anyone notice the very hot days the bike ran a wee bit shitter than usuall,

I would just have put it down to mayby a bad drop of fuel from aplplegreens

(I know -thats another thread lol)

but I noticed this on 3 bikes I was riding.

When it got cooler in the evening the bikes ran perfect and back in our winter during the very cold and dry days the bike ran and feel better than ever.

One of these was a carb fed bike the other are Fi, I would have thought the FI system would correct this but no.

I can understand the cold air during them times in winter as things on cages like inter coolers if I understand it correct cool the air down before it gets into the cylinder but I might be completely wrong,

but during the very hot days the fi bikes and the carbd ran rough.

I know or think that bikes are tuned for which ever part of the world there going to like Continent wise , a middle east bike with 40+ temps as norm would be set up different than a European bike NO??????