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Thundermax help?

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Old Jul 20, 2011 | 10:20 AM
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Default Thundermax help?

When linked up and guages showing, bike running, showing target AFR of 13.84... Rear cylinder shows 13-14 afr. In the green.... Front cyl AFR shows 18-20 in the red!!!!!!!! Is this normal for the front cyl to be in the red when idleing???????
 
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Old Jul 20, 2011 | 10:30 AM
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That would be terribly LEAN correct?
 
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Old Jul 20, 2011 | 05:01 PM
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Yes that is lean. With computer connected to ECM, ignition on engine not running the O2 sensors should read around 19.3. If not the sensor has failed.

Check also the trouble codes.
 
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Old Jul 21, 2011 | 08:17 AM
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Thats good info thanks, I did the tmax support data collection deal and sent it off, i'll wait to see what they have to say..
 
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Old Jul 21, 2011 | 08:31 AM
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I'll hook the bike up again and check that the AFR's are around 19.3 with bike off.
The thing thats weird is when i check the corrections that auto tune makes it doesnt show anything about a really lean condition on the front cylinder. Front only showed 165 corrections...
 
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Old Jul 21, 2011 | 07:32 PM
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Update..... Sent tmax my data logging, Corupted map. Spike or surge in system, checked all connections and reset new basemap. Sync'd 02 sensors and POOF problem gone. No check eng light at idle, clean AFR's at idle and at throttle, and the bike runs GREAT.... I changed the routing of the front 02 sensor wiring to under the tank, much cleaner and its away from the heat of the exhaust....
I was ready to throw the tmax to the highest bidder and buy somthing else...
I'll let this this thing work its magic and hopefully im back in business.....
 
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Old Jul 21, 2011 | 10:03 PM
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