Hi, I am a newbie at this stuff but have learning as much as I can via all the different forums out there.

Too bad I did not read up more earlier..should have purchased the TTS ;-)

I have a 08 XL 883 with SE Heavy Breather and V&H Straightshot HS Slip-ons and have recently purchased the new SEST w/ Smartune. I have re-flashed the ECM with only a couple of calibrations so far but overall very satisfied with the the results.

I am curious about changing BIAs to affect AFR.. 1) is it really worth changing? 2) According to nightrider.com 14.0:1 is recommended for XL and also according to the site, best to set BIAs to 762. My current bias table usingXL 883 SE Intake and SE race exhaus (176XD005.dt0, if I remember correctly) shows all BIAS as 600.  To change to 762 seems to be quite a lot.  Does nayone know the calcuation for the proper O2 mv to AFR?

Also, does anyone have the pure "stock" VE tables and BIAS values (or very close approx.)  for my bike, very curious as to how different they are from the SE maps and my final figures after tuning.

Thanks, Alex