IMHO
if you know what you are doing, they are a great thing.... if you don't its like a ticking timebomb. I had a friend that used one on his ranger and S10.... they didn't run for 4 months after he reprogrammed (he didn't save his current settings) so, if you buy one... BE CAREFUL thats all I can say.
In the hands of a professional, they are great... in the hands of a rookie, they are very dangerous to your truck.
thats just my 2c though
if you know what you are doing, they are a great thing.... if you don't its like a ticking timebomb. I had a friend that used one on his ranger and S10.... they didn't run for 4 months after he reprogrammed (he didn't save his current settings) so, if you buy one... BE CAREFUL thats all I can say.
In the hands of a professional, they are great... in the hands of a rookie, they are very dangerous to your truck.
thats just my 2c though