Speed Passion 2.1 May 31, 2010 14:13:13 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by speeddemon on May 31, 2010 14:13:13 GMT Maybe a stupid question but can you update the software on the new Speed Passion 2.1 to run modified motors (5.5T-6.5T) or is it only stock motors (10.5T-17.5T). Cheers. Gary