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Discussion Starter · #1 ·
I have a 2008 trx 700xx and I just put on a motoworks pipe and a fmf efi unit. I went cruising up the mountain and was fine but when I got to the trails and rode hard and slowed down for somethings and would down shift and get back on it it would sputter and cut off. Only happened 3 times but I didn't adjust the unit so not sure if its off or what. I was thinking it was dumping fuel in the motor and when I grabbed throttle it would do it but other than that it ran like very nice. Then heading down the mountain it was fine also. If anyone has any ideas I would love to hear them and maybe settings if anyone has had the same issue. I do plan to race a little too and don't need it dying on me.
 

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join the crowd buddy mine does the same thing to i think it has something do with the way you blip the throttle,i changed my ridin style i mean the way i come into turns and hills ect, and it seems to help a little but mine will kinda cough and sputter and want to stall i dont know except it has put me in a couple of dangerous situations while riding especially if it stalls when somebody is on your ass:xx:
 

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Discussion Starter · #3 ·
Yeah and that's what I'm worried about. I don't wana have to worry about casing it or in a bad spot. I got some numbers for the efi unit and ima try them out and it that doesn't work, to the shop it goes for a dyno tune.
 

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i tried leaning my efi first 3 modes .5 and richen it .5 on first 3 modes it ran the same both ways,nobody has a dyno near me or i would of already had it on the dyno, ill have to take a small vacation just to have mine tuned!:atv::xx:
 

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Mine did this too, I called EHS and he told me to richen up the first mode by 1, and I believe the 4th mode (that controls when the mode 1 starts working at the bottom) was moved down. I believe the way he explained it, was that the idle isn't affected by the controller, unless you take the 4th mode (which is slightly off idle) and move it down so the controller starts adding fuel earlier.
 

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Discussion Starter · #6 ·
I took it out and leaned out a couple and richened a couple not by much .5 was all i did and the bike runs great now.
 

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mine does the same thing. when I am riding it is fine but as soon as I jam on the throttle it just starts to sputter and lose power.
I have a DMC EFI and DMC comp 4 exhaust and velocity air filter and I don't know if it is the settings or something. but it is very annoying because I don't know how to fix it. like I don't know if I should set it to the original settings or take it to a shop and have them look at it.
and I am just not sure what to do with it because as soon as I jam on the throttle it basically just dies and I have replaced the injector and fuel filter and it still does the same thing.
 
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