Hobbit210 wrote:I believe that it's main function is to help equalize the pressures in the carb inlets. There is more to this, as someone will tell you I feel sure, BUT one thing is for sure...you must not run the bike without it...if it will run at all.

Mike

I'm not sure that's an accurate statement being that HRC manufactured plugs for those holes. The only difference I noticed was a slightly rougher mid range and smoother top end when I removed the bottles.

Andy