Hello - I have a Defender 110 that has a (low turbo) Discovery 200 Tdi engine in it. The vehicle has large capacity Allisport intercooler in it. I want to optimise the turbocharger/intercooler combination by adjusting the fuel pump slightly, which I know how to do, and by adjusting the turbo waste gate. I think I have to shorten the waste gate by turning the connecting arm clockwise. Is that correct, and how many turns do I need to make? I don't want to overtax the engine, and think the optimum turbo pressure is 14.1 psi. Can someone verify this for me. Thank-you.
I did loads of miles on a 200tdi set to 1bar (14psi) without any issues in fact I found that to be about the best setting, any more than that and it seemed to get louder and smokeyer without going any better. I ran a boost gauge in place of the clock to keep an eye on it and set the pump up to pull well without making excessive smoke under load. Just go careful or something will go bang if you over do things!
