I searched and found many threads on this subject, and read them all. Most of them were a few years old though. So what's the latest way to go if I'm going to do this? I have seen a few company's that make the conversion kit for late model fords, but they are not cheap, costing more than $400. If I'm gaining 2 mpg's, this just doesn't do it for me.

I generally drive around 15000 miles per year. If my truck gets 16 mpg, then I buy 937.5 gallons of gas per year, at lets say $2.40 a gallon, for a total of $2250. Now if my truck gets 18 mpg, then I use 833 gallons, for a total cost of $2000. A cost savings of $250 per year.

I could see spending $200 or less on this conversion to make it worthwhile. What's the best fan to get with the controller that isn't having any issues?

 

Anyone know if Troyer Performance is still in business? THey had the best priced retail kit on the market but not the best business sense.

 

There's no way in hell I'd buy anything aftermarket to improve mileage with these trucks... Besides nothing beats good maintenance and sensor updates when warranted.

E-fans are good for one important reason with these trucks and that's to get rid of clutch fan drag. One of the BEST bolt on mods for these engines. You might free up as as 15 HP. But it's a 15 hp you'll definitely notice right off the line and specially towing.

Sure, it will HELP with MPG's. Nothing noticeable by itself. In fact there isn't just one thing. 15-16 on the highway, is about the HONEST max your going to achieve consistently with an engine that's been taken care of.

Never mod for mpgs, - try to find one of those old rabbit diesels on craigs list if you want mpgs. Make sure you stock up on rubber bands.

BTW, - The Troyer kits are good and pricey. They use to have a problem with their controllers. I'm sure that's been worked out by now. Personally, I liked the old Mark VIII kits w/a GOOD spal controller. But the Mark VIII took some amps to get going. Now a days, more kits have been put together and offered to the public. Some good, some most likley bad. I'd have to research more to catch up, but hell, I don't want to take all that fun away from anyone.

 

I'm using the flexalite kit. I can right 2 mpg isnt going to happen. I got around 1 mpg. The differnce in operating temp while towing was dramatic. Along with the added engine response.

 

The BEST way has not changed.

Motorcraft RF-269 and either a Painless F5 or DCC FK-Series constant-temperature controller.

Nothing else comes close.

MGD

 

I am running dual range rover fans and they work perfect. With single one one temp wont very over 2-4 degree idling.

 

I beg to differ my dual fan setup will cool alot better than any single fan setup.

 

The Motorcraft RF-269 is a dual fan setup and blows the doors off most any aftermarket setup.

 

After researching it. It wont have a leg to stand on witbh most of the Higher end dual fan setups. RF269 is rated @ 5300CFM. Just one of my Flex-a-lite moves 4500cfm.

 

Any update? Looking at getting some for my 04 have a heavy duty fan clutch and it's loud as all get out. Trying to decide on a good kit