Got a gforce chip online i was skeptical got it installed it and to my amazement got an extra 120 miles out of my tank around 5 mpg.Someone on here said take it out you will blow your motor.My question is whats the difference between a chip and a programmer all this gforce is is a little unit that taps in to the air sensor on intake and makes a huge difference in power and makes me get 17 mpg around town doesnt the programmer like uprev do the same thing?Dont they all lean it out a bit? Please any info would be appreciated i took it out for now untill i get more info definately dont wanna blow my motor thanks!