I work on & drive both IDI & Powerstroke & as cool as it would be to make a highly modded IDI I don't see it happening. Could you get a reliable IDI to make mid 20lbs of boost everyday & still start without the use of half a can of either? I think the IDI is better off left mostly stock, if you want a go fast Diesel get something that was made to take a turbo. I don't mean the factory 93-94 IDIs either. I mean when the thing was sitting on the drawing board & they made it turboed from the get go. Like a Cummins/Powerstroke/or even a Dmax, anyone of them with a few mods will be reliable & go quicker than most all of the IDIs out there.
If you accept the IDI for what it is stock then it's a good engine & will last along time with the right care. Slap a turbo on there & the reliability starts to go down. To me & I've driven the N/A & turboed ones & to me the turbo isn't worth the extra $2k for the amout of preformance level that you get out of it.......
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