Quote:
FJVP previously said:
Use caution when looking at chips that are 6 bucks...Most are just a resistor and do absolutely nothing.
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They do something... screw up your gas mileage, and turn on the check engine light!
If toyota could get an easy 5 to 10HP out of the 4.0L without affecting fuel mileage and driveability they would have. The resistors some on ebay sell "fool" your computer into thinking it is cooler outside, and/or the engine coolant is at a cooler temputure which makes it run richer. Too rich of a mixture does not give more power.
I think with todays technology Toyota has figured out how to program a computer so it works best for mileage and power than it will with a "false imput" to the computer. Twenty years ago when most auto manufacturers were making everything run way too lean those may have done something.
