2008 XB12R Rebuild... Won't Start/Backfire

[ich]

then it's not the firmware. just eeprom data.

 

[Theycallmecrash]

Ich shut up. Youre just trolling.

Anyways going to xoptiinside.com look up your ecm, it says 09-10 models.
Makes me wonder if somethig is different where connecting to an 08 model bike some reason it wouldnt run. (Wiring harness?) As far as i know they are the same.

 

[ich]

stop using wrong terms, i will stop trolling. 10 models wont run with 08/09 eprom data.

 

[Theycallmecrash]

Again completely unhelpful.

Koop you have anymore bakground on the motorcycle? Like why the PO started on this build and didnt finish or how far along you came into it? Why was it downed in the first place? Just to put a small big bore in it?

 

[rclark90]

I have the almost exact same problem with my bike. I am about to post my own request for help.

I had my 2004 Buell engine replaced with a new 1250cc with RP610 cams all from Revolution performance. It all got put together and the engine just keeps backfiring and or other problems. Its getting a little aggravating since the mechanic is charging me troubleshooting time.

 

[Koop]

Koop you have anymore bakground on the motorcycle? Like why the PO started on this build and didnt finish or how far along you came into it? Why was it downed in the first place? Just to put a small big bore in it?

The guy I bought the bike from had decided to start going with some upgrades... cams, big bore kit, lifters, valve springs, pistons, wideband O2, etc. He got about 90% done, or so he said, and didn't want to spend the money to put the red shift cams in. That was where he left off. I then got the bike, tore it down and lined up the cams to get it running. So now I'm up in arms about where to go next. I'm thinking to replace all of the sensors relating to the timing and starting there. Any other ideas?

 

[Theycallmecrash]

The sensors themselves wouldnt cause incorrect timing.

Thinking about it, i personally never bumped the compression so high and increased bore, the way your bike is popping and sputtering sounds apmost like pre mature detonation, so with that said means you might be running so lean its initing under pressure alone.

Connect to the bike using ECMspy(normal or mono) set your AFV to 135% cycle off on try to start. Report back.

 

[Koop]

OK so I used ECMSpy to update the A/F Ratio to 135%... no luck there. Another thing I noticed was that during cranking, the space showing the CPS number to be either 0 (Green) or 5 (Red) is never changing. Is this something to do with using a DDFI 3 ECM and the old ECMSpy software in its incompatibilities of translating correct data? OR, could my CPS sensor be bad even though it checked out using an OHM meter to be at Factory Spec?

 

[Theycallmecrash]

It could be bad. Ohming a hall effect sensor is kinda eh, only real way to test is a scope so you can watch the pattern.

Couldnt hurt to get one and try it. Worst case you end up with an extra part that saves your ass later one if it fails

 

[ich]

K so I used ECMSpy to update the A/F Ratio to 135%... no luck there. Another thing I noticed was that during cranking, the space showing the CPS number to be either 0 (Green) or 5 (Red) is never changing. Is this something to do with using a DDFI 3 ECM and the old ECMSpy software in its incompatibilities of translating correct data?

2008+ engines do not have a camshaft sensor installed, therefore no camshaft sensor data can be displayed.
adjusting a ddfi-3 ecm with the pirated ecmspy version will most probably brick it.
but keep on trying, your bike, your money ...

 

[thrstrmech]

think you need to give the guys at EBR a call and discuss the issues you have at hand, think they'll probably ask if you have the CD with tuning software or ask you to ship the ECM to them and have it reset to base calibration map. either way something is off, not showing any codes doesn't seem right either, maybe I'm wrong, but it's worth getting any info from the people that created it. EBR's engineering dept. should have tons of data showing failures and successful loads, performance data of the ecm. they would make patches to correct failures and probably capable of doing target loads in the software where needed to correct faults to allow proper operation of the component.

think the guy you bought it from may have done some changing of settings, f@#!ed it up and had the same issues, couldn't figure it out and decided to sell the bike, just saying it's possible

good luck and don't give up

 

[Theycallmecrash]

2008+ engines do not have a camshaft sensor installed, therefore no camshaft sensor data can be displayed.
adjusting a ddfi-3 ecm with the pirated ecmspy version will most probably brick it.
but keep on trying, your bike, your money ...

Again shut up and quit trolling.

What ich is trying to say, is beause you have a crank sensor, not a Camshaft sensor, so using ecmspy you wont get the 0-5 green red reading.

About using ecmspy, and bricking it, ich doesnt even have a motorcycle and never actually road or tuned a motorcycle, he lives in a little cubical reading binary code in the dark cause he has no friends. I use ecmspy on my 08 all the time to reset AFV and TPS reset, never had an issue. I wont be attempting to burn or fetch eeproms with it though.

This is very difficult issue.

 

[ich]

i met the coder, and he confirmed, that ddfi-3 is not supported at all and that he stopped development before it was fully done. it's buggy as hell, but, well, as mentioned already, your bike, your money ...

 

[Koop]

thinking about it, i personally never bumped the compression so high and increased bore, the way your bike is popping and sputtering sounds apmost like pre mature detonation, so with that said means you might be running so lean its initing under pressure alone.

that throws another question into the list of many... when I turn the bike over using a wrench on the crank gear it almost feels like it gets to a point where it doesn't want to turn anymore. Could my compression be that high to where it's detonating when it shouldn't be? I guess I need to go just get the compression tester and do the test.

Regarding the ecmspy software, I have heard that the old version does not work with the ddfi3 ecms. They read the eeprom in a different way. I think that maybe the guy that tad the bike before me used it to tune and screwed it up to begin with....? I will give Erik buell racing a call on Monday to see what they say about it. I really don't want to drop a grand on a new ecm and their software, but at this point I'm so frustrated that I just want to get it done.

 

[Theycallmecrash]

Hey this ghetto as fuck but hear me out.

Open your tables in tunerpro. Open the timing tables. Add 5 to everything. Both front and rear. Save as a test file. Up load to the bike, any change when trying to start.

Again this is just a test to see if the timing is too advanced for the compression. If it improves or attempts to start, add another 5 see what happens. This is ghetto as fuck

 

[Koop]

Bike is going to the dealership today... again. I hope they can figure it out this time.