Hi people, I'm about to have the screaming eagle exhaust and air filter fitted to my 500, there may be better exhaust out there but this is the only one my dealer here in Australia supplies which won't void warranty. I have been quoted $472 for exhaust and $108 for air filter, I was given a discount on this amount which I paid 6 weeks ago when I picked up my bike, but had to wait for these accessories which only arrived yesterday..........does my bike need re-tuning??? I haven't been told about a tune nor been charged for it. I will ask my dealer on Thursday when my bike goes in but thought I would ask here first and prepare myself for any extra money I may need for the tune, thanks