Stevie Mo
08-22-2005, 02:46 PM
My goal is to loose 2 of the 3 cats.Free up the exhaust but keep the noise down and boost creep away.
I want to know if the stock muffler is super restrictive.I was planning on running an APS 3". Has anybody done this? Have I lost my mind? Let me know...
Flame suit on!
Steve.
05 STI.
4080wrx
08-22-2005, 04:25 PM
sti muffler is actually good a lot of wrx guys like to try and get this. go with turbo xs dp,midpipe,catback adapter, and high flow or straight through cat it allows you to use the sti muffler
goodluck
Stevie Mo
08-22-2005, 04:40 PM
4080wrx, Thanks for the info!
sykosis
08-22-2005, 08:34 PM
The STi stock muffler is good to about 380HP so it won't be restrictive with your setup.
4080wrx
08-23-2005, 06:40 AM
sti muffler is actually good a lot of wrx guys like to try and get this. go with turbo xs dp,midpipe,catback adapter, and high flow or straight through cat it allows you to use the sti muffler
goodluck
stevie,
i just noticed you have an 05 sti with the setup i recommended above you will delete 2 of 2 cats because the sti does not have a cat in the up pipe