924doorEG

Hey guys, I got a stock b20 in my eg and im planning on putting cams and a gsr head on eventually. I was wondering what exhaust you guys think would be best for flow...Right now i have a 2.5 header to a stock cat with 2inch piping to a gsr muffler.....What im stuck between is 3 options.....

1. Go 2 1/4 piping with no cat and my gsr muffler...
2. 2 1/4 piping no cat to a vibrant sleeper muffler...
3. or go 2.5inch piping with high flow cat and a dynomax/raptor muffler....

what do you guys think? I really dont want anything loud, just better flow.

NotAJDMFanBoy

3. cross sectional area of a pipe increases quite a big as you start increasing the diameter. A B20 is big enough to benefit from a bigger exhaust.

Keep your stock catalytic converter. The high flow cats that actually are cats burn out pretty fast because they use cheap catalysts to keep the cost down.

924doorEG

So you dont think 2.5 will be a over kill for a stock b20 for now?

fungus mungus

It will be overkill NOW, but when you put a GSR head on it and cam it, it will need to flow. You don't want to have to go BACK and do a 2.5-3" exhaust after you spend $$ on a 2-1/4", do you?

If you have a B20 with a VTEC head, it's going to need to breath...2.5 is the minimum I'd go. Yeah, it'll get loud compared to the 2" but the 2" pea-shooter exhaust will KILL your power on a B20 VTEC. Depending on your cams, you may be setting VTEC in the stratosphere in order to avoid a huge dip in power at the crossover.

I went from a 60mm Apexi WS2 to a 3" mandrel bent exhaust on my 84.5x89 GSR (basically a 2.0 L) and gained 9 whp and a 13 ft lbs of torque plus was able to drop my VTEC crossover back to a reasonable 5800 RPM (down from 6800 RPM using the WS2). Yeah, it's loud and that sucks. But the car runs the way it's supposed to.

fm

924doorEG

Makes total sense man, thanks for throwing it out there for me man......Now just one other question.....Have you ever heard of a raptor muffler? it sounds gay n its only 40 bucks, just kinda curious about it?

fungus mungus

Haven't heard of it, but took a look online. Read the description: "pure performance sound" = LOUD! Not sure how long it'll last...I bet the sound dampening material on it will disintegrate within 6 months. Best spend a little extra for a better muffler.

fm

EJ1_CRIS_909

Quoted from another post::::

Red_Army

3 in. end of story.
look in the all motor section. theres dynos of STOCK b16a's with a better overall performance on just adding 3 inch exhausts.

then buy the muffler that floats your boat. maybe a resonator too.

EsotericImage

iTrader: (8)

go here and get a kit cheap>
http://www.vrsexhaust.com/TUBING_KIT.../honda_tk.html

then get whatever res/muffler u want..

I have magnaflow and i love it. no looks from the cops and is quiet till you get on it

924doorEG

Cool guys thanks alot for all the info, now can anyone recommend a muffler? i got a gsr one now and love the sound and look of it, thats why i was thinking the vibrant, ive had magnaflow and im just not too fond of it you know?

What about a type r muffler?

EJ1_CRIS_909

rsx type s

924doorEG

whats the inlet on the type s?

HondaPartsHero

Ha, buy my brand new Apexi WS2 midsection (2.25" mandrel bent bolt on) and 06 Si muffler (2.25" no welding needed bolts right on). I have some sound clips of it on my car in the ad.

http://hondamarketplace.com/showthread.php?t=2957353

EsotericImage

iTrader: (8)

^^ my Magnaflow

I would go with 2.5" with a B20 especially if your going for more power later on.

B20's have good torque already so the extra flow wont hurt you.