Question:
What is the ideal exhaust set up for our rigs to gain more torque and/or horse power from the stock 2.0 engine?

2" exhaust or 2 1/4" exhaust 2 1/2" exhaust?
2 cats, 1 cat, no cats?
OE muffler, High flow muffler, duel muffler or no muffler?
Single exhaust or dual exhaust?
Stock diameter to second cat, larger diameter after?
Larger diameter pipe from 1st cat to tips end?

Is it even worth the $$$ to change the exhaust, or is there no gains?

basiclly that is my same question...what should i go with

I noticed a small gain at higher RPMs by replacing the stock muffler with the Thrush Turbo. If you go to big exhaust size you are going to loose back pressure. Quite honestly I doubt 2-1/4 or 2-1/2 will gain you anything at all. 2-1/4" dual exhaust on a V8 300hp engine is sufficient.

i know theres guys on here with 2-1/2 and 2-1/4 so looking to hear their input...mine doesn't look like 2" so guess ill have to get under there and measur....but looks like 2-1/4 to me

I know on mine the factory muffler was 2" in 2" out as I mesured it before I ordered my muffler.

I already know mine isnt original since it only has 1 mount welded to it and no til pipe just a turn down @ end of muffler and thought it was 2-1/4 but my memory has failed me before...will measure @ lunch today

In that case anything is possible <img src="/forums/images/graemlins/smile.gif" alt="" />

well decided not to lay in the slush today just to measure my exhaust so another day....in the mean time what size are you guys running and did you notice any benefits or losses as in acceleration,mpg,power and how does it sound?

Mine is 2.5" all the way back from the CAT. I can't say I noticed major improvements as far as MPG, horse power, acceleration, and torque, but I did in the sound. I can hear my exhaust now where before you didn't hear anything. ItÆs not quite to the fart can sound you get from a rice burner, but it is louder than stock. You could tell when I was coming from a half a block away. I did see improvements in all categories, but then again, you are moving a 3800 lb vehicle with a 2.0 liter engine. Any improvement of 10% really can't be felt in the seat of the pants. Now that my exhaust tip is missing the sound is about back to stock but I still have the minor improvements I gained with opening up the exhaust. IÆll see if the sound comes back when I put a new tail pipe on with a 2ö or 3ö tip.

Going from 2 ? to 2 ¢ I donÆt think will make that big of a difference. I think it will come down to price and availability of parts on hand at the shop instead.

Logansportage <img src="/forums/images/graemlins/patriot.gif" alt="" />

well i work for the parts store and basiccly same price for either muffler and only a few dollars diff for the stick of pipe...same price to have the guy bend it and weld it up for me so price isnt really the factor...more so dont want obnoxious sound or too big as to hurt any category of performance