Hello all, I have a 2001 psd crewcab 4x4 with 4inch lift 35's and I am looking to make as much power as I can without installing the hpop. Which tuner or programmer would you recommend. Along with exhaust and air intake. I am getting ready but I would like to buy the good stuff the first time. I currenty have a 80hp superchips plug in chip. It throws the service engine soon light at will everytime you accelarate. I took it out and installed a superchips downloader with 100hp. I works ok no more service engine light, but I cant adjust my speeddometer for correct tire size and it really doesnt impress me much with the addtional power. It looks like everyone likes the afe stage ll intake. How about 5" exhaust? Any info would be much appreciated. Also I have been looking at the ts performance 6 position flipchip. The only thing I am afraid of is it hooks up to my computer like the superchip plug in chip.Do you think it will make my service engine light come back on? I cant correct tire size with it either. I am not opposed to installing this chip if it is "the Stuff". Thanks, Randy.