Best settings for Fuel Economy on B4V

vixentd

Veteran Member
Joined
Jan 21, 2004
Location
Vancouver, Canada
TDI
1997 B4 Passat tdi, 1996 Passat B4V
1996 Passat B4V, Just complete timing belt and running great as always. Have a friend with Vagcom and we will check and adjust timing.

Last time if I remember correctly we set near the top line on the graph. For fuel injection quantity what is the best number to put in for fuel economy. \
Thanks
 

turbodieseldyke

Veteran Member
Joined
Jun 6, 2010
Location
Free Mustache Rides
TDI
98 jetta
Your foot determines fuel economy.

If IQ is too low, it may smoke at idle. Higher IQ will use less fuel, but possibly run too lean if you need the power. So, set it high enough that it doesn't smoke, but not too high.
 

Mongler98

Top Post Dawg
Joined
Mar 23, 2011
Location
Northern MD (HAGERBUSH)
TDI
98 Jetta TDI AHU 1.9L (944 TDI swap in progress)
raw egg under the accelerator pedal
tape over every seam on the exterior of the car
proper alignment and tire quality and inflation

once you start throwing money at performance parts you can get better mpg IF you keep off it, price for mpg increase is a few years to pay off at 35k miles a year but that also comes with other issues im not going into.
best bet, get a scangauge II and learn how to hyper mile.
timing will have little to no effect whatsoever as long as within the graph of MPG improvement. not anything your going to notice anyways.
 
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