The unfortunate thing is Toyota's TCCS uses the O2 sensor to create an offset value. So when you put this resistor in the circuit, the engine runs rich for a very short time, then the O2 sensor tells the ECM to trim the fuel. That trim (either short term or long term depending on the amount of correction) gets applied to both closed loop (when the ECM actually looks at the O2 sensor data) and open loop (when the ECM ignores the O2 sensor and uses stored values from a map in memory), so you actually end up running lean during open loop operation. Of course you could apply an opposite strategy, make the engine think the air is hotter and apply a rich correction factor, but in the end, the engine will not be running optimally. Open loop is most important because the engine operates in open loop at wide open throttle (WOT) when the danger of detonation and instant engine death is highest.Originally posted by tCXGreek@Feb 21 2005, 02:45 PM
This is something I saw starting to get popular a few years ago. It's just a resistor that you splice and that tricks the intake sensor into thinking it's getting more/colder air than it actually is... therefore dumping in more fuel. Where in reality you're not getting the extra air, just the extra fuel... It's bound to break something at some point... and $20 for a 20 cent resistor at Radio Shack isn't worth that much trouble.
Does that $2.25 include shipping???!Originally posted by moriarty@Feb 21 2005, 08:56 PM
send me your 2.25 and I can send you some garbage from my office.
but, then again, maybe it does what it says it will do.....
better yet, don't buy that crap.