How to start tuning a G3 TDI?
Hi, I am new in this forum, from Hungary. I bought my golf estate TDI 1 year ago. I made the necessary chassis works and now it would be the time to start tuning it a bit. The engine is ALE, and not tuned. Tere is no error message from the computer. I just blocked the EGR last week. Some effect can be felt already. A mechanic told, that he hears bad noise from the injector nozzles. Knowing this, my question is if I would like to get approx. 150 HP out of this engine, does this require tuning nozzles, or the stock ones are fine for this level? If tuning ones are needed, which sort of do you suggest? And if I simply put these in, what would it mean without further modifications to the engine? Would I get any extra power, or just after e.g a chiptuning? Would it even work? Fuel consumption effects?
Another question is around boost pressure. It seems, that I do not have the correct one fitted, therefore the blue and the red tubes are connected from the charger, and the regulator valve is out of use. It is a cylindrical one. I made some measurement, and now there is 0,7-0,8 at the top, but after 2200 rpm the engine feels to be just running, but I cannot feel the power increasing. The mechanic told, that I should buy a factory one which sould be a rectangular shape one. Do you think this is really useful if i would like to make chiptuning later?
And does anyone know what is the factory boost pressure for this engine? I found different info, the Haynes book writes 0,7 bar, but I found 1,2bar in the VAG files.
Thanks for replies!