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Arragonis · 12-26-2009, 01:42 PM

If the engine has an ECU with a map, you may be able to get a remap to use less fuel, but you get less torque as well. If its a mechanical pump you can modify the pressure. A popular mod with Pug 306s TDs in the UK is to give the fuel regulator screw a turn in the right direction until you get smoke and then back a bit to get more power. You may be able to go the other way to use less fuel. The lean-ness of the mixture doesn't matter too much I don't think (ready to be corrected on that though).

I'm not convinced of the airflow effect on TDs. A popular mod with my car is to get the intake from a 150hp version (mine is 130) and fit that to get more power but I don't think there is a lot of credible evidence of the benefits unless you mod the rest of the engine too.

If you want the best economy then go for the smallest TD engine. There is a new Volvo V70 (which is not a small car) with a 1.6 litre Diesel available here. Does 177 lb/ft of torque and 870 miles on a tank.

12-26-2009, 01:42 PM	#7 (permalink)
Arragonis The PRC. Join Date: Oct 2009 Location: Elsewhere. Posts: 5,304 Thanks: 285 Thanked 536 Times in 384 Posts	If the engine has an ECU with a map, you may be able to get a remap to use less fuel, but you get less torque as well. If its a mechanical pump you can modify the pressure. A popular mod with Pug 306s TDs in the UK is to give the fuel regulator screw a turn in the right direction until you get smoke and then back a bit to get more power. You may be able to go the other way to use less fuel. The lean-ness of the mixture doesn't matter too much I don't think (ready to be corrected on that though). I'm not convinced of the airflow effect on TDs. A popular mod with my car is to get the intake from a 150hp version (mine is 130) and fit that to get more power but I don't think there is a lot of credible evidence of the benefits unless you mod the rest of the engine too. If you want the best economy then go for the smallest TD engine. There is a new Volvo V70 (which is not a small car) with a 1.6 litre Diesel available here. Does 177 lb/ft of torque and 870 miles on a tank. __________________ [I]So long and thanks for all the fish.[/I]