so basically if i bought this: FORD F150 TUNER SCT SF3 FLASH PROGRAMMER + CUSTOM TUNES - eBay (item 190524088883 end time May-17-11 09:05:38 PDT) I can tell them that I want a tune for towing, performance, and economy they would do that for me, and then i can flash my computer and boom. and i can alway flash it back to stock. also, a truck with 127,000, this wont kill it will it?
will improve it a lot. i personally recommend the livewire so that you can keep it plugged up. this can monitor different parameters while driving
so what would a example of a chip be? sorry for all the questions but i literally know nothing about them