hi all

i have a weird problem with my escos,

it only revs up to 4000 rpm and only givs about 0.5 bar off boost, what can this be?

sometimes i goes like it should, but after 2 or 3 times i keeps hanging up at 4000 rpm again, its a big turbo cos.

things i was thinking about that could be wrong are

-ECU
-Chip( getting another one this week)
-actuator
-vacuum leak?

do you have any ideas? or had this yourself?

regards

roy.