Is there a noticeable difference from OEM to 2.5" cat and back zorst on DC2R?

[BlitZ]

Is there a noticeable difference from OEM to 2.5" cat and back zorst on DC2R?

[tinkerbell]

http://www.team-integra.net/forum/di...g+Common+Topic

[tinkerbell]

you can see why i am upgrading my 2.0in cat-back to a 2.5in mandrel bent catback...

[00dc2]

from blue to red the change is the cat and the header...

what cat you getting tinkerbell?

[tinkerbell]

i already have a 2.5in cat...

[e240]

you can see why i am upgrading my 2.0in cat-back to a 2.5in mandrel bent catback...

Don't forget to adjust the fueling....or massive lean out...LOL

[tinkerbell]

yep, for sure!

will probably add 5psi to the base of ~40 psi, i currently have OBD1 340cc H22A injectors in...

i was runing ~70psi base pressure with the 240cc B16A injectors prior...

+5psi should be good for another 15hp at fly without increasing MAX duty cycle

[BlitZ]

oh.. back to basics.. exhasut just seems so expensive.. ....

[BF]

The question was is there a noticable difference. I'm not sure, especially if you're running a standard exhaust manifold, because I think the benefits of a catback would be maximised more by having a good manifold than the other way round. I guess it depends how sensitive your butt dyno is; I'm not sure mine could detect such an increase - though I'm sure there are of course those amongst us who can notice and utilise the increase.

[VTECMACHINE]

yeah you can feel the difference. For me in terms of response, engine revving out smoother, and top end power was awsome!

[BlitZ]

The question was is there a noticable difference. I'm not sure, especially if you're running a standard exhaust manifold, because I think the benefits of a catback would be maximised more by having a good manifold than the other way round. I guess it depends how sensitive your butt dyno is; I'm not sure mine could detect such an increase - though I'm sure there are of course those amongst us who can notice and utilise the increase.

nah i ready got JDM 4-1 like that of the dyno heehhe

[szymonsta]

i think there is a noticeable difference. yes the outright gain in power is not that huge, but no one mod on a n/a b18c / k20a is going to make a HUGE difference without other ancilliaries being looked at as well. int his sense it is unlike many turbo cars where a simple cat-back and filter change may net quite large improvements in power and torque eg.r33 gts25t or s14/s15.

[fatboyz39]

we just upgraded our stock ITR system too top fuel exhuast system. There is a noticeable difference.

[VTECMACHINE]

yeah comparing products... I had a Buddyclub B-pipe on, which I swapped for a Spoon one. And the difference was good... wouldn't say amazing, but definately noticable.