Free Flow System

[SmoothSteve3]

Hey everyone-

 

I really really want to take the catalytic converter out of my exhaust system....but I personally have no clue how to do it. I've got a 1990 VIN T 3.1 Lumina....does the converter just bolt on? If not, then I'm assuming you guys do your own welding and whatnot (since no certified shop will give you a cat-less system). If it is just a bolt on.......then what size of pipe would (length and width) would I need to put in place of the cat? Thanks a million for all the help you guys give me.....I'd be hopelessly lost without it

 

SmoothSteve3

[Robby1870]

Hey everyone-

 

(since no certified shop will give you a cat-less system).

 

Dont go to a certified shop 8)

[Guest Eurolumina92]

just gutt the cat remove the cat buy or use a long drill bit and brake the contence of the cat up and remove it then put the cat back on

[TeeJay3800]

I was in your situation a year ago. Gutting that cat has its advantages since you can't tell by looking at the car that he emissions part has been removed. I decided to completely remove it. Since the cat is welded at the factory, I used a reciprocating saw to cut it off. Then I replaced it with a 2.5" diameter (around 3' long) straight pipe that a friend MIG welded on for me. 2.25" would also work fine.

[sonyman87]

personaly i wouldnt cut it out but replace it with a highflow one. sometimes it pays to be legal. i would hate to get a fine for an exaust without a cat.

[93GTP]

Yeah, I agree, and they arent even that expensive.

 

Carsound's are very high quality units and can be had on ebay for around $35 bucks.

[TeeJay3800]

Yeah, if you are emissions conscience you may want to do that. Especailly if you live in a state with regular or on-the-spot emissions testing. Your exhuast system will flow better with no cat, but with a stock setup, you wouldn't be able to take advantage of the added flow anyways.