2008 m1000 bogs/dies after letting off wot

[blurredelevens]

The intake isn't the problem,
The y and can combo is. I have tested it all and I could burn down a y-can combo at my elevation in probably 30 seconds or less. I had to raise the fuel pressure from 43psi to 49psi to keep the egts in the safe zone. With that extra fuel I also gained a ton of power. The intake only makes it worse but is not the problem and more likely to cause a low in bog than anything.
Without increasing the fuel pressure and using a bd box I added almost as much fuel as slp recommends to add with there pipe to get the power out of it and egts where I want.

I would be looking at the pistons to see if you ruined them yet.

What is happening is its running so lean and getting so hot when you let of and the ecu runs the low throttle part of the mapping theres not enough fuel and the heat vaporizes the fuel. If you havent f cked it up yet your lucky and better get some fuel to that thing.

I'm still having this issue, and I think you're right. The plugs show that it is definitely lean. Do you suggest a certain controller? How about mapping? What numbers should I take it to? I'm thinking I need a temp sensor of some sort too so I don't burn it down. Thanks!

 

[blurredelevens]

I would be concerned about no fuel control with that set-up. I have heads and y pipe with SLP intake...but that intake doesn't really pull more air. I added a decent amount of fuel to make it happy on top. The backfire is just a really hot pipe and unburnt fuel...makes it light up...been there before. But, I'm running good and clean on the low end. Tough to tell if it's lean or rich unless you have a controller or fuel pressure regulator to play with. I'm definitely guessing it's a fuel issue right now but am not sure which way to go. I don't know if guys with this intake have had to add gas. It might be worth the $$$ to add a controller. I use a Dobeck TFI...works great. It's simple but makes sure I have enough gas everywhere. Very simple but no ability to subtract fuel. For $200 it's decent insurance...but I'd hate to lead you down this road of you are rich...wouldn't help.
http://stores.ebay.com/ATV-Galaxy/Dobeck-EFI-TFI-Controllers-/_i.html?_nkw=arctic+cat&_fsub=7054559


See this thread...polarisfornow had to add fuel with this intake...you might be lean.

http://www.snowestonline.com/forum/showthread.php?t=296616&highlight=bdx+intake

Thank you as well! I think this is the issue as it is lean....are these controllers like chips on your truck? You just hook it up for programming?

 

[Sneddonrider]

The throttle safety switch is connected to the throttle bodies and the thumb throttle flipper. If there is a little slack in the throttle cable it will make the computer think the throttle cable is stuck and will kill the motor.

This was happening on my 09 m1000 and if you look at the throllte thumb flipper you will seee the pin it pivots on moves, when there is not enough pressure on it it won't let the motor rev up and can cause problems when blipping the throttle.

I tightened the throttle cable a tiny bit 1/4 turn on the adjustment in between the throttle bodies and never had a bogging problem again. I think lots of people think thier tps switch is faulty when it is just out of adjustment. If you tighten the throttle cable too much it will rev up the engine. It just needs the slack taken out of it. A slack cable makes the ecm think there is a frozen throttle cable when you are bliping it. Hope this makes sense.

 

[backcountryislife]

Thank you as well! I think this is the issue as it is lean....are these controllers like chips on your truck? You just hook it up for programming?

It's similar, not a straight "chip" like a truck, it's controllable.

This setup will be very easy to tune, it would take about 10 min with an EGT, little more without.

I've run 07, 08, and 09 with that setup without issues, by running higher fuel pressure, you mgiht want to just get a fuel reg. (I can help you get that stuff if you want, for cheap)