I know it's not a good idea to turn the IP up to much but what about turning it down to get a little better mileage?

If you really want that, just adjust your linkage so that you don't get full movement on the IP (so it doesn't hit the stop)

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For Sale: 1982 MB 300TD
1995 Chevrolet Suburban 6.5TD

Sold: 1980 IH Scout Traveler- Nissan SD33T Diesel

...or just adjust your right foot and don't push the peddle down as far.

Yep, turn down the pressure on the accelrator.

That is the best adjustment you can make, as well as make sure all the filters are clean, tire presure is good, alignment is good, and no dragging brakes.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

As the others said the only improvement in mileage is your foot. If turn down the ip but don't change your driving style you'll find yourself pressing the trottle pedal more, which will negate downtuning the ip.

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1992 Mercedes 190D 2.5 turbo 5sp manual. EGT+boost gauges. Boost controller set to ~14.5 psi. 1 1/4 turns on full load adjustment. LPG injection. Next in the list is water injection.

The point is that turning down the IP is turning down the max/limit, it will have no affect on the fuel mixture/efficiency during driving other than to lessen the maximum flow/speed/power. Your foot can do the same, or limit the throttle travel, put a board under the pedal if you want an easy way.

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Gone to the dark side

- Jeff

They are all right. Just put a block of wood under the pedal or adjust the linkage.