Found someone on modded selling a SCT XCAL 2 tuner for $80.00. I have an SCT 4 BANK chip now... I already called AM to see about the free tunes for life, they told me as long as im the original owner, i still get free tunes. I just need to supply the computer code, and the mods needed to calibrate the computer. But im kinda against having to send in the chip to have it tuned everytime i put new part on... I may not be able to get any other new parts for a few months.... Need opinions and need ideas.... I know i will still need to have a tune created. but can i change the gear ratio and tire size and all that blah blah with the tuner?