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08-31-2013, 04:39 PM   #1
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Prochamber Hesitations

I've have the 'American Thunder' cat-back exhaust installed on my 2002 GT (I think that's the 40 series muffler). The sound was great, but I felt like I only really heard the exhaust with my windows down or if I was punching it. I wanted a little more, but I didn't want to set off car alarms... After some research I found reviews about the MAC Prochamber and how it's pretty mellow for an O/R mid-pipe. Sounded like exactly what I wanted!

Well, I just installed the prochamber Friday morning. Got in the car and the sound was great with a low rumble and aggressive. (Much better than any sound clips I've ever heard in YouTube)

I've only had the car out a few times, but I'm really starting to have second thoughts. When I'm out I feel like I've got to shift at 2k otherwise I'm going to get a lot of attention from cops. I feel the same way at a stop and I really start the smell the car, it's just screaming: "Look at me, I'm running an O/R pipe!". (I'm still waiting for my chip to come back from AmercanMuscle. I'm hoping once the car is tuned for the prochamber the smell will be less of a distraction. )

Also, after I've installed I'm starting to worry about things I've never thought of, such as something as simple as getting new tires. Am I going to have to put the stock H pipe back on just to get new tires?

I hope I'm just over reacting and this is just a case of buyer's remorse that will pass in a week or so. I definitely love the sound and the extra flow is nice. Perhaps I should invest in some high-flow cats and that will help put my mind to ease. Maybe it's really not that loud and it's just the transition from the stock h-pipe.

Is there anyone else running this exhaust setup? Have you had trouble with gaining lots of unwanted attention or getting the car serviced for its basic needs?
 

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08-31-2013, 06:30 PM   #2
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Re: Prochamber Hesitations

Put longtube headers on the car. It will tone it done some.
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09-15-2013, 06:54 PM   #3
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Re: Prochamber Hesitations

Not sure if anyone is interested, but as I couldn't find much information on this topic throughout the web, I'll post my experiences in hope it helps someone else.

I really couldn't find anyone who had placed cats on a standard length O/R Prochamber. I was quoted about $350.00 for a muffler shop to weld-in some hi-flow cats (they would supply the cats). I decided against that route and purchased some compact flowmaster hi-flow cats and did the install myself.

Amazon - Flowmaster Cats

I cut the pipe and attached the cats with some high quality lap joint clamps. It was a close fit in terms of the length of the cats and the straight area of pipe itself.

The pipe went in well enough. I had to adjust the way the cats connected to the pipe to allow for proper fitment, but that was simple enough by loosening the clamps and getting everything tight, than tightening the clamps.

Both cats fit under the car without touching the undercarriage. The was plenty of space on the passenger side, but the driver side just fit, maybe a 1/4" of clearance.

The cats got rid of the smell and cleaned up the sound. I can post a sound clip if anyone is interested.
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