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Green Brook Auto Repair

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AMG GTS Upgrades Now Available: Weistec ECU Tuning & Downpipe!

AMG GTS Upgrades Now Available: Weistec ECU Tuning & Downpipe | Image 1

Redline Speed Worx (RSW) is New Jersey's Premier Weistec Engineering Installation Center. Our Service Team is comprised of multiple Mercedes Benz Certified Technicians to ensure your AMG receives the proper level of care and attention to detail it deserves. We are proud to announce the release of Weistec Engineering's Performance offerings for the new Mercedes Benz AMG GTS!

Weistec M178 ECU Upgrade


The hand built M178 V8 Biturbo engine from AMG is a powerful motor from the factory proving it is very capable on and off the track, but even a perfect machine can benefit from finer tuning. Using the latest calibration technology and countless hours of testing, Weistec was able to achieve massive gains in both horsepower and torque through out the powerband. The Weistec M178 ECU Upgrade provides 118 wheel horse power and 134 wheel torque at lower RPM’s along with substantial gains in the mid and high range, making the power delivery far superior from the factory calibration.

What does all this mean to you?  More power, sharper throttle response, and a complete focus on the driver makes this the perfect addition to your AMG for a much more enjoyable experience for you.


  • +118 Wheel Horsepower Peak Gains
  • +134 Wheel Torque Peak Gains
  • Eliminated Top Speed Limiter
  • Improved Throttle Response
  • Optomized Fuel, Spark, and Boost

AMG GT Downpipe And Midpipe Upgrade

The AMG GT is poised to set the bar for what should be expected from a luxury sports car.  Weistec Engineering offers Downpipes for the AMG GT and the AMG GT-S.

Weistec AMG GT Downpipe Upgrade | Image 2

Engineered and designed with the most sophisticated Computer Aided Design tools, excellent fitment and the highest performance possible are guaranteed. Each Downpipe and Midpipe features 3 inch diameter piping and laser cut precision flanges to mate with factory mounting points, giving this system a perfect fit.


Downpipes come standard with internal Ceramic coating to keep heat within the piping, helping improve exhaust velocity while also reducing engine bay temperatures.

AMG GT Upgrades Performed by Certified Technicians | Image 3

The AMG GT and AMG GT-S Midpipes bolt to the Downpipes using a low profile V-Band flange, and terminate using OEM coupling to mate perfectly to the factory cat back exhaust.


  • 100% mandrel bent and TIG welded
  • Constructed of low carbon 304 Stainless Steel
  • Bolt-on installation
  • Improved exhaust note
  • Improved exhaust flow
  • Increased HP and Torque, especially when coupled with the M178 ECU Upgrade
  • Compatible with future products

Please Contact the RSW Service Team Directly for all Product and/or Installation Services!

New Jersey's AMG Weistec Performance Center Redline Speed Worx | Image 4

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