Originally Posted by Bosch-Man
They would in theory improve drivability...hence why the RS500 had the bigger inlet left on for the road car to help combat the shit setup!
IMO if you are running a stage 3 off the shelf map from a reputable dealer then you would have enuff safety margin to soak up the spacer
But of course always CHECK with an AFR setup!
How do they improve driveability phil?
Surely its going to do the opposite and make it less responsive to small throttle openings at lower rpm, and thats what most people consider driveability?