Power Vision Information Thread
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
It appears to be a little lean in the mid range, compared to how I set up most tunes. I go about 14.2 or so up to about 60 KPA, fading up to about 13 above about 85 KPA. These AFR numbers are a little +/- as the calibration of a Wide Band can be a little off. Your sweet spot may be a little different.
Did you get this from FuelMotoUSA?
Did you get this from FuelMotoUSA?
my idle, off idle is 13.2, 70-90 kpa is 13.1, 90-100kpa is 12.5, decel area is 12.5 with 12.1 in the trouble range 3000-2500.
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
Dog, thanks for info on the fuel cut off. I don't have a pop, but have the "jake brake" effect when backing off the throttle for corners when riding the twisties. It doesn't seem to matter what the rpm were, it seemed more throttle position related. What I did was in the throttle blade control (alt) I lowered the 5% column 1750-2500 from 5 to 4 which helped. i was looking at the copy of the factory tune this morning, that setting was at 3, so I'll try that out to see of it helps any more. My thoughts are that if the throttle blade moves less in lower throttle conditions it the might smooth out the transitions. It may also help with the pop, just a thought. When the bike was stock, I don't remember having that drop off/cut off being this abrupt.
Road Master
Joined: Mar 2007
Posts: 1,177
Likes: 23
I have seen the screen shot of the things that are in the fuel cut settings table. The settings that the guys like Jamie at Fuel Moto is looking at is fairly involved. IF XXX and YYY happen when ZZZ is greater than some other setting..... That sort of thing.
makes sense- you'll have that j-brake effect as long as the injectors shut down on decel- the engine is effectively shut off at that point. that's why I think the injectors should always remain on for a motorcycle. my decel now feels smoother, no j-brake, but I have that damn ka-pow at 2800.
Also note that Tmax strategy is very different from the HD-Delphi ECM; Tmax does not use manifold pressure, it is 100% Alpha/N all tuning tables are based on TP X RPM, the HD-Delphi ECM is Speed Density and fuel/spark delivery are based on RPM X MAP X TP and which makes things far more dynamic, the closed loop strategy is also completely different as are the tuning tables between the two products.
__________________
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Dog, thanks for info on the fuel cut off. I don't have a pop, but have the "jake brake" effect when backing off the throttle for corners when riding the twisties. It doesn't seem to matter what the rpm were, it seemed more throttle position related. What I did was in the throttle blade control (alt) I lowered the 5% column 1750-2500 from 5 to 4 which helped. i was looking at the copy of the factory tune this morning, that setting was at 3, so I'll try that out to see of it helps any more. My thoughts are that if the throttle blade moves less in lower throttle conditions it the might smooth out the transitions. It may also help with the pop, just a thought. When the bike was stock, I don't remember having that drop off/cut off being this abrupt.
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
90% of our calibrations have decel fuel cutoff in some form and nearly all OEM cals have it. When setup properly you wont even know its there, most riders dont even know there bike is doing it.
Also note that Tmax strategy is very different from the HD-Delphi ECM; Tmax does not use manifold pressure, it is 100% Alpha/N all tuning tables are based on TP X RPM, the HD-Delphi ECM is Speed Density and fuel/spark delivery are based on RPM X MAP X TP and which makes things far more dynamic, the closed loop strategy is also completely different as are the tuning tables between the two products.
Also note that Tmax strategy is very different from the HD-Delphi ECM; Tmax does not use manifold pressure, it is 100% Alpha/N all tuning tables are based on TP X RPM, the HD-Delphi ECM is Speed Density and fuel/spark delivery are based on RPM X MAP X TP and which makes things far more dynamic, the closed loop strategy is also completely different as are the tuning tables between the two products.
would the TPS-based VE bikes like mine be more of an alpha/n system vs speed density? sort of a weird mix- we do use map tables for spark and lambda but ve tables are only tps based. hybrid speed density + alpha/n?
*wow* major earthquake just now as I was typing this.
You gotta love SoCal!
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
yeh I had a chat with Roy at DJ about it- there are different tables / values that dictate when the injectors shut off or turn on- apparently quite complex to mess with.
Road Master
Joined: Feb 2014
Posts: 804
Likes: 237
From: TN
You are welcome to email your map to jamie@fuelmotousa.com and I will take a look, also note very specifically what the bike is doing. If this effect is something you can clearly feel, or is it more of a sound you are hearing during decel.
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Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
Jamie your revision in my tune file to the hidden code on decel fuel cut **fixed the issue** - Happy to report that the window shattering cracks are completely gone- I did some long hill runs and heavy forced decels that would normally result in giving roadside pedestrians a coronary- but nope, nice tame decel!
Damn well done sir, thank you!
Damn well done sir, thank you!