Im looking to put a performance chip in my truck but I looked online and it says it adds up to 23hp instantly but it also give me different gear ratios and I was wondering does that mean I have to tweek things around or does the computer in the car do that for you? I would hate to buy it and next thing I know something goes wrong please help but give me an answer I asked this question last night and people were mean and not giving good answers... thanks
