08 xb12r Won't run, backfires through intake. Help please

[Silverrider]

Silverriders Youtube link (while hilarious) is absolutely true.

Even after years of auto tech training, at my first real job I was lucky enough taught by the best diagnosis professional I have ever met. His technique is the same one I preach here, over and over and over again. It works. It will always work. It will always be the fastest and least expensive way to fix anything mechanical.

You can get lucky by bouncing around and might find the problem, but even the next problem you find... you will need to be lucky again to find it. You haven't learned a thing.

If you systematically start at one end and work your way diligently to the other end, you will always find the problem. And paraphrased from Robert Pirsig (God rest) 'If the answer to your question is indeterminate, you must broaden the scope of the question'.

Fuel, spark (timing), air. Thats what it needs to run. Pick a system, start at one end and go to the other end.

Those items Cooter mentioned are the basics to a running engine. :up:

 

[34nineteen]

I'd say we've all given some great contributions on how to get the OP on a path of getting his bike up and running.

Like lowkey mentioned, we probably need to sit back and see what he comes back with.

 

[BuellyBagger]

alright 1550 and thats my final offer! lol just kidding. lots of good actually helpful(unlike mine) posts here, hopefully you're headed towards a cure

 

[user_deleted]

retreat to your initiating post to commence this thread.
"moving maps in and out" "tried diagnostics"....etc etc
that right there scares me.
this might fall on deaf ears but before you start ripping and tearing.....replacing parts....checking pressures....on and on....check your original work. clearly you were accessing your ecm which always raises red flags with me.
i mention this as long-time board member lowkey, who is not only an excellent mechanic but has a significant background in computers and programming, had a similar recent situation that plagued him and stumped not only he but other board members. as i recall it was a "corrupt" ecm eeprom program.
perhaps seek out assistance on here from the ecm gurus. i'm NOT one of them.

 

[rchuff]

Here is a little advice, If you really don't know what you are doing then take the bike to someone that does before you destroy it. And I wouldn't listen to Lowkey!

 

[lowkey]

retreat to your initiating post to commence this thread.
"moving maps in and out" "tried diagnostics"....etc etc

i mention this as long-time board member lowkey, who is not only an excellent mechanic but has a significant background in computers and programming, had a similar recent situation that plagued him and stumped not only he but other board members. as i recall it was a "corrupt" ecm eeprom program.
perhaps seek out assistance on here from the ecm gurus. i'm NOT one of them.

Good catch Lunatic! There are so many of these non-start threads going around right now I didn't catch that he was in the ECU. It is very likely the data connection was momentarily lost while pushing the new maps to the ECU (happened to me), all you need to do is flash your known good map in this case. I'm not familiar with changing maps with ECMDroid so no idea if there is verification of completion or not.

Here is a little advice, If you really don't know what you are doing then take the bike to someone that does before you destroy it. And I wouldn't listen to Lowkey!

Why?

 

[Silverrider]

Changing maps in ECMDroid may be over the owners skill level ? ( not to be rude at all) , Might be best at this time to pick up another one unaltered or have it reprogrammed by a experienced company/person. I am just throwing it out there.

 

[lowkey]

Changing maps in ECMDroid may be over the owners skill level ? ( not to be rude at all) , Might be best at this time to pick up another one unaltered or have it reprogrammed by a experienced company/person. I am just throwing it out there.

The claim from users of ECMDroid is that the program is "fool proof" in that you can't flash an incompatible map to the ECU, that software only works through bluetooth and not a cable, a drop in connection would result in corrupt EEPROM. No harm in trying to flash back the complete known good EEPROM.

OP if you need an EEPROM for your bike PM me and I'll email it to you, I'm pretty sure I have the 08 EEPROM saved.

 

[Silverrider]

The claim from users of ECMDroid is that the program is "fool proof" in that you can't flash an incompatible map to the ECU, that software only works through bluetooth and not a cable, a drop in connection would result in corrupt EEPROM. No harm in trying to flash back the complete known good EEPROM.

OP if you need an EEPROM for your bike PM me and I'll email it to you, I'm pretty sure I have the 08 EEPROM saved.

http://buellmods.com/

 

[lowkey]

http://buellmods.com/

I'm only seeing up to 07 EEPROM's there.

