I had one on my last bike. I highly recommend them too, but don't forget to will need to weld in a new boss for the lambda sensor as it is much bigger than OEM. Also you will need to block the PAIR valves so false readings are not taken by the sensor I used mine to create a number of bespoke maps eg one for max power and another for commuting. I however preferred just to keep the max power map because frankly it was more fun!. Don't fit one though thinking it is plug and play. You need to understand how it works otherwise you will probably end up with a very lean map!. You need to know what AFRs are required in what throttle position(TP) and RPMs. In initial setup I had a problem with it going lean in RPMs/TP areas where I generally engine brake, - you just need to consider this when setting your AFRS. In the end I ended up with a map that only varied by +/- 3% on a given day which ensure the bike was ALWAYS running perfect. Read this for more info, its from another forum i'm on which is supported by Dynojet. How to AutoTune?
Great info, now further research needed! Just been for a spin on the pcv I fitted this week and really impressed. Thanks for the advice.
Remember AT is not fully automatic and if your running it with a loaded map from the site or another user take time to understand the software and check the AT trim tables often, once they settle down and stay within the 20% safety band you can leave it pretty much to its own devices, also best AFR does not always make best power, power is a trade off of many factors and IMO AT is best used with a custom base map, if your dyno man is keen he could program the AT target table for best power not an easy job but would test his worth!
The forum post was interesting and the dynojet guys know their stuff. Be quite interesting playing about with the maps. It's interesting reading the at only deviates +/- 20% I guess this is for safety. Right on the look out for an autotune and a de cat link pipe for the Akra! Thanks again.
Yes for safety you can change it if you wish, but the idea is that should the sensor fail it will only max out at 20% rather than say lean the motor 100% also you can fit the map switch to the PCV but the function changes when used with AT and lets the user switch from AT and a fixed base map, again here you could use AT for best fuel econ and base map for best power.... and I hope they do know there stuff, I'm just some Joe who likes to tinkle
Sorry old thread but what kind of A/F ratios are you guys seeing on stock bikes? I fitted a Bazzaz Z-AFM and I am seeing a lot of 12.2 ratios on mine which surprised me as I expected it to be lean from the factory Running stock pipe with PAIR mod done. The bung is located 2cm to the left of the stock bung.
These figures are based on my previous CB1000r with a decatted Leo Vince can. When I had it dynoed the AFRs were generally above 13:1. Mostly 13.2:1 in the upper rev ranges and higher TPSs. My AT was set between 13.8-13.2:1, the leaner AFR generally used where I tend to cruise i.e. better MPG. Hope that helps
Thanks for that. Wish I knew why mine is running rich especially since the ride home where I started mapping again was mainly cruising.
re the richness where in the rev range/TP% does this happen? Check the obvious, filter in good condition and nothing is blocked. Is your exhaust sooty? what is the condition of your plugs? do they also indicate rich mixtures? Maybe try an ECU reset. You could just do a power run at your local dyno to check your z-AFM is reading correctly.
All the way up to around 60% from memory I just installed the quick action throttle and did the PAIR valve and every looked good. I havent pulled the plugs though. I've ordered a new sensor so should be here next week. The bike feels fine and idles fine too. It even shows 12.8 at idle.
Just found my CB1000R Autotune AFR map, this was used in conjunction with a custom dyno map. The CB ran just sweet, had trouble keeping the front down when feeling naughty notice I ran 13.4:1 @ idle, 0's represent where the AT was disabled and I was running the custom map.
