waveridr85

iTrader: (4)

Ok, i just bought a y-pipe and a high flow cat, now i am debating the issue of getting a catback (i would get the obx if i were to) or to just buy a mufffler from ebay. what yeilds the highest hp gains for the $$$. any input is appreciated.

Midknight MAXX

iTrader: (1)

There are minor gains with any cat-back unless boosted. Most people buy cat-backs for looks or something cool on their mod list (look at mine ). Go to your local muffler shop and ask how much 2.5" piping with a resonator (to prevent horrible noises) and a muffler of your choosing will cost, then compare that to cat back prices. The HP diff is minimal if any.

waveridr85

iTrader: (4)

so i guess i should just buy a nice looking muffler from ebay for like 60 bux go to a shop buy 2.5 inch tube and a resonator?

happyricefob

iTrader: (7)

from wat i heard greddy SP gets the most gain, second is a'pexi/obx... but greddy is a bit louder, and a'pexii/obx tends to sound closer to stock...

i wouldn't recommand ebay muffler unless u have a turbo/SC/nos, cuz their piping is big and there is no gaurrentee tat it'll provide gains... and most of them requires welding which is another $50 or so rite there =X so why waste $$? jus save up and get a complete catback system...

Midknight MAXX

iTrader: (1)

If you have numbers post them. This conjecture is what got me in trouble.

All of them should be welded and if you get the whole thing done by a shop they'll give you a decent price on the entire install.


As any place that sells mufflers they usually have them in more than one size. Truth be known in this Civic flooded world they are'nt 3" (for boosted cars) so just ask seller. There are no guaranteed gains just crap like 1-5 HP or up to 10HP. Once you start looking you'll notice it.


The only Pro to cat-backs is that you can always unbolt it and sell it if need be.