As I understand it, the stepped spray tubes were developed as a fix for a batch of 850s that shipped with muted silencers.
I thought I saw a post here that said the development of the stepped tube was attributed to a California acceleration test with muted mufflers.
Then what made the 850 unique such that it needed the stepped tubes?
Maybe to improve performance?
stepped jet/tube AND needleThen what made the 850 unique such that it needed the stepped tubes?