Looking at some of the threads alot of people are being told by Courtenay that their exhaust is to blame for lower results.
I know this, because when I went they told me the same thing! The exhaust was too small. I changed the exhaust last week and have found it better, though needs another remap as it feels a bit out.
I'm not anoyed but why is this a common mistake?
Just going to run a pole for Courtenay customers who have been told this. Please vote as above.