Originally Posted by JHM2K
Wouldn't the RENNtech ECU/Pulley upgrade alone get you to 400 FWHP? I thought the kit was advertised to yield 404 HP on the SLK32 AMG, and the only difference in the SRT motor and the AMG motor was the ECU itself. In other words, I thought RENNtech's reflash cured this?
Seeing that the car is rear wheel drive without a lot of modifications it is going to be tough to get any FWHP.
The numbers quoted by RENNtech (and a majority of others out there) are crank numbers, not wheel numbers. The SLK32 for example is rated at 349 hp. The stock dyno's (that I have seen) for the car all show between 290 - 305 rwhp with both of the extremes being the exception. Remember that an engine and drivetrain are not 100% efficient.