high flow cats

I've got a 91 integra LS and I'm looking at possibly getting a high flow cat. My engine is pretty well all stock at the moment. Would getting one be a good idea right now? Should i have a better exhaust first? And are the Bomz cats you see on Ebay worth the price? I'm abit sceptical of Ebay that "ebay performance" stuff so any insite would be great.

I say go for it, get the HF cat. The stock cat is very restrictive. The only thing is, if you were going to get a new Exhaust and you are going to pay someone to install, may as well have the 2 done at the same time and save on Install, but if you are a do it yourself type person, I would asy go for it (IMO). I dont know about the Ebay cats, I got a custom Catco from www.summitracing.com to match up perfectly to my stock for like $80. Since then, I have removed my Converter and am running test pipe till E-Check in another year or so.

Ok, thanks for the info...i can do that myself, easy stuff there....:D How much of a difference in performance will i notice with just the cat??

perhaps you'll find this site useful:
http://www.randomtechnology.com/technical.html



"...with the right catalytic converters, you don't have to sacrifice any horsepower to make an engine emissions legal."

hope you dont mind stanky-ass exhaust :apuke:

hope you dont mind stanky-ass exhaust

So my exhaust is going to stink a little then..?.. Will it really be bad enough to make a hi-flow cat not good for daily driving???

I have DC headers, Cheap OBX Racing Cat, and Tanabe Exhaust on my daily driver sedan...

( I say cheap because OBX is just cheap copies of everything else..And I got it for Free..)

But if your behind my car it REALLY smells...You can also smell it in the car...I've grown used to it and I don't think thats good for me....But who knows...

I'm thinking of going with a straight pipe...

But for performance it helps..Not much...But compared to stock Yes you will feel a difference...

yeah, go test pipe! I love mine!

Originally posted by Doc1020


So my exhaust is going to stink a little then..?.. Will it really be bad enough to make a hi-flow cat not good for daily driving???
it shouldnt make it smell unless theres something wrong with your engine. the only time my exhaust smells is for the first couple minutes in the morning when i first start it. but it never smells while driving around. and ive tried to smell it cause i was paranoid back when i had to get smogged. just go for it. its not the best mod, but its a cheap and easy start.