MS2 small pulsewidth correction request.
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MS2 small pulsewidth correction request.
Hi developers,
I have a question.
Is it possible to implement the small pulsewidth correction in MS2? I'm bodging my VE table at the moment to correct small pulsewidths, but it would be so much better to have a separate correction table.
Regards, Rene
I have a question.
Is it possible to implement the small pulsewidth correction in MS2? I'm bodging my VE table at the moment to correct small pulsewidths, but it would be so much better to have a separate correction table.
Regards, Rene
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
Re: MS2 small pulsewidth correction request.
I'm guessing a no here......
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
Re: MS2 small pulsewidth correction request.
I'm not sure anyone knows what your asking. Is your ve table to coarse in your idle areas? Big changes between numbers?
306 SBFord, Torquer II EFI intake, 60 lbs injectors, 8 LS2 coils, VS Racing 7668 turbo, 4R70W, MS3x fw1.4 w/built in trans controller.
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Re: MS2 small pulsewidth correction request.
What he's talking about is the correction table that MS3 has for non-linear response at small (usually sub 2 ms) pulse-widths.
It's entirely possible to program it, it's just a question of the time spent doing it and if you have to compromise by removing another feature/diminishing the size of another table to cover it.
What are your engine details? If you set your car up to run 2 squirts/alternating your pulse-widths at idle should be long enough that you avoid non-linear operation of your injectors. My friend has a 1.8 Miata with 550ccs that still gets 2 ms at idle with 2 sqts/alternating. If we go to sequential injection the pulse-widths will be even longer.
However, I too would like this feature. I was prepared to go to MS3 to get it, but the developers are still developing so let's see what they have to say.
EDIT: The roadmap seems like the devs are gearing up for the final stable release of MS2E. Something like this would require a lot of development and reworking so probably isn't on their plate. Just saying.
It's entirely possible to program it, it's just a question of the time spent doing it and if you have to compromise by removing another feature/diminishing the size of another table to cover it.
What are your engine details? If you set your car up to run 2 squirts/alternating your pulse-widths at idle should be long enough that you avoid non-linear operation of your injectors. My friend has a 1.8 Miata with 550ccs that still gets 2 ms at idle with 2 sqts/alternating. If we go to sequential injection the pulse-widths will be even longer.
However, I too would like this feature. I was prepared to go to MS3 to get it, but the developers are still developing so let's see what they have to say.
EDIT: The roadmap seems like the devs are gearing up for the final stable release of MS2E. Something like this would require a lot of development and reworking so probably isn't on their plate. Just saying.
Re: MS2 small pulsewidth correction request.
I run a V8 on semi-sequential mode. This means it is impossible to go to 2 squirts alternating. A good way to solve the problem of having small pulsewidths on overrun conditions would be a "small pulsewidth correction table", as present in MS3.
That's why I ask. If this will be implemented in MS2 I can stick with MS2, if not I have to spend some money on MS3....... It seems a bit silly though to buy MS3 just for a basic function like this......
That's why I ask. If this will be implemented in MS2 I can stick with MS2, if not I have to spend some money on MS3....... It seems a bit silly though to buy MS3 just for a basic function like this......
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
Re: MS2 small pulsewidth correction request.
Why is it always so hard to just say "no" or "yes"'?
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
Re: MS2 small pulsewidth correction request.
If I'm asking the wrong questions please tell me so.....
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
Re: MS2 small pulsewidth correction request.
Any chance this will be implemented in the near future?
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
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Re: MS2 small pulsewidth correction request.
I'm not the one making the decision but I would say no.sd1nl wrote:Any chance this will be implemented in the near future?
Jean
Re: MS2 small pulsewidth correction request.
??sd1nl wrote:I run a V8 on semi-sequential mode. This means it is impossible to go to 2 squirts alternating.
Why not? