Hi
I had a Dtec fail after very little use,it is in my tow truck which dosn't get used very much,probley less than 2000 miles.It was mounted on a remote heat sink.Looking back i believ that it had issues right out of the box.
Stanadyne had plenty of time to build a better PMD,but never bothered till a fairly reliable aftermarket one was avalible.
If you have a EFI pump,keep a spare PMD with you at all times.I'v only had my EFI truck for a little over a year and had trouble with both the stanadyne and the aftermaket PMD.
Take your chances with either,the time will come that you will have to replace it.
Thomas
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews