10RedSS

Is anyone running a catless DP no resonator no muffler? Just curious about this setup. Pros and cons? besides noise level. thanks.

Miltown SS

BUMP...Would like to know this as well or same set up with only the resonator.

Goatah

Loud as hell, pops alot and shoots fire occasionally.

08SSREDHHR

Its loud, I know one guy that did it and he put the resonator back on. It drones and has a lil rasp.

RobSSTurbo

I am running dual side exhaust it's a little loud but its nice and also shoot flames.lol

EcotecRacer

Shooting flames and popping.....sign back pressure is needed usually

HiggySS

........unless you are turbo charged, then the popping and flames are normally unspent fuel burning up post combustion. A turbo itself provides more than adequate back pressure.

EcotecRacer

Actually it still applies to forced induction... Stock turbo in no way creates enough back pressure for a straight race pipe setup

I gained low to mid power adding cat back to my system

Now if you run the 256 or something I'd say go catless

10RedSS

Could it hurt the motor in anyway with this setup? Can someone describe the benefit of having back pressure?

mightymouse

i don't care who tells you what,TURBO CARS DO NOT NEED BACK PRESSURE!!! IT IS RESTRICTION!!! NA VEHICLES NEED BACK PRESSURE!! the bigger the and more free flowing the better. for our ko4 turbo,3inch from turbo back is perfect. has far as running open (no exhaust)it will be loud and sound like crap. it won't hurt the motor and you will see boost come on quicker and hold better. why??? NO RESTRICTIVE CATS!!! the quicker the exhaust is expelled the better.