I have put together a package of a few different Innovate Products for datalogging on your gen1 or gen 2 Hayabusa.
MTX-L wideband O2 sensor with gauge https://www.innovatemotorsports.com/products/MTXL.php
SSI-4 Plus: 4 Channel Sensor Interface https://www.innovatemotorsports.com/products/ssi_4plus.php
PL-1 Pocket Logger https://www.innovatemotorsports.com/products/pl1.php
Pre-wired to just plug in on a Hayabusa using factory connectors. You get air fuel, rpm, and 3 other analog sensors of your choice (like TPS, boost, gear position, vacuum sensors).