03-15-2008, 12:11 PM
R1967 fixes a bug that I think has been around for a long time. It was causing the engine update to get called twice. What this means is that when the clutch is disengaged (so, revving or between gear changes), the simulation of the engine RPMs was incorrect. The fix seems to have the result of making things rev up a bit slower (when the clutch is out), so some of the car settings may need to be tweaked to get them to rev at the speed you want, again. Engine power when the clutch is engaged shouldn't be affected by this fix.