Williams Rx7 is back, previously ( 2016 ) this setup had produced 495hp @ 24psi….
Williams Rx7 is back, previously ( 2016 ) this setup had produced 495hp @ 24psi. This time around we have fabricated a new stainless 3.5″ exhaust system, upgraded the wastegate actuator and a few other small modifications. Back on the dyno for some additional tuning and 30psi we finished with 591hp at the tyres. This 13b Bridgeport is running 98 octane fuel and dual stage water methanol injection, the EFR9180 turbo (internally gated) combined with this setup still offering great response.