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01-04-2001, 11:29 AM | #1 |
Scooby Guru
Member#: 610
Join Date: Dec 1999
Chapter/Region:
VIC
Location: Vancouver, BC, Canada
Vehicle:2003 Lexus IS300 Graphite Gray Pearl |
Replacing stock cats with hi-flow cats
Emissions laws aside...the only problem would be with the O2 sensors correct? I'd throw a check engine light right? So if I have TWO hi-flow cats then I can plug in both O2 sensors and that would solve the check engine light being tripped...or does it not work that way?
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01-04-2001, 03:32 PM | #2 |
Scooby Specialist
Member#: 526
Join Date: Nov 1999
Location: Beaverton, OR, USA
Vehicle:1995 Supra Turbo Red |
You'd be better off putting a voltmeter on the two O2 sensors. Record the differences. Then install a high flow cat...or no cat. Then install a resistor in the rear O2 sensor to make it send stock-like voltages to the ECU.
In fact, someone on this board has done this. Try a search. Good luck! Sean |
01-04-2001, 05:02 PM | #3 |
Scooby Specialist
Member#: 216
Join Date: Aug 1999
Location: san diego, ca USA
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I replaced both my cats with a single high flow cat (and a turbo), and I have no check engine light. This is on a MY99.
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