Renntech offers it’s performance upgrade programme for already mad Mercedes C63 AMG in form of some ECU tweak. There are two levels available, ECU1 bumps up the power to 475 hp and 465 lb-ft of torque, while ECU2 goes mental and checks out 548 hp and 510 lb-ft of torque! which is good for a top speed of 187 mph.

Renntech completes the package with new stainless steel long tube exhaust headers, new performance mufflers which craze off already monstrous sound, fully adjustable sport suspension which gives control over ride height and shock damping. 

Big power is useless without control, so Renntech upgrades braking system as well by using 15.2″ carbon brake discs. 

ECU1 package is priced at  $2495 while ECU2 comes for $3495.

source : zercustoms