Ah. Now I understand your confusion.cl2447 said:I have found a few sites that sell machines or boxes, similar to the yellow box they use to adjust rpm and timing at the factory which will change settings in the computer. My question is there are no performance chips that simply plug into the cpu?
Well put! A good lesson learned by another "fresh-outta-college"!!kcrudup said:<snort>
It's two wires connected to one of the resistors in a multi-resistor-pack dual-inline-package. IOW, all it does (by splicing into one of the wires from the engine-coolant sensor, most likely) is make the ECU think the engine is cooler than it really is to enrichen the fuel-air mixture.
THAT BEING SAID, I'll admit I did the same thing with my fresh-outta-college 88HP I-4 Chevy Cavalier, but that was a low-tech OHV pushrod engine with throttle-body injection (AKA an "electric carburetor"). You could run that sucker on Gumout for 30 full seconds. While it would theoretically work, there comes a point in the powerband when all you'll do is waste fuel.
I think it's pretty much an automotive fact that if it's on eBay and the words "performance" are part of the sales pitch, 99% of the time it's a scam.