 

[Silverrider]

I'm only seeing up to 07 EEPROM's there.

You are correct, My bad. :black_eyed:

 

[Cooter]

Try Buelltooth.com? I know they are trying to populate the maps as best as they can. Theres links to ECMSpy, ECMDroid, Tunerpro, how to's, and everything.

Edit: I checked and heres a bunch of BUE2D maps...
http://www.buelltooth.com/maps.html

 

[Silverrider]

Try Buelltooth.com? I know they are trying to populate the maps as best as they can. Theres links to ECMSpy, ECMDroid, Tunerpro, how to's, and everything.

Edit: I checked and heres a bunch of BUE2D maps...
http://www.buelltooth.com/maps.html

Good find Cooter,! :up:

 

[lowkey]

Try Buelltooth.com? I know they are trying to populate the maps as best as they can. Theres links to ECMSpy, ECMDroid, Tunerpro, how to's, and everything.

Edit: I checked and heres a bunch of BUE2D maps...
http://www.buelltooth.com/maps.html

I have the stock one for him, it's just a PM away. Frimware version BUEOD0CB

Cooter, don't you have an 08STT? You should have an EEPROM backup too.

 

[Cooter]

Ya know!? Duh! I totally do! I have a bunch of BUE2D actually... XB, 1125...

What a brain fart I'm old:distracted: and I drink a lot :very_drunk: haha

When I get home, I'll grab them off all off the tablet and at least get them on my e-mail so I can share. Thanks for the reminder lowkey

 

[njloco]

Should I start a new post or just continue here with my questions about the above ?

 

[lowkey]

Should I start a new post or just continue here with my questions about the above ?

What questions do you have? I don't see any previous post, but best to start a new thread.

 

[Born2Ride]

Im having same issue with mine,bike will hiccup and studder while idling..Try to give it a little throttle and it will hiccup and backfire thru the air box..it all started when I put a K&N filter and exhaust on the bike,at same time I downloaded ecmdroid but have not figured out how to use it to upload a race map. All I did was use it to turn off the exhaust valve actuator,but ever sense ive had this issue. Air box base,velocity stack,etc is all installed correctly and sealed. Will hiccup and stumble when you go to take off,but will run fine once it gets moving..Seems to not do it as bad once it gets hot.

 

[lowkey]

Born2Ride, what year is your bike? First check trouble codes with ECMDroid. Next report back what value your TPS is reading with the bike off and snap the throttle closed a couple times. As for changing the exhaust did you remove the O2 from the header? If yes make sure it is seated/tight and plug is fully seated (right on top of rear cylinder under air box bottom)and that the header gaskets aren't leaking at all. As for the K&N filter did you accidentally forget to plug the AIT sensor back in? Double check it is fully seated/connected. If you removed the intake manifold, make sure! sure! sure! the seals were seated right. Also if manifold was removed you may have put the injectors/plug clips on the wrong cylinder (they should be labeled and color coded green/white).

If all that checks out go back to post 8 on page 1 and follow the steps/posts after that I laid out.

EDIT:

Born2Ride best to just start a new post so this one doesn't get to far off from helping the OP. Try and include as much info right off in the first post so we can get you back and running ASAP.

 

[Born2Ride]

Born2Ride, what year is your bike? First check trouble codes with ECMDroid. Next report back what value your TPS is reading with the bike off and snap the throttle closed a couple times. As for changing the exhaust did you remove the O2 from the header? If yes make sure it is seated/tight and plug is fully seated (right on top of rear cylinder under air box bottom)and that the header gaskets aren't leaking at all. As for the K&N filter did you accidentally forget to plug the AIT sensor back in? Double check it is fully seated/connected. If you removed the intake manifold, make sure! sure! sure! the seals were seated right.
If all that checks out go back to post 8 on page 1 and follow the steps/posts after that I laid out.

Bike is a 2007 XB12,no trouble codes,O2 was never removed only did a slip on muffler,intake mani was not removed,AIT sensor is plugged in tight,I did a tps reset and then set the idle back to 1050rpm. I will double check the tps readings. I read to set the afv to 100% so I did that,it was at 125% when I went to change it. Seemed to hiccup a little worse once I set it to 100%.