aurion borla exhaust?

[black grande]

i am looking to install a borla catback i wanted to know will i get any power gain and wanted to know what is the best mid pipe size 2.5 or 2.25 afcourse i want to get the best airflow i dont want to loose presure

[DJKOR]

The stock exhaust is 2.5 inch from the cat to the rear where it splits to the two mufflers after which it is 2.25 inch.

Don't expect any power gains from an aftermarket exhaust though unless you plan on changing the headers to something else.

[black grande]

so what do u think should i just do a muffler swap for a better sound or delete the resonater and a muffler swap

[DJKOR]

Depends how much noise you want. Removing the resonator can lead to a bit of drone inside the car while you are cruising along so leaving it in, or changing it to a different one is not a bad idea. You can leave it in at first if you want and then if you decide you want it to make more noise, remove it later on.

[SX6-84G]

Bit off the topic here and didn't want to create a new post for very small matter...

The right hand side exhaust is hanging lower then the other, checked connection and they are all good. Literally 90% of Aurions I seen have this issue and wondering what the cause is? and how to rectify so the dual exhaust are both at the same level?

[black grande]

so what is the best mid pipe size do i install so that i dont loose pressure and for perfect airflow

Edited October 4, 2011 by black grande

[GDUBB]

I just did a muffler swap. I still had to do some Dynomat to reduce the droning annoyance on long drives.

[DanielV]

I am going through a muffler swap at the moment and am looking into some magnaflow mufflers. discussed it with the exhaust shop and he doesnt believe there will be any power gains and that replacing the rest of the pipe is a waste of money as it doesnt need it.