When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So for example, if I purchase a tuner/CAI combo and get free tunes from BAMA, I can send an email in letting them know I installed 4.10 gears and they can send me a tune to correct the speedometer/mileage?