i love this stuff. propane should be on the truck from the factory. i was a little scared at first but after cruseing around at hiway speed and getting 30+ mpg i am sold. hell one trip had the wind to my back and was reading mid to high 40s on mpg, take into acount the digital is about 10% off from calculated but before propane i was only avg. about 19mpg on the display.

 

I would like to know your mileage hand calculated. Then add in the cost of propane and see how much of savings it is Curious if the cost of the propane kind of wipes out the increase in mileage

 

Mid to high 40s on MPG ?? I wish i had a BS sign. LOL

 

This question has been asked before could you drill and tap the air intake horn for 1/8 NPT fitting? Pictures of set up would be great, this thread is the bomb...pun intended

 

I am going to have to try this on my old 6.9 . I don`t have a box , just the breather intake. I guess I could drill a hole in the lid right above the intake. I will pick up supplies this weekend. thanks

 

u could for the hobbs switch but u need to inject the propane in the airbox so the turbo vaporizes it.

 

I have a 7.3 ford with lp injection the guy i bought it from put it on there he made a homemade box for it and bolted the brakets that hold the tank through the box and he also found like a 40 or 45 gallon tank out of like an old camper and put that in there... i turn the switch on once the truck is warm and i leave it on until i shut the truck off.. if i turn it on when the truck is cold it idels rough but then if i flip the switch off then the idle returns to normal so i only run lp once the truck is up to operating temp.. i found i gain around 2-3 miles per gallon more when running with the lp and alot more power... great investment

 

does that system have some way to adjust the pressure to match fuel and boost? or is it set just high enough to run decent at idle?

 

Good writeup but i must add something about your choice of hose...

DO NOT USE HYDRAULIC HOSE!

You need to use a gas rated hose. Normal hydraulic hose will get destroyed fairly fast if using gas/air. What happens is the gas penetrates the inner liner, forms gas pockets in the brading/under the cover and eventually blisters the hose. Most, if not all hoses made for compressed air/gas actually have a bunch of little pinholes in the outer cover and a different inner liner to prevent this kind of thing.

YES, this will happen even at low pressures, we have used hydraulic hose on torches before (in a bind and thats all we had) and within days it was blistered.

Just a little safety tip for ya, would hate to see someones truck burn down just because of a simple misunderstanding about hoses!



Aeroquip trained and certified - if you dont believe me, look it up

 

i thought i changed that in the write up but apparently i didnt. but for the record i did not use hydraulic hose, i just went to the local welding supply store and had em cut me off a piece of acetylene hose.

like you said, be sure you use a hose rated for gas, in addition be sure its rated for a FUEL gas like acetylene or whatever