A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

is it neccesary to do a TBA when switching modes on a chip?

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Old Oct 11, 2005 | 06:46 AM
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Default is it neccesary to do a TBA when switching modes on a chip?

ie if i were to switch from 'chipped' mode back to stock mode, should i do a TBA before starting the car? this is with an APR EMCS chip by the way.
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Old Oct 11, 2005 | 06:54 AM
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is this mode switching within the chip? If so, no TBA necessary IMO
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Old Oct 11, 2005 | 07:08 AM
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Default yes, it's done with a remote switch...

so there's not actual switching of physical chips.
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Old Oct 11, 2005 | 07:32 AM
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Default you're fine.

TBA is done so that the ECU learns of the throttle curve. In your case that data has been written previously (whenever the chip was installed and batt disconnected), so it's still there and valid, written/shared into those switch-on-demand maps.

That's how I think it is ;-)
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