Thread: o2 sensor mod
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Old 04-05-2010, 09:13 AM   #8 (permalink)
2win2rbo
BigEco
 
Join Date: Apr 2010
Location: New Zealand
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Scepter Wagon Manual - '96 Toyota Scepter 2.2G SXV15
90 day: 27.41 mpg (US)

クレスタ - '93 Toyota Cresta Tourer S JZX90
90 day: 19.12 mpg (US)
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Quote:
Originally Posted by bandit86 View Post
tried searching but I'll post this anyways.

did anyone modify their o2 sensor circuit to fool the car into running lean?

You can add a parallel high resistance divider cct, say 12Vfeeding 14kohm to 1kohm to ground. Inbetween the resistors there vill be 1 Volts with very little current availible (unless you hook it up backwards) and if this signal is tied into the o2 wire the ecu will see a richer condition and go about leaning it out. if you hook up a microswitch to the pedal, it'll automatically go back to normal at more then light throttle.

Other thing I got on my mind, how about running smaller fuel injectors at higher pressure? The end result should be better atomization of the fuel
Hmmmm.... Sounds like a good thing to try.
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