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Discussion Starter · #1 ·
morning all,

as mentioned on my other thread I have just started my first uni project. Looking through my results for the part throttle run I have noticed that at 4000RPM fuel consumption drops. But every where else in the rev range ie from 1500rpm to 4500rpm it increases at a constant rate. I double checked and did another run at 4k but the same thing happened. The engine is a 2.2 vauxhaul ecotec. This only happens on part throttle runs not full throttle.

I am proably going deeper than I need to but I really want to know so any links or info would be great


ps the engine has had a hard life on the dyno so maybe this is the issue!?
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