Get TUNED

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Very interesting. I put a full new system on my bike but it doesn't have an O2 sensor in the headers. I was fine tuning a few bits & bobs & talking to my mechanic mate in his workshop just a few weeks ago & he said if I want it to run right throughout the rpm range then I should fit an O2 sensor. I was planning to do it next week. Now I have even more reason to do so!

Not to sure how many times you can say the same thing ............. you don't need an o2 sensor (unless you want to data log or monitor fuel) Simply have a fuel map built for your bike ............... thats why it's called tuning. Once the system throws to open loop it's not even connected regardless of if it's fitted or not Due to this it's certianly going to struggle to have ANY input on how your bike runs UNDER ANY CONDITIONS when it's not even connected

+1 There's enough sensors within the efi system to keep a good tune going, Try tuning Mechanical Fuel injection , every hour things change!!!

Leonard.