Close

    • Fabspeed Motorsport releases McLaren 600LT performance parts including sport cats, cat bypass, and ECU tune - Before/after dyno numbers

      It is great to have some dyno numbers for the rare McLaren 600LT. Fabspeed seems have a knack for getting in low volume high performance cars for development. This particular 600LT was used to develop Fabspeed sport catalytic converters, cat bypass pipes, and a 600LT ECU tune.


      Let's take a look at the parts.

      McLaren 600 LT Sport Catalytic Converters: https://www.fabspeed.com/mclaren-600...ic-converters/


      With 93% of the flow of straight pipes is there really a reason not to opt for sport cats? Maybe if racing and trying to eek out every last horse or wanting as much exhaust noise as possible.

      McLaren 600 LT Cat Bypass Pipes: https://www.fabspeed.com/mclaren-600...-bypass-pipes/


      The bypass pipes certainly are cheaper. Fabspeed states they do not provide noticeable gains on the sports cats or at least the difference is minimal.

      McLaren 600LT Fabspeed ECU Tune: https://www.fabspeed.com/mclaren-600...peed-ecu-tune/

      Here is the before/after graph with just the Fabspeed ECU tune:


      Now the before/after with Fabspeed sport cats included with the tune:


      There is much more area under the curve with the tune and sport cats. Peak torque increases by over 100 lb-ft at the wheels. Peak horsepower goes up by 74 wheel horsepower but you also get it 800 rpm earlier.

      The turbos past 5500 rpm start to nosedive with torque gains leveling off toward redline. The 600LT looks like it will really benefit from some greater flow up top and McLaren seems to have limited it to prevent it going toe to toe with the 720S. It certainly has a lot of potential.

      Great stuff as always from Fabspeed.


      This article was originally published in forum thread: Fabspeed releases McLaren 600LT performance parts including sport cats, cat bypass, and ECU tune - Before/after dyno numbers started by Sticky View original post