is that one of those chips that makes you engine run a little richer? if so then its a scam. but i'm not totally sure what "redline" is. maybe someone else is familiar with it.
That makes your car run richer. It hurts power, not helps it. If there is cold air going into the engine, then yes you get more power because there is more air going in. But if the computer thinks there is more air going in, then it puts more fuel in to compensate, which means worse gas mileage and not an optimum mixture, which means less power.
