Hi,

Just wanted to know if the RennTech ECU upgrade works for a 4matic--thinking about a simple way to boost power.

thanks.

 

any updates?

 

Def not. Your options are seriously limited for the 350. 550 you have some options power parts wise like headers/exhaust maybe even a pulley kit. The only tune I know of for both is powerchip and I'm still unsure about them. I know a few other newer vendors may offer 350 tuning but you really want to be sure when it comes to something like that. I was considering having LET do a custom tune when they came to NJ but I couldn't make it over there. GL