Originally Posted by SRT6_Roadster
Don't tell me you are surprised by the over inflated claims of manufacturers?
The SRT-6 (SLK32) responds well to the Pulley & ECU upgrade. They work very well together and deliver more a measurable increase in power vs. going with only one.
I'll take the opinion of the racing test facility that I posted the article from... Glad you're happy with your pulleys. Did you get the ASP or EvoSport?