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Old 05-25-2016, 11:08 PM   #1
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DIY Homemade Mac Prochamber

I've been looking to put a prochamber on my v6 but don't want to spend the money for the real thing, so I decided to build my own. Not gonna look like show room stuff but I'm not worried, it'll look better after its painted.

So for those who don't what what it is, it's basically a mid pipe like and X or H pipe but better.

I'm using the skin off of a very large muffler from a Toyota Camry I had sitting around. But you can pick up a few pieces of sheet metal at a hardware store but don't get plain steel as it will rust very fast.

Tools/Parts Needed: Some type of metal cutter (I'm using steel shears), a flat head auto body hammer (will post pick later), pencil/marker, tape measure, straight edge, grinder, welder, galvanized sheet metal, some exhaust pipes/connectors, and a drill (will explain later).

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Old 05-25-2016, 11:12 PM   #2
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I am currently working on this project and some others and will post when I can. 1st pic is a prochamber last pick is the blueprint.

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Old 05-26-2016, 12:22 AM   #3
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That's awesome bud. I'm going to keep up with the thread to follow your progress. Looking forward to some videos to see how close you can replicate the prochamber sound.

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Old 05-26-2016, 07:08 AM   #4
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What's the benefit? I actually misread the thread title at first and thought it said procharger lol. Would be awesome to have a DIY on that. 80)


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Old 05-26-2016, 07:28 AM   #5
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Quote:
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What's the benefit? I actually misread the thread title at first and thought it said procharger lol. Would be awesome to have a DIY on that. 80)


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because doing stuff on your own rocks....

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Old 05-26-2016, 07:46 AM   #6
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No I understand that part... What's a prochamber do?


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Old 05-26-2016, 09:11 AM   #7
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No I understand that part... What's a prochamber do?


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It's another mid pipe variation. Give a nice "hollow" sound to the exhuast is the best way I can describe it. Instead of an x or h, it's almost like the started with an x, cut the middle chunk of it out and added a box. Supposed to make more power, but we all know how that goes. I love them purely for the magical sound the make.

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Old 05-26-2016, 10:20 AM   #8
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Yeah I googled it earlier. Need to check out some sound clips. Not my thing since it's not "street legal" even though it doesn't affect me. I just want to keep everything good just in case.


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Old 05-26-2016, 01:30 PM   #9
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Yeah I googled it earlier. Need to check out some sound clips. Not my thing since it's not "street legal" even though it doesn't affect me. I just want to keep everything good just in case.


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You can still have cats fabbed in.

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Old 05-26-2016, 07:06 PM   #10
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Day 2:
I cut out all the outside pieces. They look like crap I should have gone for galvanized steel, as a result the metal is out of shape, but then again, it is going under the car and not going to be seen and painted with a coat of high temp red paint. I'm not the best welder as the pic shows but atleast I can do it.

I had to cut out 2 sheets of each side and layer it with 2 layers because the metal is thin. Also I had to weld up holes from drilling out the spot weld in the muffler. I used a ball pein hammer to taper the end of the pipe so it would stay in place as I welded it to the sheet metal. The second hammer is the body hammer I posted about earlier.

The reason it looks shiny is because I was grinding the rust off and the spot weld flush with the metal.


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Old 05-26-2016, 09:11 PM   #11
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Quote:
Originally Posted by wmschoonover View Post
Yeah I googled it earlier. Need to check out some sound clips. Not my thing since it's not "street legal" even though it doesn't affect me. I just want to keep everything good just in case.


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What makes them "not street legal"?
I have the prochamber with stock cats and resonators.

Dasan458...Is that what the inside of the prochambers look like?
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Old 05-26-2016, 09:22 PM   #12
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What makes them "not street legal"?
I have the prochamber with stock cats and resonators.

Dasan458...Is that what the inside of the prochambers look like?
If your talking about the diagram then yes. Idk why they would not be street legal, because they a mid pipe just like an X or H pipe. Here's the inside on on that was bent to hell.

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Old 05-26-2016, 09:41 PM   #13
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Just buy the one on eBay...

Mac Prochamber 3 7 Mustang 2011 2014 Mid Pipe | eBay
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Old 05-27-2016, 07:49 AM   #14
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Might have just been the ones I googled. But they were listed as off road only. But I didn't go too deep into it since I am done with exhaust for my car.


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Old 05-30-2016, 04:28 PM   #15
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gonna put this project on hold right now I had my truck poop on me and my Stang is the only thing running. Also I managed to find a prochamber at the junkyard and got headers off a sn95. Don't have the money for cats though 😭

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