600 h.p. , 1000 f.p.t. , 30 m.p.g. Cummins

[PDP Shane]

I think stacks look good if the truck is set up for them . A a small lift , taller , wider tires . Prime example - Scott Zaffram's '03 dodge in Sept. edition of diesel power magazine . ( I even like the color.... silver . )

[duraraptor]

Shane, could I get your thoughts on the Quadzilla products.  I am so confused.

[2fun]

How is it that you are able to get more MPG while increasing the power and torque so much???

I guess I have been sitting in the back of class too long!! LOL!!

[PDP Shane]

the quadzilla module w/ the monitor is a very good choice in programmers . I havent heard anything negative about them at all . On top of that you also save yourself a couple hundred dollars and still get all the safty features of an edge product ( the monitor is bigger too ) . As for 2funs question , simply put , you have to think of an engine as a air pump , the more air you can get to go through your motor , the more power your going to create . Anytime you can help the motor work easier ( by adding an air filter , exaust , ect. ) your going to gain h.p. , and beings that the motor isnt working as hard ( because you helped it relax a little ) , your not using as much fuel .

[duraraptor]

Thank You Shane, it is so cool to have an expert iin the club.  The reason I asked was because that is the one the local dealers are pushing right now.  I will give you a call when ready to purchase one.

[2fun]

the quadzilla module w/ the monitor is a very good choice in programmers . I havent heard anything negative about them at all . On top of that you also save yourself a couple hundred dollars and still get all the safty features of an edge product ( the monitor is bigger too ) . As for 2funs question , simply put , you have to think of an engine as a air pump , the more air you can get to go through your motor , the more power your going to create . Anytime you can help the motor work easier ( by adding an air filter , exaust , ect. ) your going to gain h.p. , and beings that the motor isnt working as hard ( because you helped it relax a little ) , your not using as much fuel .

I understand about more air = more power, but I thought that there was always an air to fuel ratio that had to be maintained???  In other words, if you add more air, don't you also have to add more fuel??  Otherwise you'll be running lean correct???   If you are adding more fuel along with the air, wouldn't that work against fuel economy??

I have jetted carburators for many years, and I agree adding more air adds more power as long as you are adding the extra fuel to preserve the air to fuel ratio.  However, the bikes/quads have always lost some of their MPG because of this.

I still am not understanding how adding more air is going to help unless the engine is starving for air in the first place??? (IE it is running too rich in stock condition)

[Dune Dude]

2fun,

Its hard to compare ATV/bikes to cars and trucks in regards to mpg.  ATV's are usually run close to WOT (wide open throttle) either for long periods of time or from partial throttle to WOT and back hundreds of times during a ride.   Cars and trucks generally see less extremes in throttle position because of law enforced limits.
When you rejet the ATV to compensate for increased air flow in and out of the engine you are also, increasing its power.  The power is translated into faster top speeds and quicker take-offs.  (Which, of couse, we would do repeatedly to satisfy the beast inside us.)  This will cause the ATV to use more fuel than before.
In cars and trucks we usually don't get the same chance to bury the throttle for long periods or smoke the tires at every intersection.  The more power the vehicle makes, the less energy (fuel) it needs to perform the same amount of work as before.  (assuming sane driving habits)

[PDP Shane]

You are also talking about the difference between a carburator and fuel injection . Plus the difference between a 300 lb. bike and a 7,000 lb truck . The trucks fuel delivery system is not as touchy as that one a bike . You can get away with putting a air filter system , exaust , and even a power programmer on a truck without having to change injectors , because the fuel injection system will automaticaly add more fuel as it is needed . However , if you decide to just add injectors , you can over fuel the motor , making it hot , and run the risk of over spooling the turbo and blowing up the compressor wheel . If you decide to just put a turbo on the rig , sure , you'll get a big jump in power , and you should be o.k. driving down the road , but you will not be getting the performance and mileage unless you add the injectors . My point being , everything has a balance . If you want a little more power , start w/ the less expensive parts first ( air , exaust , and progrgammer ) . If you decide you want more , then you can start forkin' out the the higher dollar amounts .