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Martin White · 07-02-07, 12:35 AM

For what it's worth, my preliminary data on my 1HD-T with upgraded exhaust (with a huge power increase) is that fuel economy is not significantly better or worse, although as Wayne says, once you have the power, you use it, so that may have some impact. But overall it looks as if the fuel consumption is about the same. I do see a possibility that under ideal circumstances it could be quite a bit better (cruising at approx. 60-80 kph under partial boost on flat ground).

07-02-07, 12:35 AM	#15
Martin White IH8MUD Lifer Join Date: Mar 2006 Location: Abbotsford, B.C. Posts: 1,095	For what it's worth, my preliminary data on my 1HD-T with upgraded exhaust (with a huge power increase) is that fuel economy is not significantly better or worse, although as Wayne says, once you have the power, you use it, so that may have some impact. But overall it looks as if the fuel consumption is about the same. I do see a possibility that under ideal circumstances it could be quite a bit better (cruising at approx. 60-80 kph under partial boost on flat ground). __________________ 90 VX Ltd, HDJ81 RHD, 1HD-T 4.2l turbodiesel, auto, BFG 285-75-16 AT's, 3" lift, 15mm spacers all round, OME heavy / medium springs, triple locked, JDM tube frt bumper, 3" mandrel bent exhaust, aeroturbine muffler, Safari Snorkel. SOLD - to backroads backpacker...