price for renntech ECM upgrade and lowering module
Apparently renntech has an ECU upgrade available for the ML63. I have asked them to price out a ECU upgrade together with a renntech lowering module. Anyone heard good or bad about these two components? Does anyone have any idea what would be a fair price for the ECU upgrade. A price more than double the Stealth Auto price has been verbally mentioned which may be correct but seems high to me! It does solve the worry of having to pull the ECU out and send it across the border though.



