I have a computer tuner and was wondering if people still use this system or what is used these days. It is from digital horsepower inc. and will plug straight into a laptop. It only has one cord coming from it, so maube something is missing that would link it to the car?? Also from digital horsepower I have a PCM that was calibrated to the mods of my car at the time. Is there any use for these parts anymore? If so how much money should I ask for each?

chris