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Author Topic: Thundermax TBW installation problem (fixed)  (Read 2557 times)

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prostreetboy

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Thundermax TBW installation problem (fixed)
« on: August 29, 2010, 12:33:56 AM »

I finally received the Thundermax TBW tuner and associated V&H exhaust (power duals and monster rounds) for my 2010 SESG.  After installation per instructions, I started the bike and it barely ran and only if I opened the throttle a bit.  Something was obviously not right, so I shut it down and rechecked installation and looked into troubleshooting section of TMax manual.  It talks about making sure O2 sensor calibration reads 19.36 after 10 seconds.  My sensors are stuck at 9.30, which I think is the default value for the AFR on the TMax tuner.  The tuner is reading temperature and throttle position but doesn't seem connected to the O2 sensors.  The diagnostic codes all look good.

I triple checked all connections and I can feel O2 sensors heat up after about 10 seconds or so.

I did find one thread on the web where a guy had the same issue, but he had an older tuner and had not hooked up power through the diagnostic cable.  I don't think the same thing can happen here.

Any thoughts over the weekend before I call Zippers on Monday?

I think I'm jinxed on this install.  It took me 3 months to get the monster rounds and power duals.  After installing the power duals, it turned out that the right side header was oversized and I couldn't slip the muffler on.  V&H sent me a new set, but that took another week...and now the TMax issue.  The bike has been on the lift for 2 weeks and I'm getting cranky!!!!
« Last Edit: August 30, 2010, 04:59:52 PM by prostreetboy »
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V&H Power Duals
Monster Rounds
Thundermax TBW

prostreetboy

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Re: Thundermax TBW installation problem (fixed)
« Reply #1 on: August 30, 2010, 05:05:36 PM »

Spent some time with Thundermax this morning.  I connected with a guy named Bob who is actually in development but was called to help because the rest of the tech guys were busy.  He was absolutely awesome...patient and fixed the issue.  Two main things:

1).  The manual calls out that a calibrated O2 sensor value should be 19.38.  It turns out that the calibrated O2 value on TBW (throttle by wire) bikes is 9.30.  My sensors were working perfect.

2).  I couldn't get the bike to idle.  The TAC idle throttle value was set correctly to 95 and then would go down to 8-10 when I started the bike and the bike would die.  Bob had me start the bike at about 1500rpm and then slowly roll-off (spent about 10 seconds at 1500, 10sec at 1200, 10se at 1000).  This allowed the ECM to learn the correct position of the throttle butterfly which turned out to be about 35.  He didn't know why it didn't respond immediately, but it works great now.

It's all buttoned up and I'm going for my first ride.  Hopefully, this will help someone out in the future.
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V&H Power Duals
Monster Rounds
Thundermax TBW
 

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