 plan on doing a 2.5 full exhaust. w/ high flow cat, help |
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 May 9, 2004 - 10:05 PM
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 Enthusiast  Joined Nov 12, '02 From Webster Ma. Currently Offline Reputation: 1 (100%)  |
So like the topis claims i plan on doing a 2.5 full exhaust. w/ high flow cat. BUT will i pass emissions with a high flow? anybody do it? i know i wont pass with the turbo. least i dont think i will. so i can take that off. but i cant jsut swap in an out a highflow cat and my stock cat on a custom exhaust. or can i? will the cat need to be DOT approved you think?
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May 9, 2004 - 10:15 PM
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Enthusiast Joined Sep 25, '03 From cranston RI Currently Offline Reputation: 0 (0%) |
when i had my 2.75 custom exhaust with the high flow cat, my emissions passed me... i dont see why you should have a problem man...
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May 9, 2004 - 10:16 PM
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 Enthusiast Joined Feb 10, '03 From Connecticut Currently Offline Reputation: 11 (100%) |
I think you maybe able to pass even with the turbo. PPL have been known to pass w/JDM 3s's before.
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May 9, 2004 - 10:27 PM
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Enthusiast Joined Nov 12, '02 From Webster Ma. Currently Offline Reputation: 1 (100%) |
alright. thanks guys.
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May 9, 2004 - 10:44 PM
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Enthusiast Joined Sep 25, '03 From cranston RI Currently Offline Reputation: 0 (0%) |
dont tell me you seriously listened to ME man.... i was expecting you to be like "jon, stop being silly.... you never had 2.75" custom exhaust with high flow cat..." its late at night... lol.... This post has been edited by celicarocker: May 9, 2004 - 10:45 PM -------------------- |
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May 10, 2004 - 12:24 AM
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 Enthusiast Joined Apr 15, '03 From San Jose, CA, USA Currently Offline Reputation: 1 (100%) |
Technically no you wouldnt be able to pass smog. In all 96+ cars the smog laws changed, old system was OBD, new system OBDII (OBD 2). Almost every high flow cat on the market is only OBD compliant, because OBDII is insanely harder to pass emisions.
Although, even though most high flow cats are not OBDII compliant dosnt mean you wouldnt pass, but from research, and on paper you wouldnt pass, real world tends to differ usually |
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May 10, 2004 - 5:49 AM
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Enthusiast Joined Nov 12, '02 From Webster Ma. Currently Offline Reputation: 1 (100%) |
haha dont be silly. thats what i was thinking B. werd. haha im not ghetto just funny to say werd and all.... thanks. obdII sucks. ill just try and find out. then let you guys know lol. -------------------- |
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May 10, 2004 - 12:30 PM
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 Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
2.5 is too big on an n/a 4 cylinder... I wouldn't go bigger than 2.25... even on a very built motor.
As for your original question... you should still pass smog... assuming you don't remove the cat completely and your car is in good running condition... This post has been edited by Kwanza26: May 10, 2004 - 12:33 PM -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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May 10, 2004 - 9:20 PM
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Enthusiast Joined Nov 12, '02 From Webster Ma. Currently Offline Reputation: 1 (100%) |
yeah i totally agree. on a NA car anyways. but the turbo need to breath. spool up will be so much quicker. -------------------- |
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May 10, 2004 - 10:01 PM
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Enthusiast Joined Sep 25, '03 From cranston RI Currently Offline Reputation: 0 (0%) |
 i dont think he knew your boosting.... man... when i get my 3.232 cuztom exhaust on its gonna be tizzight! fo rizzle.... ill stick with stock for now.... mmm.... wednesday between 8 and 9 in the morning... -------------------- |
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May 11, 2004 - 8:27 AM
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 Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
Honestly, it depends on what state you are in. The system works differently in different states.
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May 11, 2004 - 1:52 PM
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 Enthusiast Joined Sep 30, '02 From Washington Spokane / Coeur D' Alene Idaho Currently Offline Reputation: 11 (100%) |
is 2.25 exhaust good size for a turbo 7afe?
-------------------- yea your 3sgte is cool but ill stick to my 7agte
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May 11, 2004 - 2:58 PM
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Enthusiast Joined Mar 3, '04 From Hollywood, MD Currently Offline Reputation: 6 (100%) |
how much HP would be gained with say a 2.25 exhaust with high flow cat on a N/A 5sfe?
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May 11, 2004 - 3:14 PM
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Enthusiast Joined Sep 25, '03 From cranston RI Currently Offline Reputation: 0 (0%) |
probably nothing... NA 7a-fe's dont respond much to mods like that... -------------------- |
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May 11, 2004 - 4:36 PM
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Enthusiast Joined Mar 3, '04 From Hollywood, MD Currently Offline Reputation: 6 (100%) |
so people who put the greddy sp exhaust system on their N/A gt/st celi's did it for the low pitch growl? |
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