The MAC Prochamber is "off road" due to the fact it has no cats, the "box" houses its "H" pipe.
There is a MAC Short Pro Chamber, part number PC2105, that looks to only replace the H pipe section that is about the same size as the Ford X pipe. They sell it on Nino for $299. It would seem that this part simply replaces the stock H pipe and leaves the cats in place. This is what I was referring to and it would seem that it would not be an offroad piece and only replace the H crossover. Anybody install this short MAC Pro Chamber? Oh, and the Flows run about $285 on Summit too.
Here are 2 clips of mine with the Pypes O/R H and Flowmaster axlebacks. The first is cruising at 70 then punching it. The second is 0-100. Both are wih the windows UP! It is MUCH louder with them down!!!!!
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Just be aware if want the short prochamber ? you'll be required to cut out your stock H-pipe section...As for the flows ? they run cheaper at $279 on www.tillmanspeed.com that also includes shipping
According to the Ford X pipe instructions, you have to cut a small section of each pipe in front of the X pipe to mount the X pipe. I would assume that it would be similar with the MAC. But, the Ford X pipe is a bolt in using the same clamps. Is the MAC a weld in or a bolt in? Anybody do just the short prochamber?
So would it be fair to summarize the two choices as being the difference between better sound and slightly better performance. If what I've read in other threads is right, the X pipe and Ford mufflers give better straight through exhaust flow. The H pipe and Flowmasters give much deeper better sound. Is this an accurate description or am I off base? For top end, which setup would be better? If it sounds like I am still indecisive on which one I am going to choose, that is right. I am tempted to mimic the Shelby GT setup with all Ford parts. But, I do like the Flow sound. I'm not normally one to stall a decision, but I do like to here as many opinions as possible.
Does anyone have a sound clip of Mac long tubes, Offroad Mac Prochamber, and flowmaster mufflers? This is the exhaust combo I'm thinking of buying.