Exhaust Whats The Best Way To Neck My 3" Prochamber Down Into A 2.5" Catback?

Venom351R · Apr 29, 2012

ever since I got the Mac 3" prochamber Ive been racking my brain on how to get it to properly fit up to a 2.5" catback system. So with that said what is the best way of getting my prochamber to match up to my soon to be bought Borla system? I see it done all the time but I'm just not sure on the best easiest way to make it all work.

revhead347 · Apr 29, 2012

Have you test fitted it? Sometimes those ball joints taper down enough to fit with a 2.5" ball joint.

Kurt

Venom351R · Apr 29, 2012

No not yet since I dont actually have the borla kit yet. I'm just looking at it in terms of wanting to be able to drive the car once I go to put this system on. I dont want to have to deal with having to wait for more parts to come in or anything like that. Do they usually taper down enough to fit or is it a hit or miss type of thing?

EDIT: I went to Borla's Facebook page and asked them this question of if that system would bolt up directly to a 3" prochamber. I'll start there.

revhead347 · Apr 29, 2012

Most of them I have seen taper down enough to fit. Can't be sure on that particular one though. Apart from that, it would mean getting 3" socket joints and reducers, and cutting and welding your flowtubes. There is no other way to do it.

Kurt

Venom351R · Apr 29, 2012

can exhaust shops open up the end on the flow tubes more so that it would fit on the prochamber? I went out and grabed my dynomax mufflers that have the flow tubes on them. They slide right up inside the pipe of the prochamber.

Like these?

http://www.summitracing.com/parts/FLO-15925/

94blackcobra · Apr 30, 2012

How about this?

http://www.sears.com/shc/s/p_10153_12605_SPM5856765403P?prdNo=2&blockNo=2&blockType=G2

Venom351R · Apr 30, 2012

I have one of those actually and just thought of using it today. I test fitted my dynomax mufflers w/ flow tubes on them up to the prochamber and it slides right up in side of it, so I'm going to try the pipe extender on that and if it works then it should work for the borla kit.

Venom351R · May 3, 2012

the one I have only goes up to 2 1/2. I'll stop in and talk with an exhaust shop and see what they say. They should be able to expand that flow tube to fit over the ball joint on the prochamber.

Matthew Johns · May 8, 2012

go by a muffler shop and have them make you about a 4in. adapter piece take a 2.5" pipe and they can expand it enough to slide into the 3" muffler and weld it up problem solved might cost you $20-$30.

Exhaust Whats The Best Way To Neck My 3" Prochamber Down Into A 2.5" Catback?

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Apparently my ex-husband made that mistake.

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Apparently my ex-husband made that mistake.

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