suppose to push it out better blah blah waste of money if you ask me...i have mac long tubes off road h and cat back and its sounds awsome...