Also if it’s just a slip on?
Adding a fuel controller is too much for me as I don’t think I can set the parameters right.
I have just read that if I make modifications like the air box lid (which I just made today) I might need to fine tune it... Should I go back to the stock lid?
Thanks for your help!
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These things are running lean stock. A safe lean condition, but lean all the same.
Doing any intake or exhaust mods should have a fuel programmer added in order to keep it reliable long term.
And I truly do recommend you do not modify the stock airbox cover. Doing this usually just leads to dirt/water entry into the filter, which will ultimately get into the engine. This is something racers do and is required for every extra little bit of performance they can get. Long term reliability is not part of a racers agenda. In real world everyday use, this simply should not be performed.
Setting up a fuel programmer is not difficult. You can keep adjusting it until you get it right all the while using the bike. Most exhaust manufacturers will even supply a basic starting point on your controller, and in many cases, these are perfectly fine. Leave it and ride.
Trust us. If you can't afford to purchase the fuel programmer now, then you really won't be able to afford rebuilding the engine when you burn up an exhaust valve or melt a piston. Additionally, you'll more than likely have hot running issues which may melt your plastics.