SavedbyGrace,
I have also had problems tuning out mid range bog on m7 with jaws twins, as I'm sure many have. Running similar #'s to Aueland and after reading your post what I take from that is to eliminate #'s or have very little in load ranges that aren't applied eg. 3000 md&hi, 5000 hi, 6700 lo, 7800 lo, 8100 lo&md. My question is in the instructions it stats that the rpm ranges overlap, so at 4000 rpm for example is the number overlap 3000 hi to 5000 lo? Also wondering if fuel is only tuned for load, for example making long pull and turning out as engine decellerates do you need #s in md setting to keep from burning down. I have been all over the place with numbers in mid range to try to tune this bog out, maybe just wrong spots. Problem seems to be heat related as it gets more frequent the warmer sled gets. Hope you can make sense of some of this.
Running 3000-6000ft.
Thanks
Yeah…you’re getting the idea. This question is a good one, I get asked it a lot.
"My question is in the instructions it stats that the rpm ranges overlap, so at 4000 rpm for example is the number overlap 3000 hi to 5000 lo?"
The answer is no, the lo, mid, hi have nothing to do with how the rpm ranges blend (overlap). The lo, mid, hi is engine load, the control box determines this engine load according to injector load (duty cycle) or throttle position (TPS). So you basically have two reference points to consider when adjusting fuel in a certain area, one is rpm range, two is load range. Using your example, if 4000 rpm is the target, which happens to land directly in the middle of 3000 and 5000, the appropriate rpm adjustment point would be either 3000, 5000, or a little of both. The question now becomes, where to make the adjustment in 3000 and 5000, in lo, mid, or hi? 4000 rpm is right there at early clutch engagement, low to mid engine load or throttle position, probably more low at 3000 and more mid at 5000, this is where you would most likely want to make your adjustment.
The real trick, is knowing rather you are in low, mid, or hi at any given time. The BD box has a couple of features that can help with this, one is the stats screen can display the current rpm, and load range, another is an optional mid light, which is a small, but very visible light that can be mounted on the dash or handle bars. This light can be set to light up whenever the box is in the mid load range, allowing the rider to know which range he’s in a any given time.
I hope this helps, if this is at all confusing to anyone please let me know and I will do my best to clarify.
I am looking at buying 05 m-7 with cuttler 1000 it has older boondocker box but rpm range only goes to 7800 & this motor runs at 8100 will this box add enough fuel at 7800 range to work when motor is spinning at 8100? how much to get box updated with 8100 rpm range added & would this change fuel mapping? thanks. P.S. what is no for tech at Boondocker canada.
Adjusting numbers at 7800 on that box will affect everything from 7800 rpm and up.
Depending on how old the BD box is we may be able to reprogram it with some different rpm ranges, if you were to feel like different rpm ranges would be beneficial. This would affect the tuning already done with the old program, but you could use those old numbers as a good starting point with the new program.
The price to have a BD box reprogrammed is $62.50.
Boondocker USA toll free: 1-877-522-7805
Boondocker Canada toll free: 1-877-449-2699
Thanks for the questions,
Junior
