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blown boost controller

J

jeepin270

Well-known member
Has anybody else had one blow on them? Is it fixable or do I have to buy a new one? I have the inline boost controller that comes with Silbers kit.
 
Cranking up the mtn and it just fell on its face, leaned out whenevr the boost came on. Brought it home and did a pressure test and air is blowing out the bottom of the controller. Turbo has been a big disappointment for me.
 
Arent the boost controller supposed to bleed out pressure from one side?

I might be off here, so please correct me if im wrong.
 
When I pressurize it, it the boost gauge will only come up to 5psi an air is jus blowin out thecontroller
 
I had mine go out you have to send it to justin or dobeck and for a few dollars they will repair it or if it is still under warranty they will take care of it.
 
man are you talking about the boost controller or the fuel box with the boost reference line? show a pic of what you are talking about somebody will probably see that something silly like something loose is causing your problem...
 
If it is the EFI box or Dobeck box leaking then that is a repair situation but for the in line boost controller I would go to the EBC no turning knobs or anything the new system is boost based. Works on any turbo kit hundreds have been sent out this year without issue even have a few running on watercrafts and drift cars and such. I used to run the inline controllers but now I would never go back.






The 2010 EBC is a boosted based program what this means is you enter in 8.5 or say 7.3lbs and it will match this target boost. It will also keep it at this level all day long at 1500ft or if you climb to 12000ft. It does not loose or gain boost.

ALT comp
Now for this year it is a simple 3 settings OFF ON or x2

When you turn it on if say you start at the truck at 3000ft your atmospheric psi is 13.2 you set your boost at 7psi. Ok now your climb the mountain now you are at 8500ft or 10.7 atmospheric psi so you just lost 2.5 PSI. That's allot of HP so the EBC simply adds that 2.5psi lost back into the boost so you keep close to the same HP levels as possible. Same when you go back down the mountain it lowers the boost back down to 7psi when you get back to the truck.

There is also a x2 setting but mostly is geared for the high boost Yamaha or 2stroke guys for every .1psi of atmospheric psi lost it gains .2 psi of boost so your boost ramps up very fast.


PTP button.

I use this all the time on my sleds I set the boost at 8lbs and add 2lbs on the button or sometimes 4 on the button wile I use for pulling a quick shoot or right before you get stuck you can use it to pull out or the best results are when you are racing another turbo just hit the button and walk on past them.

It also shows your current elevation but most sleds now days have this option in the OEM gauge. Also this year the screen stays clean from snow.

Allot more to come down the road as well and for peace of mind if the system were to fail it goes into low boost mode so if your actuator is set at 7lbs it would then go to the lowest boost possible.
 
Check your line to your attitude box if the line is good not pinched or leaking then more in likely the sensor in the attitude box that senses boost is bad. The boost adjuster wont make you go lean if you were running fine before then this happened that is more an likely your problem!
 
Check your line to your attitude box if the line is good not pinched or leaking then more in likely the sensor in the attitude box that senses boost is bad. The boost adjuster wont make you go lean if you were running fine before then this happened that is more an likely your problem!

Right, It shouldn't go lean if your boost controller is loosing pressure. You should be running higher boost though since it's not building the pressure to open your wastegate. Sounds like you just lost an o-ring or something in your in-line controller though if you can feel the air leaking.
Your fuel controller is getting the same info the boost gauge is so it should be fueling correctly (or very close) no matter what because it adds fuel per pound of boost. If it's running lean like you say, you need to check your boost line to your fuel controller too. It might have a crack in it or be pinched.
 
I figured out that my boost controller was hooked up backwards. I fixed that, took it out an it isn't getting fuel when boost comes on. I maxed out the grn blue light, no differance. I chked whole system for leaked, I gotta a small leak in the middle of my y pipe. Pulled powervalves found a small hole in one of the boots. Chked everything all the way to the reeds, found nothing wrong. I doubt I will get much advice but I gonna post it anyways.
 
Like I posted before send your box in. Is it gen 3.0? If so you need to go to the 3.2 it will make a night an day diffrence the 3.o box was crap I fought it for a year and lost a motor over it! If you have the 3.2 box it might not of took the programing or needs to be reprogramed!
 
You need to post more info.... is it a 2011 Pro or a 2010 or earlier model? When did it start happening? Who did the install? Are you running a AFR gauge? It is highly unlikely that your boost controller is "blown". If it is a Pro kit, you are running the V3.5 Dobeck controller. If you have checked for all leaks and have none, check your boost reference line and make sure it doesn't have any moisture or debris clogging the line. If you have done these things and the AFR goes lean when boost comes on it means you more than likely have a bad pressure sensor in your V3.5 box due to having moisture in your reference line at some point. You will need to send in your box and have it repaired.

It's fairly obvious to me that you have a very limited knowledge of two stroke turbo kits, how they work, and how to tune them. From your previous bashing of Justin and his kit, I take it you are finding this out the hard way. I am in no way an expert and am a novice at this whole thing myself, but I sure as heck wouldn't blame someone else for my lack of experience. The good news is you are gaining experience in spades right now. Good luck with your kit!
 
Make sure the secondary injectors are powered up. we had a wire break casuing the exact same issue. then next ride our box **** the bed. Luckily we had a spare and rode the rest of the weekend. Gonna see if we can make 2 days consecutive on this box.
 
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