Davis Technologies self learning traction control unit TM-9000-SL. Purchased three years ago and have won countless races with it. Easily removable from the car after the race is over. I will tell the buyer where i had the unit located(been in tech almost weekly and never found). If your getting beat by the guy who has great forward bite its probably because hes running this same unit. Will ship to Davis Technologies for quality assurance and can ship direct to buyer from there. Buyer will remain 100% confidential and will require buyer to sign a confidentiality agreement after purchase.