hi,
i have done some work on a c250 for a guy, pump is standard 6mm, for now.
turbo is kkk from Man truck
stainless 2.5inch straight through exhaust.
more fuel added by potentiometer.
custom downpipe.
went to the dyno today and i soon discovered from my egts and some experience that pump timing is out. Under further investigation i discovered some red paint marks on crank pulley, o dear, pump has been taken off by someone who doesn't know where timing marks are.
power started of at 188bhp and after a small advance i had 205bhp with 260 ft lb.
egts came down nearly 200degrees.
so, tomorrow i will check timing and maybe have to remove pump and fit correctly, i am nearly sure timing is still out.