Mark I optimizers from a M1100DS
actually worked on my HM1100Evo. Spark plugs don't lie (well usually, unless you a introduce a fuel additive). If what is supposed to happen AFR wise occurred, then it went from 14.7:1 to 13.6:1 with the older individual in line units, or something like that, since I only tested by plug chop. The fact the motor pulled a lot harder down low and ran much smoother was also obvious.
Another member has reported that the Mark II optimizers from a 1100DS worked on an M1100Evo. These are the ones that use a PCFC box as the hardware with two in line connectors originating from one line out of the single control unit. I'll let you know if they work and if they are indeed adjustable.
I removed the Mark I (borrowed) optimizers (thanks Ung) and went back to the lean closed loop operation to feel the difference when the open loop/PCV map kicks in. You can feel it alright.
I now have an economy map down low and a power map from 4000rpm and 20%+ish throttle (or whatever it is). I need the economy map with 12.5 litres of fuel
. A CCW tank does not let you use the Corse Dynamics, TPO or WASP kits with their large diameter velocity stacks and giant pods.
The Optimizers did not eliminate the popping at low throttle openings, but did remove the surging and gave wonderful throttle response. The popping was reduced in that it was no longer gunfire like backfiring, just popping. Smooth and willing, and no more ragged low rpm operation. Wow, you can feel the extra 200cc over my high comp M900. The fact that the bike has a large bore 2 into 1 DP system (up to 54mm) must contribute to the popping despite what map you run.
The Bazzaz optimizers (really O2 eliminators) were the only device to stop the popping almost completely, but at the expense of very poor fuel economy and fouled plugs. They
drowned the problem away. If you run them, you need to remove up to 20% fuel down low according to the instructions and the Bazzaz ZFi tuning unit lets you tune everywhere, so you can actually do this. As Ung explained, the PCV Optimizers tell little white lies while the Bazzaz Eliminators tell big fat lies to the ECU.
A sophisticated, advance tuning unit for sure that lets you map right over the closed loop section (for sale BTW)
.
What I'm hoping to do is tune the Mark II PCV Optimizers to around 14:1 or a smidge less for economy, but a little less ragged low rpm operation. That's if it works on my bike and will let me adjust it with the little screws that allow up to 10% extra fuel. There are 10 positions on each adjuster screw, but I don't know if that necessarily corresponds to 1% increments.
If it doesn't work then I may leave it as is with the power a bit weak down low, but giving me 180 km before the fuel light comes on. I always have the option of Mark I optimizers. It does have the DP Racing ECU so it cant be too dangerous in the low load closed loop map ay?
