[JanDaMan]

Thinking of doing ECU on my SL65, but do you need to send in your own chip? I didn't see any detail on the RENN website of how it is done. One shop I called said they do it that way, but not knowing, that seemed odd to me.

 

[Liquid Assets]

Yes you have to send them your ecu and even tcu.

 

[Kalstar]

Have you looked into Eurocharged? 562hp 726tq at the wheels. (assuming 20%DLL) that is 675 crank HP and 871 Tq.