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dirtjunkie85

What Fuel controller is best???

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I have a 2008 KFX 450R and currantly have a lexx fuel controller but here the Dynatey is what most guys are running does anyone know if there is really a diffrence I know my lexx one was alot cheaper then the Dynatek?? Is it better to get one with or with out teh program to change the map?

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Dynatek makes about 90% of the fuel controllers on the market. One is not better than the other as long as they both do what it is suppose to. The perfect ratio is 13 parts air to 1 part fuel. One programmer is not going to put you at 13:1 better than the other. 13:1 is 13:1

It would be the same as saying DynoJet Jets are better then Keihin. Jets are jets.

Now which one is more reliable is another question.

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Just like bot said a controller is a controller. But the benefit of having one that's completely customizable is, if you have access to a dyno you can keep that 13:1 ratio more constant. And get every little bit of power out of your engine. Now depending on how often you change altitude affects what kind of controller you would want to get.

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I dont know about KFX's, but for the Raptor 700R's, the PCV is the best.

Please explain, other than adjustability, how the PCV is better than the 2 Brothers Juice Box or the Dobeck. They all keep the quad at the correct ratio as long as you use the mods that it is programmed for.

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There are more maps for more serious mods, such as a turbo, or N2o. From what I have read, there isnt enough adjustability on the Dobeck style controller.

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In my question. I said other than adjustability. If all you are doing is exhust and intake you don't need all the adjustability

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Yes, but if you have nitrous, porting, cam, and a built motor, you need that adjustablity. For just exhaust and intake, it would work fine.

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Yes, but if you have nitrous, porting, cam, and a built motor, you need that adjustablity. For just exhaust and intake, it would work fine.

LMAO, you are a retailers dream. :laugh:

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There are more maps for more serious mods, such as a turbo, or N2o. From what I have read, there isnt enough adjustability on the Dobeck style controller.

you're kinda correct but not. All the PCV does is with the piggy back system you can get for it you can do the autotune. which isn't really an auto tune at all its to set a trim program to run the main pcv to be leaner or richer. Which is why so many guys with the turbos and high mods like them cause they maintain that 13:1 but all it a PCV does is control the fuel mapping. You need another piggy back to adjust the timing if you're running a pcv or a programmable ecu like a procom. a Doebeck from what I've read is just another CDI box like you would put on a carb quad no adjustments just 2000 rpm higher rev limiter. As well as a PCV won't control nitrous thats usually controlled by a separate controller and thats the person with their hands on the bars pressing the button.

Edited by Jonny450R

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