http://www.zzperformance.com/grand_prix/products1.php?id=537&catid=110

HTH

Quote from: GPChief on March 04, 2007, 07:59:26 PM
http://www.zzperformance.com/grand_prix/products1.php?id=537&catid=110

HTH

Thanx for the tip, but I'm going with a Magnaflow Y- it is cheaper, and the perfect size I need.  Thanks anyway :thumb:

Does anyone know/have the dimensions of the stock mufflers? (length, width, height)?

Thanks everyone

3" y-pipe outlets are completely pointless, you realize this yes? Going that big is going to hurt velocity. Two 2.5" pipes already way outflow a single 3" pipe. I thought you were keeping the stock 2.5" downpipe anyway?

Quote from: GutlessSupreme on March 05, 2007, 12:04:10 PM
3" y-pipe outlets are completely pointless, you realize this yes? Going that big is going to hurt velocity. Two 2.5" pipes already way outflow a single 3" pipe. I thought you were keeping the stock 2.5" downpipe anyway?

Hold on-  YES I am keeping the stock downpipe.  From there, I was going to run 3" exhaust back to the Y.  I am unsure of what to run for the Y.  From what you said, I should be running 2.5" pipes from the Y to the mufflers, correct?  I need your input on this...

Well I'm just saying.. 3" back to the Y would be ok if you DO plan on upgrading the downpipe to 3" in the future (and getting a turbo that could actually take advantage of such diameter).

If you're always going to have a 2.5" downpipe, having a 3" exhaust is going to do nothing but hurt your wallet and possibly performance. It sure as hell won't increase flow if it's bottlenecked at the 2.5" downpipe.

And if you were to get 3" back to the Y, take this into consideration:

3" pipe flow area: 7.07 sq-in
2.5" pipe flow area: 4.91 sq-in (x2 pipes = 9.82 sq-in

So even going from a 3" pipe to two 2.5" pipes is a big increase in overall area, there's no reason to go any bigger after the Y.

Maybe I'm missing some hidden mystical logic in this.. I don't understand how having a pipe split into the same size would ever help anything, as the flow would just be split and velocity would go down.

Stock 2.5 DP to 2.5 mandrel bent piping all the way to the mufflers

and be done with it....anything more is overkill unless your Kuntzie  :laugh:

Ok thanks for the info guys.  I'll do 2.5" from the dp to the mufflers then (including 2.5" Y)
Thanks. ;)

you won't be disapointed thats a good setup

Dave, is that the setup you have?

Sure is

Ok thanks ;)