Renntech’s 783 HP Mercedes-AMG GT 63S “R” Is Almost A 10-Second Car

A simple (but not cheap) ECU upgrade has enabled this GT 63 S to set a new record at the drag strip.

Fancy A Stanced Rolls-Royce Wraith Or Dawn? Renntech Has A Solution

The Dawn and Wraith get an ECU remap and a lowering module that works with the standard air suspension.

813 HP Mercedes-AMG E63 S Estate Dips Under 3 Seconds For 0-62 MPH Sprint

After being subjected heavy tuning, this hyper estate has become quicker than some current supercars.

Renntech’s Mercedes SL65 AMG Black Series Is More Powerful Than Lambo Aventador SVJ

The hardcore German supercar now has 810 horsepower and 1,000 pound-feet of torque available on tap.

Chiron Vs. 760HP Mercedes-AMG GT R Race Shows How Fast The Bugatti Is

The tuned GT R is no match for the Chiron, but just how big of a difference is there between those two? .

Renntech’s 813 HP AMG GT R Is Now The Fastest Mercedes On The Nurburgring

The upgraded GT R ran the course 7 seconds quicker than the stock model – but the tuner thinks it can do better.

700HP Mercedes-Benz CLS63 AMG Sounds Like It’s Seriously Pissed Off

This tuned second-gen CLS shows bystanders at a car meet how a V8 should sound.

RENNtech Details R800 Performance Pack For Mercedes-AMG E63 And E63 S

The mods include not just a software tune, but a turbo upgrade too.

Renntech’s Modded Mercedes-AMG GT R Is The Bomb With 825 PS

Besides the extra muscle, Renntech’s tuned Mercedes-AMG GT R has some bodywork upgrades, too.

This RennTech-Tuned G500 Convertible Is A Very Different G-Wagen

This drop-top Geländewagen listed for sale was privately imported to the United States and supercharged by RennTech.

Renntech Injects Mercedes S560 With 584HP, Plus Other Upgrades

Compared to the S63 and S65 versions of the car, the Mercedes-Benz…

RENNTech’s 615HP Mercedes SL55 Is As Good As They Got In 2004 [w/Video]

Back in the early 2000’s, if you couldn’t afford an SLR, the…