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Got the Mac Prochamber installed. It arrived yesterday (Thanks Spencer and Stage 3!!)
It feeds my Roush Off-Road exhaust (Borla Stingers tweaked to Roush specs)
It wasn't too bad. Honestly, the worst part of the whole deal was trying to unplug the O2 sensor on the passenger side.
Oh yeah, it is not plug n play - you have to cut your stock cats to H pipe assembly and insert the Prochamber into it. Pics will explain.
Anyway, I like it. It has mellowed out the 55-60 5th gear drone a lot. It sounds deeper too. I REALLY like that 60's muscle-car sound I've got now. I wish it was louder, but this is a good compromise between stock and really loud. I didn't have time to shoot any videos today; perhaps I can do some tomorrow or later this week. I'll get startup, idle, and some drive bys and interior stuff when I do shoot.
Th prochamber is cool...it's not an H, yet its not an X. It just has a box...that is supposed to make power by timing the exhaust pulses. It is not "just a box" either...when you look into it there are flanges that are staggered. There is some gee-whiz in the design..anyway, I did this mod for sound not power, and overall I am satisfied. The craftsmanship on the piece is VERY nice...quality materials, EXCELLENT welds, etc. I would buy Mac longtubes without reservation after seeing this thing.
Pics:
Just removed stock cats and H assembly - next to prochamber on left.
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My son and I are stacking them up and marking the cut area with a sharpie on the stock setup. I called Mac and they said this is the best way to keep from screwing it all up. You try to cut with the cats on the car and they said it doesn't always work out so hot.
![]()
Here is the Prochamber with the cats I cut off inserted and mocked up. I used my Rotozip and sacrificed One (1) metal cut-off wheel to the Gods of speed, sound, and horsepower. My son liked the cool sparks.
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My number one helper, with our finished work before installation.
I know, overkill on the safety...(hydraulic jacks, jackstands under frame rails you can't see, and my car ramps in case that all fails, plus my home-made giant 10" wide wooden ramps). But better too safe than not enough. It would be a bummer to get killed by stupidity on your birthday with your son watching.
![]()
Hard to see, but here it is in its new home:
![]()
It feeds my Roush Off-Road exhaust (Borla Stingers tweaked to Roush specs)
It wasn't too bad. Honestly, the worst part of the whole deal was trying to unplug the O2 sensor on the passenger side.
Oh yeah, it is not plug n play - you have to cut your stock cats to H pipe assembly and insert the Prochamber into it. Pics will explain.
Anyway, I like it. It has mellowed out the 55-60 5th gear drone a lot. It sounds deeper too. I REALLY like that 60's muscle-car sound I've got now. I wish it was louder, but this is a good compromise between stock and really loud. I didn't have time to shoot any videos today; perhaps I can do some tomorrow or later this week. I'll get startup, idle, and some drive bys and interior stuff when I do shoot.
Th prochamber is cool...it's not an H, yet its not an X. It just has a box...that is supposed to make power by timing the exhaust pulses. It is not "just a box" either...when you look into it there are flanges that are staggered. There is some gee-whiz in the design..anyway, I did this mod for sound not power, and overall I am satisfied. The craftsmanship on the piece is VERY nice...quality materials, EXCELLENT welds, etc. I would buy Mac longtubes without reservation after seeing this thing.
Pics:
Just removed stock cats and H assembly - next to prochamber on left.
My son and I are stacking them up and marking the cut area with a sharpie on the stock setup. I called Mac and they said this is the best way to keep from screwing it all up. You try to cut with the cats on the car and they said it doesn't always work out so hot.
Here is the Prochamber with the cats I cut off inserted and mocked up. I used my Rotozip and sacrificed One (1) metal cut-off wheel to the Gods of speed, sound, and horsepower. My son liked the cool sparks.
My number one helper, with our finished work before installation.
I know, overkill on the safety...(hydraulic jacks, jackstands under frame rails you can't see, and my car ramps in case that all fails, plus my home-made giant 10" wide wooden ramps). But better too safe than not enough. It would be a bummer to get killed by stupidity on your birthday with your son watching.
Hard to see, but here it is in its new home:
