exhaust opinions(3" front to 2.5" catback?)

Q&A regarding engines, turbos, and intercoolers and power upgrades

exhaust opinions(3" front to 2.5" catback?)

Postby Shaggz00 » Wed Aug 11, 2004 6:03 am

I posed this question to Tim, but I was wondering if anybody else has this setup. I just ordered the Aussie DP and MP, but not the catback cuz I dont have the money :cry: but anyways, My buddy was sayin that we can put a 2.5" catback with no major effect on performance. I do not want my boost way at the high end, I like the streetable low end power.
I expect that running a 3" into a 2.5" kinda defeats the purpose of having the 3" :? . what do you all think? or will that help me with low end?

One other question, anybody notice any sort of clearance problems over the rear assembly with the 3" catback? keep in mind, that I like to play in the mud sometimes ,and when snow season comes...lez just say :twisted:
Members don't see the above ad. Register now - it's free!
'88 ST-165(Black) - Sitting... Waiting... Quietly... in the garage under 2 inches of dust...
'88 ST-165(grey) - gone to rusty Celica heaven
'91 MKIII Supra - 98% completion!
Gold Member
Posts: 1682
Joined: Mon Aug 09, 2004 12:13 am
Location: Silver Spring, md

Postby alltrac.net » Wed Aug 11, 2004 7:21 am

3" downpipe and midpipe is still better then stock, even if you only have a 2.5" catback. You will be limited to what the 2.5" can produce, which is roughly 350 horsepower. You won't notice anything bad because it will feel so much better then stock. When you do get a 3" catback you will notice a little more top end.

I would suggest doing it all at once but if you can't, you can't.
ST165, then ST165, then ST185, then ST165.

Yes I've been there.
User avatar
Site Admin
Posts: 593
Joined: Fri Dec 19, 2003 6:45 am
Location: Sparta

Postby silverarrow » Mon Aug 16, 2004 8:30 am

No problems with rear assembly.
89 240sx
07 Versa SL
Club Member
Posts: 638
Joined: Mon Aug 09, 2004 5:07 am
Location: Inland Empire, Southern California

Postby maroon_185 » Mon Aug 16, 2004 1:04 pm

yeah no real major affect except you will be limited with the 2.5 catback
Chris Fowler
1990 maroon 185 (rc swapped)
1991 red mr2 (3s swap coming soon) Dads

User avatar
Club Member
Posts: 859
Joined: Thu Jul 29, 2004 6:31 pm
Location: Owasso, Ok

Postby shoteh » Tue Aug 17, 2004 3:18 am

hey I was also considering the 3'' cat but i heard that they can be kind of loud. I like my car quiet except maybe the bov...but is it really that loud that it will bother me...and would 5 O's pull me over for it?
Established Member
Posts: 1164
Joined: Tue Aug 10, 2004 4:43 am
Location: MN

Return to Performance and Power

Who is online

Users browsing this forum: No registered users and 1 guest