 High-Flow Cat, Will it affect O2 reading? |
 Nov 16, 2003 - 11:36 PM
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Enthusiast  Joined Nov 3, '03 From Iowa Currently Offline Reputation: 0 (0%)  |
Hi all. I'm kinda new to this forum. Just got my 96 St Coupe a couple of weeks ago. Traded my 99 Solara for it....and $3000
 Anyway, I am orderin up parts and I wondered if anybody with OBD2 has installed a high-flow cat. If so, does it affect the rear O2 sensor and set the cel? I ordered a corolla high-flow and according to the toyota part numbers, the st and corolla 7afe share the same cat so hopefully it will be a direct bolt on. Let me know if anybody has any info. Thanks. |
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Nov 24, 2003 - 12:46 AM
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 Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
Yup, just don't increase the size too much. 2.25" is perfect for most n/a celicas. 2.5" is better for highly modified n/a cars. If you make the tubing too large for the other mods then you'll lose a lot of scavenging and as a result low end torque (and you won't make any more top end power).
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Posts in this topic
96stcoupe High-Flow Cat Nov 16, 2003 - 11:36 PM
97sccelica QUOTE (96stcoupe @ Nov 16, 2003 - 8:36 PM) Hi all.... Nov 17, 2003 - 12:02 AM SpedToe169 Nope, it shouldn't mess with the O2 reading at... Nov 19, 2003 - 12:01 AM 96stcoupe Thanks guys. It should be here this week and if i... Nov 19, 2003 - 12:58 AM 3TST You'll probably have to modify the header brac... Nov 19, 2003 - 7:16 AM 96stcoupe Got the cat yesterday and installed it. 4 bolts. ... Nov 22, 2003 - 7:29 PM Drunken_Style Cat-back. The increase in piping size will increa... Nov 23, 2003 - 8:34 AM
96stcoupe Floored it today and the check engine light came o... Nov 25, 2003 - 10:49 PM |
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