[elscotto80]

I am thinking about getting 2.5 in. mandrel bent piping from that cat to the muffler with the regular muffler, nad a performance one. Will the size of the piping effect anything like performance or anything? Thanks so much.

 

[RedRocket]

Um, go all the way... Are you trying to increase breathing? Keeping the stock muffler with enlarged piping is not good... Big bottle neck... Do it right, and see a good gain (I assume).

Ryan

 

[elscotto80]

I still have the performance muffler i can put on, but will it really be bad with the stock muffler? Thanks for the info.

 

[thezfunk]

and I have exhaust questions too...I like the CTA motorsports offering for cat back but isn´t it alittle expensive? How/where do I go for a good high flow cat. I want the whole system to be rust proof if possible. Then there is that stupid flex pipe. can you get that in a bigger size or no...

 

[BamBam]

If you put the large piping with the stock muffler your throwing your money out the window because like rocket said "bottleneck." It´s still going to restrict airflow. Go with the performance muffler.

 

[TheBlade]

Here´s some more advice. I used to have all 2.25" piping and it was great, but the minute I went axle-back with 2.5" I started to loose some torque...but gained a few horses. Unless you´re going turbo I would actually recommend 2.25" cat-back.

And for the muffler...yeah, youre better off getting a performance muffler and bolting it to the stock piping then getting piping and no muffler. Can´t afford it all at once?, then just get the piping and go without the muffler for a week or so