cat back size ??

[geo41e]

ok guyz..l know this has been covered abit..however i'm still not finding what i really need

engine is a d16a8 in my civic...
l got headers and a muffler...however i wanna know my ORIGINAL size cat back....

i heard that 2" is better all round and 2.25" is better for top end...
now my question is....which is better:
2" MENDREL BEND OR
2.25" PRESS BEND ???

is there anything in between that?? what is the "best" diameter for all round performance ?

[Kit]

mate, despite what everyone else says, i think you should only go 2 inch mandrel bent and no more.

[wynode]

Original is around 1 3/4 or thereabouts if I remember correctly. But thats presed bent and i'm not sure how thick the stock piping is/was.

As for what's 'best' it depends on what you want.

[geo41e]

what i want is overall power increase...that is..without loosing low end, but still increasing top end ?

these obviously a certain diameter to get the best of both worlds...l'm thinking, in betweeen 2" - 2.25" ?? 2.10" - 2.20" ??

[Kit]

like i said, get 2 inch mandrel bent.

if you're asking about pipe diameters then obviously you are getting it custom made... I would recommend you goto somewhere like liverpool exhaust cos out of all the custom work I have seen, their work seems to be the best.....

but still the quality won't be as good as a jap exhaust though.

get a stainless steel straight through muffler, and don't bother with any mild steel mufflers. and dont forget to ask for a really big resonator in the middle, cos otherwise it will be really loud.

Chris

[geo41e]

cheers kit
seems like 2" mandrel bent seems the choice, and what u mean by straight through ? as in,. without bending at all ? that would make my ground clearence even lower coz my cars pretty low already.

is there a big diff if its madrel bent straight through, and mandrel bent while following the original path of the stock cat back ?

[Kit]

geo,
no, the exhaust will definately follow the original path of the stock cat back.
it would be impossible to have straight cat back exhaust due to ground clearance etc.

when I was talking about straight through, I was referring to the muffler.

there are mufflers that are baffled (i.e. they have lots of chambers inside it for muffling sound), these baffled muffers are bad for flow.

Straight through mufflers don't have any baffles, if you had a look, you can see straight through it, there are no chambers, hence the name: straight through muffler.

Chris

[wynode]

You could go underaxle

[bennjamin]

You could go underaxle

only if ur a crazy ass fecker with no sense for ur own hearing , those around you or any pot hole deeper than 3 cms


Does look dam hott tho :P

[geo41e]

lol..yonas has a underaxel ??? or i must of mistaken his car for another blue eg with and ART sticker

anyway..thanks chris..l'm prolly gonna get 2" mandrel bend...not..with the resonator...what does Obe run..the guy with the buddy club exhhust civic ? the black one? Does he even have a resonator ?

[Kit]

lol..yonas has a underaxel ??? or i must of mistaken his car for another blue eg with and ART sticker

anyway..thanks chris..l'm prolly gonna get 2" mandrel bend...not..with the resonator...what does Obe run..the guy with the buddy club exhhust civic ? the black one? Does he even have a resonator ?

you're not getting a resonator?
ok.. try it, and see how long you can last!

[joneblaze]

You're not getting a resonator Geoff? Errm... *oh Christ*...
Like 95% of exhaust systems you hear out and about have a resonator (or two) sitting somewhere along the line. You might wanna reconsider that one. AFAIK, having a hotdog/resonator fitted on your catback only loses you a fraction of "power", if any.


Here, I've cut and pasted this from Team-Integra.net , hope it helps in relation to muffler flow question -


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