Civic-EG.com Forum 3.3.1

- Wed Nov 26, 2008 7:34 pm #80521 I was thinking of buying a high flow cat converter but I am not sure if it will increase hp or not? and if yes by how much? will it be a good add on to my EG? any feedback.

- Sun Nov 30, 2008 12:50 am #80958 You'll gain like 2HP MAX, not much. It is a worthwhile mod however, because your cat is old and probably pretty clogged up, causing a decrease in power and fuel economy. Getting a new catalytic converter should help to restore fuel economy and give you a couple more HP.

Last edited by trustdestruction on Sun Nov 30, 2008 9:06 pm, edited 1 time in total.

- Sun Nov 30, 2008 12:53 am #80961 As above you'll get 1 horsepower if you're lucky, not worth it as a power mod but certainly a fresh cat will help with everything else

[suspendedHatch]

- Sun Nov 30, 2008 8:59 pm #81131 Waste of money unless you're boosted. In that case, you'd want a larger diameter converter.

I'd call 2hp very optimistic. I don't think you'll see enough of a difference to be conclusive. Horsepower can vary by a couple hp from one pull to the next.

- Mon Dec 01, 2008 9:01 pm #81338 This is a cat that I was planning to buy http://www.jdmshit.com/RacingCat/
For me it only seems that it will be a straight pipe from the manifold till the silencer.

- Mon Dec 01, 2008 9:10 pm #81339 OooO... so you not lookin for a catalytic converter for emissions.. you just want to straight pipe it .. It will make your exhaust sound like ass ... but why not? they are pretty cheap and easy to install

- Tue Dec 02, 2008 12:56 am #81403 please don't get one of those

they make your exhaust sound like crap (raspy), gain next to no HP over a high-flow cat, and at the same time greatly increase emission of the poisonous gas Carbon Monoxide

EDIT: also, they rust, no matter how much stainless steel the seller "claims" they're made of

How do I know all of this, and that you don't want one? I had one.

- Tue Dec 02, 2008 4:08 pm #81497

please don't get one of those

they make your exhaust sound like crap (raspy), gain next to no HP over a high-flow cat, and at the same time greatly increase emission of the poisonous gas Carbon Monoxide

Yep, mine's currently got a straight through on it and it sounds like a pile of crap, after I've sorted my head gasket, that's the next thing on my list - to buy a catalyst converter and a decent back box!

- Wed Dec 03, 2008 5:44 pm #81741 even on a 1.5 SOHC Vtec will sound like crap?

- Wed Dec 03, 2008 5:53 pm #81744

even on a 1.5 SOHC Vtec will sound like crap?

yes got the set up on my 1.6 sohc v-tec
sounds god awful

in for chance is a homo club membership

you have to believe it to be in it

true story

#3 Member of CHANCE is HOMO club

- Wed Dec 03, 2008 8:57 pm #81797

even on a 1.5 SOHC Vtec will sound like crap?

yes got the set up on my 1.6 sohc v-tec
sounds god awful

any increase in your bhp?

- Wed Dec 03, 2008 11:32 pm #81817 Unless you're running a big turbo and have serious piping running through the whole car a high-flow cat will always be a better choice over a de-cat.

A tuning magazine did a test not so long back and the gains with both were poor, but the high-flow proved the better choice - better 'gain', and obviously better for the environment...

- Thu Dec 04, 2008 6:11 am #81922

A tuning magazine did a test not so long back and the gains with both were poor, but the high-flow proved the better choice - better 'gain', and obviously better for the environment...

http://www.importtuner.com/features/061 ... index.html

You gain like 1HP over a high-flow cat by using a test pipe. It's not worth the damage it does.