3.5L Super 44's Muffler Size

**zachwilliams** · 09-21-2009, 01:30 PM

Sorry if this is a repost, but I have been looking everywhere to find some info. on this, but have so far been unlucky in finding any. For my newest mod I will be cutting out the stock muffler and replacing it with a supper 44 muffler. I was wondering if anyone new what size inlet and outlet i should get if I want to BOLT it on and NOT weld it. I am going with the single inlet and outlet if that info helps any.

Thanks in advance

**coldlakemagnum** · 09-21-2009, 01:46 PM

I heard it somewhere that the 3.5 has a 2 1/4 inch pipe size

**zachwilliams** · 09-21-2009, 01:55 PM

so if the stock pipes are 2.25 then i need a 2.5 in muffler to fit over them and bolt on?

**Zoban** · 09-21-2009, 02:56 PM

The OD of the cats/midpipes are 2.25 so you need an ID of 2.25 to fit over and clamp on..

doing an RT(2.5 ID) swap out you use a 2.25 ID to 2.5 OD expander/reducer

**zachwilliams** · 09-21-2009, 03:12 PM

thanks for the help guys, I was also wondering if there is a difference between 44's and 40's. Which one would sound better on my 3.5?

**Zoban** · 09-21-2009, 03:14 PM

You'll hear both side for either but will depend truely on the sound YOU want not always what other like .

My self I love my Corsa's and will be a hard sell to ever seperate me from them ..

**zachwilliams** · 09-21-2009, 03:17 PM

Thanks for the help Zoban, I was wondering if you should buy a 2.5 inch inlet if the midpipes were 2.25, so it could slide over them

**DaILLestWun** · 09-21-2009, 05:35 PM

No. 2.5 will be too big. You need a 2.25 like everyone else just wrote above.

**zachwilliams** · 09-21-2009, 05:38 PM

sorry, that is what i meant

**Zoban** · 09-21-2009, 05:42 PM

No worries Zach .. I read yer reply in the way it appears you meant it ..

**SKULLBOY** · 09-22-2009, 12:34 AM

If you run the 2.5" Super 44s, you will need a muffler shop to fab up adaptors to mate with the 2.25" factory pipe........There will be too much room if you slide the 2.5" inlet over the 2.25" existing piping......

From the Cats back I run a 2.5" dual exhaust with dual Series 44 Flowmasters..........The guys in our club say my V6 sound more like a V8 then their V8s do!!!!!

**DaILLestWun** · 09-23-2009, 04:15 PM

Originally Posted by zachwilliams

sorry, that is what i meant

I understand what you were probably thinking though. See, to make 2.25 fit over another 2.25 they slightly widen one of the pipes so that it can fit over the other one. then clamp it and you're good to go.