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FAQ ID # 673
Last Update : 2015/05/26
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Question / Issue
I've been using the map that was sent to me and I checked my plugs and it appears that I'm running on the lean side of things. There's some detonation going on and it's causing the plugs to loosen. I'm running 93 octane pump, should I switch to 100 octane?

Answer / Solution
Your suggestion to use a higher octane fuel is spot-on. If you hear detonation (ping) or suspect it is occurring DO NOT OPERATE your bike until the problem is resolved! You can break a rod, wrist pin etc. AKA, destroy your engine before you know it. As far as the plugs coming loose: Busa’s typically do not do this. Please use anti-seize on your threads and a torque wrench – it’s also important to use the correct socket. We have only heard of plugs coming loose when the socket is too large in diameter to allow the plugs to fully tighten. For this to occur, the socket bottoms out (around the outside diameter of the socket) in the bottom of the cylinder head casting. It’s important to use a thin-wall socket to prevent this from happening. FYI: We construct our own, using an OEM Busa socket wrench, out of the stock tool kit, welded to a standard 3/8 drive socket (works great). We have attached a copy of the same map – with 15% more fuel added in the 80-100% columns. Please feel free to add more yourself also. Please note: you need a custom map to extract full potential from your bike.

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top end package map fuel detonation spark plugs lean rich afr octane
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