f20b exhaust size

[CRXDEL501]

what does everything think the right exhaust size would be for an f20b?

2.5 inch or 2.75 inch.

[dougie_504]

60mm IMO

[CRXDEL501]

60mm IMO

Serious lol
2.35" doesn't seem right lol

[dougie_504]

2.36" actually, commonly referred to simply as 2.5".

But hang on, are we talking about the DOHC VTEC from the Accord (H22A head, 150~kw +/-) or the SOHC VTEC (110~kw +/-).


If DOHC, I'd consider 2.75" or 3".

If SOHC go the 60mm/2.5"

[CRXDEL501]

2.36" actually, commonly referred to simply as 2.5".

But hang on, are we talking about the DOHC VTEC from the Accord (H22A head, 150~kw +/-) or the SOHC VTEC (110~kw +/-).


If DOHC, I'd consider 2.75" or 3".

If SOHC go the 60mm/2.5"

Yeah it's dohc :)

I was thinking 2.75 but wanted to confirm

Going to get me a mega power r exhaust whoop whoop

[CRXDEL501]

i still cant decide between 2.75" and 3"... what does everyone think?
will either be getting skunk2 mega power R or mega power RR

[CRXDEL501]

Bump

2.75" or 3"?

[eg5civic]

Free inch bro.

Impress te ladies, bigger is better ;)

[senna]

Is your car N/A still? If so, 2.75" - if F/I 3"

This all depends on the rest of your system, cat and the intended use of your car...

[Jccck]

Going beyond 2.5" won't really free up any more power on a Motor like that.. It's up to you though, there's no downsides.
As Senna said, it depends on the rest of your setup.

[mattatnoosa]

Going beyond 2.5" won't really free up any more power on a Motor like that.. It's up to you though, there's no downsides.
As Senna said, it depends on the rest of your setup.

+1 2.5" for N/A. 2.75" / 3.0" for FI, GENERALLY speaking

[CRXDEL501]

Is your car N/A still? If so, 2.75" - if F/I 3"

This all depends on the rest of your system, cat and the intended use of your car...

Yeah still n/a
Larger throttle body
4-2-1 tri y headers
Cai
And Hondata

So in this instance?

[senna]

Stock cat? Just go 2.5-2.75" Thats all you'll need unless you are planning on going F/I in the near future

[CRXDEL501]

Stock cat? Just go 2.5-2.75" Thats all you'll need unless you are planning on going F/I in the near future

Oh nah hi flow cat

[CRXDEL501]

Free inch bro.

Impress te ladies, bigger is better ;)

Hahahaha you knob
Won't be impressing the girlfriends dad I'll tell you that

[senna]

Oh nah hi flow cat

I'd stick to 2.75 at the most man - its still only 2L displacement after all, no need to go overboard - its only gonna be louder and the drivability will start to suffer.

[oopoc]

Personally I would call 2.75 oversized on anything smaller than a 2.2L I would go 2.25 or 2.5 at most for a n/a less than 2.2L. The larger exhaust will only cause the throttle response to suffer, it's better to have a little bit smaller exhaust that flows faster, then the other way round.

[senna]

I would agree, but it seems the OP has the choice of 2.75 or 3", so the 2.75 is the lesser of the two evils as it were...

[CRXDEL501]

I got the choice of either 2.5" - 3" but don't know what's best thats all

Don't want 2.5" to be too small

[90LAN]

2.5 as the price of 2.75 would be a big difference in price because of the size of pipe
you should be worring about your exhaust manifold and cat

[CRXDEL501]

2.5 as the price of 2.75 would be a big difference in price because of the size of pipe
you should be worring about your exhaust manifold and cat

Nah price is all good lol
What ya mean lan haha

[CRXDEL501]

i think ill be going 2.5".

thanks all.

repped

[oopoc]

i think ill be going 2.5".

thanks all.

repped

Good choice.

It's not all about the diameter on the exhaust it's all about how quickly it get it out of the system. Sure bigger exhaust makes more noise, but you look like a d*ck making 100+db of noise and going nowhere.

[CRXDEL501]

Good choice.

It's not all about the diameter on the exhaust it's all about how quickly it get it out of the system. Sure bigger exhaust makes more noise, but you look like a d*ck making 100+db of noise and going nowhere.

2.5" exhaust... eg. buddyclub will still make 100db lol

[oopoc]

That was just a number I pulled out of the top of my head. Obviously it isn't big enough.....far too loud for me tho, or I could just turn my hearing aid down lol

[CRXDEL501]

That was just a number I pulled out of the top of my head. Obviously it isn't big enough.....far too loud for me tho, or I could just turn my hearing aid down lol

lol definitely not loud enough. but all good!

[oopoc]

:( I feel old. When I did the exhaust on the old d banger civic that was far too loud for me....but still legal :/ but that was a really deep drone (learned my lesson quick smart)

[CRXDEL501]

:( I feel old. When I did the exhaust on the old d banger civic that was far too loud for me....but still legal :/ but that was a really deep drone (learned my lesson quick smart)

i usually like it loud lol

[dougie_504]

i usually like it loud lol

It'll give you the sh!ts lol. Probably cause headaches if the resonance is bad, and if it drones too loudly on the freeway you'll wanna kill something.

[CRXDEL501]

It'll give you the sh!ts lol. Probably cause headaches if the resonance is bad, and if it drones too loudly on the freeway you'll wanna kill something.

haha.. i had buddyclub in my itr and loved it
the only bad thing was not being able to hear the person next to you talking.
dont know if thats a good or bad thing

[dougie_504]

Bad. Lol.

[CRXDEL501]

Bad. Lol.

Haha no way!