[abnfto]

Hi Clint, you look like a bit of a turbo expert!
I was wondering, what sort of boost pressure would you expect to see from a standard 3CTE engine and turbo . I fitted a boost gauge to mine last weekend and am seeing 5-6 psi under typical cruise conditions. If I floor the accelerator from 50mph and the engine revs hard, the maximum I have seen is around 8.5psi. I don't see much boost at all at lower speeds / revs.
The reason I ask is that under acceleration there is a lot of black smoke (poorly burnt fuel) coming out of the exhaust and I wondered if the turbo boost was low such that the fuel to air ratio was higher than it should be. On my petrol engined cars, the Air Flow Meter would compensate for low boost but I haven't spotted such a meter on the Estima so I presume the amount of fuel injected is based mainly on throttle position and coolant / air temperature readings.
Thanks for any help, Robert.