|
I completed a build/tune on a fellow's gsr a couple months ago. Combustion chambers were reworked/valves unshrouded and prelude injectors were used to retain decent atomization. The engine handled an impressive (for a tumble chamber) 19.5 afr before it began to misfire at a 3000 rpm cruise. I locked in closed loop at 17.5 with a .5 afr swing. As expected, less rpm required more fuel. Unfortunately, the driver pulled the vehicle from my possession before I had a chance to do further testing.
|