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Originally Posted by timzerofive
I've tried it, I had a full stand alone racing ECU (AEM EMS) on my last car with a custom turbo. Chipping a car still doesn't automaticaly equals better gas milage. The point that dinan article was making, however, is that most tuners claim their tremendous power gains under unrealistic environment (e.g. dyno room).
When they are testing under these unrealistic environment (mainly the temperature is too hot), the car's ECU reacts differently, which means the car's ECU tells the car to run at less then optimum power to protect the car due to higher temperature. The tuners than retune the map, so instead of backing off the timing and allowing the car to run more rich, they lean it out to increase power. Unfortunately, this increase in power only come in the dyno room. When the car is driving in realistic environment, that remapping doesn't even come into play.
I wouldn't say this chip offered by whatever this company is, is useless, but I would highly doubt its actual funtion. Perhaps I would be convinced of its power gain if a car is taken to a drag strip and compare back to back over and over again with and without the chip, and shows an actual noticeable gain.
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:rocks:
buying a chip for fuel economy reasons, or using that to justify your purchase is silly. If you think the chip will give you more power have a great time with it and please report back (no butt dyno please)
the claims just seem a bit unbelievable to me