Fabspeed McLaren GT / GTS Sport Cats (2020+) Speedster You must have access to

You must have access to a PC / Windows computer (Mac OS not supported) to upload your factory file information to us via email and in turn apply our ECU Tune to your Handheld device

Will NOT cause a CEL (Check engine light)

More power +9HP and saves 44 pounds 22 KG OFF the rear of all 997

HJS 200-cell sport cats for maximum performance and sound

Fabspeed McLaren GT / GTS Sport Cats (2020+) Speedster You must have access toWT (lbs) KG. s: 8 4 Replace the restrictive McLaren GT OEM 700+ cell per square inch (CPSI) catalytic converters with two ultra high performance 200 cell HJS German Imported Tri Metallic high flow catalytic converters for improved performance and enhanced EXOTIC car sound. Fabspeed HJS Sport Cats are extremely efficient in terms of air flow, flowing at 93 95% the rate of a straight pipe. The HJS Catalytic converters chosen by Fabspeed can support over