differences (other than looks which is subjective) between an SI/SO vs a SI/DO system? I am thinking of putting a Flowmaster 70 series (I tow alot) SI/SO on my truck. Thoughts?

 

From what I gather, going SI/DO will add for looks, as well as spreading the noise of the engine out. If you want just performance and not into looks and making sure the system itself will fit right around your truck frame, SI/SO with larger pipes can provide the same performance. Someone please correct if I am wrong.

 

I too am going with the si/so side exhause flowmaster kit of my 93... i just dont like the duel exhaust on that truck..

csonka.. what part of pa are you from ?

 

If you tow, I wouldn't bother with Flowmaster. Get a nice cat-back system.

 

I reside here in Centre County, you?