bks600

Hey guys I need some advice. I want to do a ecu upgrade on my 07 s600 would you guys even consider powerchip as a possible candidate or renntech. And what really is the difference? What is the proper way 2 go

trumpet1

I did it. It did improve the immediate response when pressing the pedal on the right but I don't know if you get $5K+ worth of kick.
Renntech did it for me. I removed the modules myself, (30-60 minute easy job) and sent it to them and had it back all within 3 days.
The only problem I have with it is a slight transmission jerk going from 1st to 2nd gear but ONLY right after I start the car up and leave the house or work. After that, it works great, and it doesn't do it everyday. It does it about twice a week on average I guess.

In retrospect, this car already has serious power and I think I would have kept the money. It will also chew up some tires with that torque.

bks600

If its not too much info, how much did it run you with the renntech upgrade? powerchip only cost around 3 grand

StephenK

I would do some more research on powerchip, and personally would stay away from Renntech. Lots of claims, that never add up to as advertised.

JRAMGV8

I'd go with Powerchip...

JRAMGV8

I heard the same issue before....

jbondox

about 4 months ago did it for a guy utilizing the Brabus ECU upgrade. took a few days because it had to be shipped around the world, but the end result was great

IngenereAMG

You may want to take a look at Veloce Performance. We have some great solutions for the 600 cars.

trumpet1

I'm glad I found this thread again as it is proof that I have made mention of a problem with shifting since my ECU/TCU upgrade. I just reported the jerky transmission problem I've had since my Renntech TCU upgrade and the representative at the location said I'm the first person to ever have this problem.