19-11-2013, 06:17 PM
If you don't want to have to repeat turbo adjustment process you could probably adjust it further than you need and just control it with the fuelling.
My car felt best at around 24 psi with the Lucas but could be pretty black if throttle wasn't applied progressively. If you adjust the wastegate now you'll probably find that the current fuelling will already give you 23+ psi. The black mist I think means that there's more fuel than needed so more air is required. Mine was always completely clean on boost but could really coal off boost hence winding the compensator in a bit. It's all just trial and error. The good thing is that unlike petrol engines playing with the fuelling and boost on these is unlikely to go far enough wrong to cause any real problems. No electronic sensors to complicate the situation!
My car felt best at around 24 psi with the Lucas but could be pretty black if throttle wasn't applied progressively. If you adjust the wastegate now you'll probably find that the current fuelling will already give you 23+ psi. The black mist I think means that there's more fuel than needed so more air is required. Mine was always completely clean on boost but could really coal off boost hence winding the compensator in a bit. It's all just trial and error. The good thing is that unlike petrol engines playing with the fuelling and boost on these is unlikely to go far enough wrong to cause any real problems. No electronic sensors to complicate the situation!