ItsAllALie

Hello, New member and new owner of a 2013 SL63 AMG. Great car and a hell of a deal, 43k miles!. Basically a new car at working man retirement prices. Ive been looking into the ECU upgrade and there seems to be a few companies making decent claims. The two I'm looking at are Weistec or RennTech. Weistec offers one with 166hp/.246torque. and Renntech comes in around the same numbers but considerably more. Can someone share some experience with the Weistec? Thanks.