frogmanjohn

if i run an exhaust cut out before my cat on my 89 tbi, will i trip any codes on my computer?

or do i need to run it after my cat?

john

Dewey316

It will be fine. I run a cut-out and No cat.

Having it open will lean things out, as it cuases the exaust to scavange the cyls better. If you have the ability to tune, you might need to richen things up a hair.

frogmanjohn

so did you just put a cutout in place of your cat?

john

Dewey316

yes

frogmanjohn

did you go ahead and get a 3" c/o or did you go with 2 1/2"? any pics?

john

Dewey316

http://www.cardomain.com/id/dewey316

Pictures can be seen there. It is 3" because I have a 3" catback, and 3" Y-pipe. I flanged everything, so my cat is a bolt-in switch now.

frogmanjohn

nice, i like the interchangeability for smog purposes. good idea. i could probably do that with a straight pipe and keep some backpressure on the system and sound better going through my flowmaster, huh. any sound clips of your cutout?

john

Dewey316

I'll put one up tonight. I had taken it down for a while. When I get home, I'll toss it back up on my webserver.

Dewey316

I will add, my car will sound diffrent than yours will, Mine motor is cammed, so it has quite a diffrent sound that a stock LO3

frogmanjohn

what is that cam that you said is for sale on your car domain site?

Dewey316

I need to change that. It is not for sale anymore. Its in the car for time being.

Dewey316

ok.....

CLICK HERE for a link to a quick video so you can hear the cut-out.

frogmanjohn

sounds decent.

john

TonyC

iTrader: (1)

No codes here either, works great, sounds awesome