tuning jtd - cam lift and duration and head porting.
Has anyone or does anyone know what the standard jtd cams are in terms of lift and duration.
Anyone had them re-ground?
Anyone done any head work for flow?
Just got to thinking, what makes the BMW diesel so good? especially with its broader rev band - and engine that revs past 5k, responds to a remap very well and without smoke, even with the dpf removed.
Is it the cam profiles that allow it to rev so well? (the power does start a little later than the jtd)
I know the usual turbo nutters route is fmic, big turbo, remap, perhaps clean up some smoke with water/meth etc etc, but has anyone ever played with cams and head porting?