Hello. Has anyone used services of this company?
Anything to comment 
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I´m coming in June to Kassel. RPM Tuning Systems is going to install
this kit to my car:
http://www.rp-motorsport.de/glader/g60-leistungskit-2.htm
Also "Überholung" to G-Lader.
http://www.rp-motorsport.de/glader/g60-instandsetzung.htm
Please write in german or english (finnish ;)) , but it´s better that I write in english so you can understand 
.