FASS or Air Dog

[DMBrady]

Looking to add a new an air fuel separation system to my truck. Which system is the better of the two? Air Dog or FASS?

 

[HOBrian]

I brought the Air Dog, but they are both great fuel systems. The Air Dog right now is a WHOLE lot cheaper!!! What year truck do you have?Oo.

 

[DMBrady]

2007 Mega Cab 5. 9 CTD

 

[HOBrian]

Since you have a 2007 whether you get the AD100 or the AD150 you are going to have to drill a hole in your tank for a new 1/2 in draw tube. I would say get your hands on the AD150 flows more than the AD100 and it cost the same. There is a great writeup with pics over on DTR. the guys name is mark and his screen name is 53 willys. (His pics are the ones Charlie used in the updated instructions for the installation of the Air Dog)Oo.





AirDog 150 & tank vent mod install on a Megacab - Dodge Diesel - Diesel Truck Resource Forums

 

[AMcCormick]

A question on pump capacity, I've read that it is bad for a pump to be running well under capacity. Meaning that if you really only require 90gph and you run a pump that is rated at 150gph it is hard on the pump. Any thoughts on this?

 

[HOBrian]

The Air Dog and FASS both have regulators. This allows the pump to move lets say 100 gph if your truck only needs 80gph the rest is sent back to the tank. The pumps never slow down or speed up everything is taken care of by the regulator.