johnboy, i too have a td aaz engine in my mk3 golf and i went to the derv doctor in derby who increased the boost from 0.8 bar to 1.2 bar and increased the fuelling whih made my motor bhp increase from 75bhp to 95 bhp. give gavin a cal mate.
On ALH code Volkswagen TDI engines, the ECU keeps an eye on injection timing through the number three injector. This injector possesses a needle lift sensor and a square-shaped or D-shaped plug (depending on model) that connects to the injection pump. As you might’ve guessed, the number three injector carries a premium (yet necessary) price tag. Started the engine with enthusiasm, and after 5 – 10 minutes the rough idle started again. Since the smooth idle control (IQ) was reading from 2.8 to 4.8 mg/str erratically only on idle, and it would smooth out on higher revs, next thing I did was to replace the needle sensor – third nozzle from a working TDI ALH, and nothing. VW Golf 5 Jetta 1.9 TDI BKC BJB BXE 105-135hp 2005+ Chiptuning,Tuned file,Custom Remap. Tuned file for Golf 5 1.9 TDI 105 HP BKC BJB BXE engine codes. This custom remap can be used also for Seat Leon, Skoda and Audi cars with similar engines 1.9 PD 105 hp. Increases power from 105 hp to around 135 hp. Please read Tools page to learn how to
It is not practical for a normal individual do-it-yourself mechanic to tinker with the ECU at the bits-and-bytes level. Also, most people don't get it programmed for "various performance levels". Your right foot selects how much power to use, no matter what it's programmed for. The stock ECU is already programmed very close to the best possible
A look at the VAG group 1.9TDi engine, and the best mods and tuning upgrades for it.Engines covered in this tuning guide include.PRE PD - 1Z, AHU, AGR, AH
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how to tune a vw 1.9 tdi engine