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Discussion Starter · #1 ·
I was recently given 3 free performance mufflers. Each muffler is 2.5 inch. I gave 2 away to my friends. These are prototypes for a company that isn't out yet, nor do I know if they will ever be out. So my question is, will there be any advantages or disadvantages to running a 2.5 inch muffler on 2.25 in exhaust piping for a 2.0? If so what are they?
 

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Discussion Starter · #4 ·
Re: 2.5in muffler on a 2.25in exhaust? (Jetta97GT)

Jetta97GT...the muffler has a very nice tone I was told. The company has yet to become public, so I don't know if I should divulge the name. It is stainless steel, and they gave me 3 for free!!!!
I was told I could take as many as I wanted (they had about 20 there) but only 3 looked as if they would fit my application. I don't know how loud it will be, but I'm sure it will be louder than my muffler that came with the TT aluminized system.
 

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Re: 2.5in muffler on a 2.25in exhaust? (JPawn1)

I'm running the opposite. 2.5" piping with a 2.25" muffler. I did this due to lack of backpressure and losing alot of low-end when combined with my 272 cam. I would say that there won't be much of a gain/loss due to the fact that in your case the majority of the performance change would be in the piping. With your piping 2.25" going into a 2.5" muffler, there isn't much of a chance for the exhaust to increase/decrease backpressure. I would slap it on IMHO. If there were any change at all, then it would be more in sound than anything else. http://****************.com/smile/emthup.gif
 

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Discussion Starter · #7 ·
Re: 2.5in muffler on a 2.25in exhaust? (passatrcr)

well, I'm putting the muffler on on Wednsday. I expect there to be a little difference in power. At least I hope there will be, since the design of these mufflers are different than the usual performance mufflers. The dyno plots from AWE show a 3-4 hp gain on some cars with just the muffler alone. I don't usually buy into hype so I'll see how it goes when I put this on, but at least I'n not BUYING into the hype. I'm just getting free hype http://****************.com/smile/emthup.gif

Thanks
 
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