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      04-06-2018, 07:45 PM   #1
High Flier
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JB4 Questions

Looking at the user-adjustable settings (Map 6), it looks like JB4 can change boost, fuel bias, and duty bias (timing?). Since these variables are "adjusted" by the JB4, how accurate are these numbers in the data logging?

Anyone familiar with the PID gain...is this part of a tuning loop? If so, does this mean JB4 actually adjusts itself based on feedback from the measured data? This would probably make JB4 much more advanced than any of the other piggyback tunes available.
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      04-06-2018, 08:19 PM   #2
Mike@N54Tuning.com
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Quote:
Originally Posted by High Flier View Post
Looking at the user-adjustable settings (Map 6), it looks like JB4 can change boost, fuel bias, and duty bias (timing?). Since these variables are "adjusted" by the JB4, how accurate are these numbers in the data logging?

Anyone familiar with the PID gain...is this part of a tuning loop? If so, does this mean JB4 actually adjusts itself based on feedback from the measured data? This would probably make JB4 much more advanced than any of the other piggyback tunes available.
Yes the JB4 uses CanBus data and makes adjustments.. Its probably the most advanced piggy back on the market.

Mike
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      04-07-2018, 09:30 AM   #3
Bullitt1841
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Quote:
Originally Posted by High Flier View Post
Looking at the user-adjustable settings (Map 6), it looks like JB4 can change boost, fuel bias, and duty bias (timing?). Since these variables are "adjusted" by the JB4, how accurate are these numbers in the data logging?

Anyone familiar with the PID gain...is this part of a tuning loop? If so, does this mean JB4 actually adjusts itself based on feedback from the measured data? This would probably make JB4 much more advanced than any of the other piggyback tunes available.
Terry would be the best person to answer those questions. Try posting on his forum.

But yes, the JB4 is far more advanced than any of the other piggybacks. The JB4 Mobile app alone is reason enough to not use any other piggyback. Logging is your friend...
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      04-10-2018, 09:32 AM   #4
Mike@N54Tuning.com
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Originally Posted by Bullitt1841 View Post
The JB4 Mobile app alone is reason enough to not use any other piggyback. Logging is your friend...
+1

The Bluetooth Addon with the APP is really a game changer for the JB4!

Mike
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