??? on DET

[beamslayer]

It ran good first part of the ride than on the way back off the mnt it started to show det and got hot so we burb it . it still went into det mode so I headed back up to see if it was elavation related it still went into det mode . Temps were good , it ran good but every once in awhile it would do it again . I checked rpm never went over 8100 .
I am breaking it in after the fix kit so I was't running too hard, I added 12 oz of oil to the tank before starting out,91 non eth ,13-1 pa head and hps can riding starts out at 3000 ft. and goes to 6000 ft give or take .
Any ideas ?

 

[richblazer]

I ran into the same problem today i see no has a answer for you have you come up with any thing? i think on thing that may help is put your stock can on the guy i bought the sled from said it did it to him a couple times but not as much with the stock can. My dealer said it could be bad gas also told me to flip my ethanol chip if that dose not work try higher octane fuel. Let me know if you find anything out

 

[beamslayer]

Do you have the fix kit in yours ? I thought about the switch but I was back to the truck by than .
I had no problems last yr with just the head and can .
Does anyone know what cause a sled to go into det code ?

 

[tinkerjohnson]

poor fuel quality can effect it as well as too lean of fuel mapping will also cause det problems maybe the fix kit made your fuel mapping a little on the lean side, if you had no problems before and you have it now mapping would be my guess eth resistor will richen up your mapping a little try that or you may need a fuel controller and add fuel on your own

 

[glassman]

Were you running the old gas in the tank? Do you know the quality of fuel you were buying. I bought premium at a station one time and pretty sure it was regular, as my DET sensor was going off all the time. That is why I bring a little race with me when I am unsure about the quality of fuel I am buying. A few litres and never worry about DET. Higher elevation definately requires less octane.

 

[snobyrd]

Like tinker said, lean condition will cause a det code, if the det sensor is like the cat sensor, it "listens" to wats going on inside the engine and I guess that a lean condition causes a audible noise. Kelsey himself told me that a lean condition will cause a det code.

 

[snobyrd]

Were you running the old gas in the tank? Do you know the quality of fuel you were buying. I bought premium at a station one time and pretty sure it was regular, as my DET sensor was going off all the time. That is why I bring a little race with me when I am unsure about the quality of fuel I am buying. A few litres and never worry about DET. Higher elevation definately requires less octane.

Glassman, if your running a stock engine, you should not be seeing a det code, I just went out for 5 days and I used 89 and no issues at 3-4500', my bud ran 87. These stock engines have got low compression, if I can run a 13.5 head on 91 that tells me that our stock 12 or wat ever it is don't need 91, it's just pol adding a big safety factor. On that same trip, a rider was usin strait av with a 13.1, totally unnecessary, he's hurting his performance instead of gaining, and his sled showed lack of performance in the steep and deep.
Maybe something was rattling and caused noise that set of your det sensor. Jmo

 

[beamslayer]

Had all new gas in it and I bought it where I always do .
Could all of this be due to a loose muff pot banking on the pipe next to the y pipe ?

 

[snobyrd]

Had all new gas in it and I bought it where I always do .
Could all of this be due to a loose muff pot banking on the pipe next to the y pipe ?

I would say yes, u could tap on the head with a screwdriver and get a det code. It's just a sensor that bolts onto the top of yer head, it's not internal, that's the way the cats r anyways, I haven't looked at the pol engine but I'm sure its the same. So a rattling muff pot might set it off.

 

[snobyrd]

I know on the cats, there's a torque spec for the sensor, u can make it tighter and u will get less det codes, it threads into the top of the head, with a wire comming of it, if pol is the same way than pol might have them set up very sensitive, but remember I'm referring to a cat..