The Mercedes GT-S is the second Mercedes-Benz vehicle fully developed by AMG, the company’s Affalterbach-based performance division and long fabled engine builder. The resulting vehicle is nothing short of spectacular and its 4.0L V8 BiTurbo engine is an incredible platform to build performance upon.
RENNtech lightweight forged billet turbo wheels feature a dramatically larger than stock impeller (inlet side) and an increase in the turbine trim (exhaust side). This combination of high quality, lightweight components compensates for turbo lag despite being a functionally larger turbo. The cartridge supporting shaft is also larger and stronger, therefore designed to handle the larger wheels and additional power. This entire cartridge is then fine balanced as a complete assembly to compensate for these increases. The impeller and turbine housings are then precision CNC machined and flow tested in-house to fit the larger internal cartridge. The end result includes gains up to 180 hp and 161 lb-ft of torque.
More power isn’t the only performance benefit as RENNtech’s turbos spool quicker, and offer a more responsive throttle and immediate power delivery thanks to a reduction in exhaust back pressure, rolling resistance, higher RPM’s and a lighter rotating mass. In addition, their turbo upgrade kit functions with the OEM oil and coolant lines. This isn’t just an OEM turbo charger with machined internals; but a dramatically larger, more powerful turbocharger that blows away anything else on the market!
The RENNtech performance turbo upgrade is truly the ultimate upgrade for your AMG GT-S. Check out the key features of this product and some images below. You can also browse through all RENNtech products here.
Key Features:
- The RENNtech Stage I Turbo Upgrade comes with an RENNtech ECU Upgrade
- Larger impeller (inlet) and turbine (exhaust) cartridge
- Cartridge shaft is larger and stronger to support larger wheels
- Entire cartridge is fine balanced as an assembly
- Lightweight forged billet wheels
- Less rolling resistance offers quicker spooling
- Virtually no lag with impressive throttle response
- Precision machined impeller and turbine housings
- Up to 716 HP and 656 TQ @ crank
Notes:
- This Turbo Upgrade requires an additional core charge, which will be credited upon return of OEM turbo core to RENNtech
- We have found the new M177 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz. We typically see higher baseline numbers than claimed by the factory. Numbers will be dependent on conditions and fuel quality.
- Power gains are calculated with stock numbers measured by RENNtech
- To reach the maximum power level, RENNtech downpipes, diverter valve and high-flow air filters are required.
- Our numbers will be dependend on conditions and fuel quality.
AMG GT-S (C190) M178 Stock Performance:
- 503 HP @ 6,250 RPM; 479 LB-FT @ 1,750-4,750 RPM
AMG GT-S (C190) M178 Modified Performance :
- 716 HP @ 6,250 RPM; 656 LB-FT @ 4,500-5,500 RPM
