out with a bd- pro

[fredw]

out yesterday with a pro with the new bd turbo, he was having some issue with det of the start, gave him a few gallons of race and it was better he said, he was running 9 lbs on pump 94octane and never had issues before... but it was -20 when we left the trucks

he said the new electronics should compensate for temp and boost and fuel, but it was having some issues with the tps, sled would spool fine, then the next time have a dead spot, after a few minutes of hard riding, then it would be fine, till it was shut off again

i drove it a few times and its comparsion to the etec turbo, felt similar once spooled, but the etec would spool considerable quicker and smother, and it was running 6lbs,

my biggest issue was the sterring on the pro, seamed to lock my arms up, will ride with him once it gets running better

 

[SWEETXPBEATCH]

Thanks for the feedback Fred

Was that a non-intercooled, pump gas turbo?
Even though I have left my BB XP, I am very pleased with the Pro, in general.
I too am having some issues with DET, Idle issues. Hoping my TPS adjustments will correct this. Will know Saturday.

 

[fredw]

no it had the intercooler he said

i had my 880xp with the three inch 162 their as well, and we climbed a few hills together, jumping on his and then the 880 they felt dam similar, he might of had a edge, but close

really starting to see a future in the two stoke turbos, and what i seen so far with the etec turbo, it looks sweet, another level better than the 880

 

[lurker]

Fred I see you on the doodoo side as well as here bitching about the Polaris steering which I find strange, don't see the same comments from others. Is it possibly that you get off a machine that you have adjusted to your likeing and then jumped on a Pro set up for someone else? Is your build normal or are you an odd shape? Things to consider...

 

[INDEEP]

Honest question here. Why don't all these guys hitting det simply turn down the boost? Seems like if my sled ran better at 6lbs. thats what I'd run till I had more octane. And if det and hitting the rev limiter acts the same on a Pro why not carry some weight that are a few grams heavier in your pack? Or again turn down the boost till ya had your issues solved.

 

[m1kflyingtiger]

Honest question here. Why don't all these guys hitting det simply turn down the boost? Seems like if my sled ran better at 6lbs. thats what I'd run till I had more octane. And if det and hitting the rev limiter acts the same on a Pro why not carry some weight that are a few grams heavier in your pack? Or again turn down the boost till ya had your issues solved.

The det light can come on from to little fuel volume, over reving excessively, a lean condition, lose spark plugs, not enough octane for boost/too much boost for octane, plugged fuel filter, or the motor tourqing and contacting the chassis. If our boost seems in line with your fuel then there might be other issues.

 

[INDEEP]

The det light can come on from to little fuel volume, over reving excessively, a lean condition, lose spark plugs, not enough octane for boost/too much boost for octane, plugged fuel filter, or the motor tourqing and contacting the chassis. If our boost seems in line with your fuel then there might be other issues.

Most of those things can be eliminated by turning down boost though. You better not have loose plugs if these det sensors are as sensitive as they say. Fuel filter seems unlikely on a new sled and motor contact should be triple checked during the install.

 

[fredw]

as for boost, i asked him more than once, are you sure you can run that much boost with pump fuel, i know he said he was going to turn it down, and maybe thats when it started to run with out det sensor going off all the time

he said he had five days riding prior and never had anything wrong, but it was never that cold

as for the tps issue it needed some calibration or something, throttle acted funny

as for riding skill i have 17 days riding in the season and have been riding for 27 years in the mountains, 210lbs, but have a real hard time with the pro sterring

i know our next time out, he will get it together, he was disapointed this last time in the kit doing the strange problems

Most of those things can be eliminated by turning down boost though. You better not have loose plugs if these det sensors are as sensitive as they say. Fuel filter seems unlikely on a new sled and motor contact should be triple checked during the install.

 

[sledstew]

Honest question here. Why don't all these guys hitting det simply turn down the boost? Seems like if my sled ran better at 6lbs. thats what I'd run till I had more octane. And if det and hitting the rev limiter acts the same on a Pro why not carry some weight that are a few grams heavier in your pack? Or again turn down the boost till ya had your issues solved.

That is not a cure all for this issue, the heat produced by the turbo is creating alot of the problems. It doesnt help when you pull intake air right next to the exhaust outlet. Compression is another issue also,especially when you cannot control the timing real well.

