Duke 390. Surprising huh…..
".....Bigger bikes", or older bikes; that were not fuel injected - and likely not as constricted up / bound by emission's laws as some (THIS !!!) 'modern' motorcycle(s) ?Thankyou for your information I'm new to the duke world only owned bigger bikes in the past and never had these problems
In saying that - i agree with you. The 390 is quite a fickle beast fuelling-wise. And even compared to other modern bikes i've owned - does run particularly lean as standard. So any opening up / work on the breathing side and / or exhaust is likely to lean it up even more........