I'm shopping for a 2000-03 150, seven lug. I have found that many of them are bi-fuel CNG/gasoline. My question is does anyone have any knowledge of after market tuners-Jet, SCT etc. that can program for CNG? I know CNG has very high octane (130) I think I read somewhere, but low volumetric efficiency since it isn't as dense as gasoline. Just curious to know if anyone has any experience with tuning for CNG, and, if so, what are the results, constraints etc.

 

I would try asking here Alternative Fuels, Hybrids & Mileage - Ford Truck Enthusiasts Forums they maybe able to help more.

That said I would think that a good tuning shop would be able to experiment to some degree and come out with a custom CNG tune.

 

CNG is troublesome at best. I would recommend not messing with it, there is almost nothing you can do to improve on the stock tune, almost anything you will do will have horrible consequences.