Zaccyboy wrote:At low boost say 1250 rpm@ 15mg the figure is 55 I should lower it to 45, this is opening yes?
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I think on VW cars is vice-versa than my bmw. Values from High fuel and high rpm(right-down corner) means OPEN. Well if you have 70 80 at 4500 rpm and 50 mg , (last line and last column), that means low valeus means closed and high values means open.
Well you increase low values to open vanes.
At my bmw i have 80 90 in low area ~10 20 mg and low rpm and 20 30 at 4500 and 50 mg , that means 20 30 means open and 80 90 closed. I did these tests by flat map to value 10 and look at VNT ACTUATOR, is fully open.
If you are not sure about that, make map to 10 and one time to 90 and look in idle at vnt, you`ll see how is open and closed but in full load and high rpm values are for OPEN.
Well NOT BOOST means ~480 mg air ok ? with 480 mg air you can burn 20 mg fuel clean...well theoretically from 0 to 20 mg the requested boot can be 1000 mbar(no boost) , but is better to put a little bit more air ..you can follow 5-10 mg 1000 mbar , at 15 put 1100 and at 20 put 1200. Try to dont low too much boost under ~1700 rpm because of pedal responsivity.
I made tons of tests and hundred of writes in my ecu to understand how the fuck EGR and economy works. I can run with 4 liters at 100km outside with legal speed 80 90 km/h and i have 2.0 liters engine 170 hp.
In the city you cant do anything for economy..thats it, you need to push pedal more to get speed in first gears, i have ~8 liters at 100 km, but for a strong 2.0 diesel its fine to have 6 7 liters mixt
Egr blocking is for cleaner engine and better responsivity..and of course less work for turbo while cruising and economy better with 1 liter at 2.0 liter..maybe on 1.9 TDI ALH you will not feel too much economy because that engine is already economical.