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Author Message   Spike240sx Posted on Wednesday, June 08, 2011 - 09:11 pm:        Ok guys, I need some help. Im not too familiar with Tubers yet. I have a friends 99 X1 here and its Missing really bad. It had one error code in it. Front 02 always rich. Ignition seems good. Has a new fuel pump. Injectors seem fine. Checked all connections and it still misses badly. Any Ideas? And does anyone have a service manual in .pdf?   01x1buell Posted on Wednesday, June 08, 2011 - 09:12 pm:        front 02??? my 01 x1 has one single o2 in the rear. do you have a ecmspy cable?/   Spike240sx Posted on Wednesday, June 08, 2011 - 09:31 pm:        Sorry you are correct. Its the rear. and yes I have an ECmSpy cable.   Jramsey Posted on Wednesday, June 08, 2011 - 10:09 pm:        Replace the o2 sensor # Bosch 12014,local auto parts store '90-up Chevy pick-up part. About $20.00   Spike240sx Posted on Wednesday, June 08, 2011 - 10:14 pm:        Will the (always rich) code cause a misfire and just poor running though?   Jramsey Posted on Wednesday, June 08, 2011 - 10:25 pm:        If the o2 sensor is kaput the cold start enrichment(about 150-160%) won't decrease to 100% as the motor warms up and will run like a carb'b bike with the choke 3/4 pulled.   Spike240sx Posted on Wednesday, June 08, 2011 - 11:13 pm:        That is the best way to describe how this thing is running. This is why I love this Family. Ill go grab an 02 in the morning and see how it goes. Thanks Guys!   Spike240sx Posted on Thursday, June 09, 2011 - 06:57 am:        One more thing, Whats the Idle Spec. I know he turned it up so it would stay running. Thanks guys.   Jramsey Posted on Thursday, June 09, 2011 - 07:27 am:        1050 is the book spec I set mine a tad higher.   Spike240sx Posted on Thursday, June 09, 2011 - 07:36 am:        Thank you!   Kalali Posted on Thursday, June 09, 2011 - 11:38 am:        "02 always rich" If that's what the bike is telling you then there lies your problem. Contrary to popular belief, the DDFI ECU diagnostics are generally right on target.   Spike240sx Posted on Friday, June 10, 2011 - 11:42 am:        Got the O2 swapped out. After about 20 miles she now runs like a champ. There is a bit of a dead spot at around 3800 RPM but I believe its due to the K&N and Vance pipe on the stock tune. So now I am in hunt for a tune.   Preybird1 Posted on Friday, June 10, 2011 - 11:47 am:        the only other thing it could be is the rear head temp sensor. It could even be the ECM.   Kalali Posted on Friday, June 10, 2011 - 02:31 pm:        "K&N and Vance pipe on the stock tune." You're running too lean. If you like, drop me a PM and I can send you my maps tuned for V&H and Forcewinder. You may still need to fine tune the maps to suit your specific motor and where you live.   Spike240sx Posted on Friday, June 10, 2011 - 03:17 pm:        The bike runs fine. So its not a head temp sensor. It needs a tune. Kalali- PM Sent.   Kalali Posted on Saturday, June 11, 2011 - 07:30 am:        Done. Let me know how you make out...   Spike240sx Posted on Saturday, June 11, 2011 - 03:03 pm:        ••••! She runs like a raped ape now! Flat spot in the RPM range is gone. Runs perfect. So good that I bought the bike!

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