it has a profound effect on everything!

 

Maybe Robert DeNiro caught you cheating and took the hammer to your fingers?

 

LOL

 

i looked into those porter mufflers and def. like the sound. looks like about 300 a pair.

 

"Just throw him out in the alley and tell the cops he got hit by a car."

 

got in touch with russ at porter mufflers. 200 for aluminized steel 300 for stainless. they come in a 14" or 20" said he promises i will love the sound. just not sure i want to spend that much when my magnaflows arent even a year old yet. and i could go with 2 elec. cutouts w/ remote cheaper yet. what ya think gentleman?

 

If loud is what you want, go with the cutouts. I suppose shortening the exhaust may result in a loss of the "scavaging effect", but I'm not sure I buy into all that. I know there is something to that, but it is a plus and minus thing. You lose torque, but gain RPM faster. Hard stuff to calculate without a little trial-and-error. The cutouts will give you noise on demand and the option to quite it down when you need (or want to be considerate of your neighbors)

 

Why 2 cutouts? You'd only need one, and I'd personally mount it before the cat, so when you open it you're essentially bypassing EVERYTHING. If you go with a cutout that is. Personally, I think I'd take the cutout.

 

A cutout prior to the cat converter would definitely get you LOUD when you wanted it and would be less expensive. You would see some reduction in performance, but it would be LOUD on demand.

Whether you 'buy into' it or not it is a fact that exhaust diameter, shape and length all have an impact on engine performance. I had to learn about this stuff and write an essay about it back in the late 70s when I was in college earning my automotive mechanical and engineering degrees. Here's a couple articles that touch on the physics involved. There's also a chart that has the recommended diamater of pipe to use as a starting point when building an exhaust system.

Exhaust System Technology: Science and Implementation of High Performance Exhaust Systems

Exhaust System Basics - Hot Bike Tech - Hot Bike Magazine

How To Calculate Muffler Size and Exhaust Pipe Diameter | Exhaust Videos

 

Nice post...X2

Which all boils down to... A standard GM Motor relys on Back Pressure. To run Properly. Thus 2 1/4 to 2 1/2 inch pipes... for dual or single exhaust.. stock applications

Unless you have plans to build a motor to the hilt... Like 03SSLE said anything larger proves fruitless... Other than a bunch of "NOISE"..