Did the F3 300 have custom pipes made for it ?
I have shown a comparison of custom 300 pipes vs 250 pipes and the 300 performed beter with its own pipes designed for it .
Andy , we are not concerned about 250 secrets - I am asking about 300's . You have said that they don't perform so I doubt people bring their bikes to you guys for a detune . Then surely the recipe to ruin a 300 should be put up for all to see to warn other riders . It can't be top secret if it nothing special is shown by the results .
Only when you have a true complete 300 can you compare it to a 250 . Even the F3 250 ! We're talking motor , carbs , pipes and ignition tuned for a 300 vs the same for the 250 which the F3 is tuned for .

I can't explain why I am 2 seconds a lap quicker on my 300 compared to my 250 .