 

[SWEETXPBEATCH]

That was my first inclination

Turned down the EBC to 2.0 and still happened. It's something else.

Most of those things can be eliminated by turning down boost though. You better not have loose plugs if these det sensors are as sensitive as they say. Fuel filter seems unlikely on a new sled and motor contact should be triple checked during the install.

 

[SWEETXPBEATCH]

I have the cold air intake, I don't believe that will be it either

I am hopeful that this is simply a case of a poorly adjusted TPS. We'll see tomorrow.

That is not a cure all for this issue, the heat produced by the turbo is creating alot of the problems. It doesnt help when you pull intake air right next to the exhaust outlet. Compression is another issue also,especially when you cannot control the timing real well.

 

[dmkhnr]

9# of boost with the intercooled kit should be 100% av gas, and you can ween it off once you know it runs turnkey at this level.
There are several factors that would cause it to det at 9#
not enough octane
is he running the stock 70 weights, these are too light for 10k elev and 9# and it will slip into det when the track unloads.
What helix, using a 60* helix will work with the 70# weights, the bd 48 finish is too shallow and will cause it to overrev and det when the track unloads.
Who installed the kit, it should be gone over with a fine tooth comb as this kit cannot be thrown in and expected to just run like a top. YOU NEED TO BE METICULOUS with the install.

I'm not sure who or where the install was done, or who or where your freind is getting his octane/boost info. If it's from a dealer, I would throw it all out the window and do my own research (instance: you have dealers here in this very turbo section telling people that you can run STRAIGHT 91 OCTANE fuel at 7# 5k elevation) a flock of guys believing this, and then threads of guys complaining about det, broken piston skirts, bad A/F readings.
Have your buddy jump on here for advice, or recommend he bring it to somebody in his area that knows how to tune a pro turbo (preferably somebody who has done the bd kit) If the install is correct, then the tuning fault can be found in a matter of minutes.

 

[dmkhnr]

as for boost, i asked him more than once, are you sure you can run that much boost with pump fuel, i know he said he was going to turn it down, and maybe thats when it started to run with out det sensor going off all the time

he said he had five days riding prior and never had anything wrong, but it was never that cold

as for the tps issue it needed some calibration or something, throttle acted funny

After reading this, the first thing I would do is check the reeds.

 

[fredw]

you could be onto something their, it had the odd time a weird idle, he mentioned it himself, mabe a broken or chiped reed pedal. i will tell him

he had a cold air intake sucking from the top shroud on both sides

thanks all

After reading this, the first thing I would do is check the reeds.

 

[revrider07]

This has been mentioned before but here it is spend 12000$ on sled 4-6 thousand on turbo and guys are to cheap to buy race gas. Then they complain that they dont work or burn down on cheap pump gas. I had 2 turbo's pump gas never worked for me. I am riding stock now but not for long it goes in cycles for me no mod then all out mod. The new improvements in technology will make turbos the new standard in mt riding its coming and I cannot wait. The more kits out the the faster it becomes standard from oem. Here is some info for thought gas changes temp siting on top of heat exchanger and sunoco is the only fuel I have found to stay the same run my old turbo. After set up very little change though the day. I have seen guys chasing problems with fuel heating up and they overlook this problem with pump gas because its always changing though the day.

 

[Ephratafarmer]

I know there's always a big debate on det and fuel, and what fuel to run. My 1 cents worth, run av-gas 100ll. Unless ya want high boost, at low-elevations. Its the most stable fuel there is and it just works. Always has and always will work, 104 oct all day every day, no storage problems like race gas and our pumpfuel today. I run it with no problems at all, I do add 64 oz of Schaefers Nutra additve/100 gallons, just for a little lube and extra water preventitive.

 

[dmkhnr]

you could be onto something their, it had the odd time a weird idle, he mentioned it himself, mabe a broken or chiped reed pedal. i will tell him

he had a cold air intake sucking from the top shroud on both sides

thanks all

Is his cia plumbed into his stock airbox, and is it just utilizing the 2 factory inlet screens? Without added inlet screens (SLP has a kit) he is starving the motor for air. You also have to gut the airbox.

 

[SWEETXPBEATCH]

Out with my non-Intercooled BD turbo today, flawless!

BD Turbo idle, DET, Over Revving issues were all gone today.
Dealer did a few things and replaced TPS.
I will get more info on Monday.