SergeSLK

Hello everyone!
I want to share my own experience of supercharger tuning and ecu tuning after.
To my mind, there are a lot of people who knows that you could easy add a few hp with supercharger (Kompressor) pulley changing.
I started do that half year ago, and achieve good results right now only.

MAIN PROBLEM:
There are no any chiptuing service which provide pulley adaptation ecu tuninig. All of them, with whom I contacted try to sell something standart.
Thats was the reason why I start to learn how my M111evo engine works and tune it by myself.

I started with pulley mod. M111evo has Eaton M45 supercharger with 80mm original pulley.
I swaped that pulley to 68 mm one. That small pulley required lathe working with pulley hub which was made at my workshop.
After pulley swap car started accelerate at lower rpm, because boost starts earlier, 1.8 bar is the maximum boost with 68mm pulley.
But I don't feel that it goes really faster.

Next step - ECU tune.
There was real problem.... because Siemens ECU....... Sim4LE.....
I don't know why but its a big problem, none know how to chip it.
But I have my own solution I spent weeks of investigation and made more than 150 attempts and finally chip it.
And my black SLK start accelerating really fast.
I wished to check power on dyno.
Results made me happy!
209.5 hp
276 Nm

Original is
163 hp
230 Nm

But there not at all.
I have plans to swap fuel injectors and install smaller pulley, install performance header etc.




SLK200 R170 M111evo Sim4LE 209.5 hp