<div class='quotetop'>QUOTE (Thom @ Sep 3 2008, 09:48 PM)
<{POST_SNAPBACK}><div class='quotemain'>Biaggis M1 had carbs not efi,bodywork similar to the 500 not its own,and that weird clutch that made a huge noise as it reengaged going into a corner,five valve heads not four,different firing order etc surely if Biaggi had access to a bike as good as the 04 (relative to the performance of the 02 and 03 m1 incarnations) hed use it?!2002 was the first season which allowed 990 cc 4-strokes to be raced alongside 500 cc 2-strokes. In a change from their V-4 YZR500, Yamaha designed the YZR-M1 (for "Mission One") with an inline-4 engine, in order to have a longer swingarm and shorter wheelbase. Also, Yamaha wanted to preserve the superior handling of the YZR500, so the M1's engine was designed to fit in a chassis similar to the YZR500's. The M1 was outfitted with an electronic engine management system that controlled the engine braking endemic to 4-strokes.[1][2]
The M1 was test-ridden
and developed by Max Biaggi, John Kocinski, Norihiko Fujiwara and Kyoji Namba throughout 2001. It was raced in the 2002 season by Biaggi and Carlos Checa on the factory team, and towards the end of the season M1s were also provided to Norifumi Abe, Olivier Jacque and Shinya Nakano.
In 2003, the engine went from carburetion to fuel injection, and the Engine Management System was changed to the Idle Control System.[3]
Biaggi achieved 2 wins in 2002, and placed second in the final standings as did Yamaha in the manufacturer's championship. In 2003, M1 riders were Checa, Alex Barros, Olivier Jacque, Marco Melandri, Shinya Nakano and Norifumi Abe, and there were no wins and Yamaha came in third in the manufacturer's championship.
taken from wiki. to be honesrt i canrt remember all rthe bikes ins and out as it was a long time ago but tyhis change was before rossi got his hands on the bike, so ok maybwe more chucka creation