I am putting on a manual (non-electric) 2 1/2" cutout. I have found a place that i think should work. It's the place/nook where the fuel filter sits, but on the other side of the car. I think it will be ok there. Or should i mount it close to the cat?
I want to cut down on the raspiness, and maximise tone. Will the location of the cat affect the sound much?
I am installing the cat as an inexpensive way to try out a different sound, not so much for performance.

Any suggestions?

 

The most common location, is the bend just before the cat. And yes, the cat will act as a "muffler", to some degree, if you put the cut out after the cat.

 

Can you give more detail on what exactley a "cut out" is and does? Thanks

 

Exhaust cut-outs

It allows you to switch from a muffled street muffler, to open, non-muffled exhaust, for more HP.

 

I put mine pretty much in the spot you are talking about. It works out pretty good there.........jt

 

Great, thanks guys. I think i will mount where jt has his as well. The maro is my daily driver so it may be better under there outta the way a little.

Cheers!

 

Considering your exhaust routing is far from stock, that isn't quite what I meant.

I meant, follow the factory crossover, then just as it turns into the cat, a cut out there would give it the straightest outlet, it could get, and it would be before the cat.

 

No, but the stock piping still runs through that same section. Thats where most of the ones I have seen are placed on thirdgens. Allows them to tuck alittle so they dont drag and places it back far enough that your not engulfed in exhaust fumes.

 

I agree. However, with my situation (3inch mandrel ypipe and stock system compatible 2 1/2" cutout, wanna leave it open everyday) having it back there will work for me.
I eventually want to run long tubes and have an electric cutout just after each header. That would sound sweet-as!

Good point about the fumes as well, jt

 

Can anyone show me time slip proof that there is ANY advantage to opening the exhaust??? I would like to see it. Just my opinion but on top of sounding terrible the small gain in horse power I dont believe will be translated to the time slip. Not to mention the expence and trouble involved in addin one of these to your system. IF you can see a significant gain from opening the exhaust, mabe you should rethink your system.

 

If you think open vs muffled exhaust has no HP benefit, then why do professional drag drag run no mufflers? Not for the weight savings.

 

Im not debating that there is a gain, if you read the post closely I acknowleged that. But 10-15hp is not enough to make your car sound horrid and not see ANY E.T. gain. Most pro classes are making well over 1000hp---thats a far cry from a 350hp street car. All ORSCA classes are required to run mufflers and those guys are running(depending on class) from LOW 4's to mid 7's in the 1/8(that's LOW 7's to mid 10's in the 1/4) all on a 10" tire thru mufflers at 3000lbs minimum.
See for yourself. http://www.outlawracing.com/

 

At the track I gained 1 tenth with the cutout open vs closed exhaust and 1-2MPH increase in speed. Not a big advantage but it does sound alot better.

 

I guess sound is in the ear of the beholder. IMO anything under 12:1 and less than 700hp needs a muffler to sound even half decent. Thats my point---1/10 and it sounds like crap. 4 or 5 tenth's might be worth it but 1???

 

Definately in the ear of the beholder cause there is nothing about a cammed open cut out LS1 that sounds like crap.

 

I'm getting it fitted today so i'll let you know what i think. Hopefully not too raspy...

 

Got it fitted. Came up great. Pretty loud (in a destructon-derby-car kinda way). Seems to be muffled a little by the cat. Bit of a fuzz magnet though! Sorry bout the huge second pic.

 

One more pic (not huge)...

 

This is how you do it!!!

 

Damn straight!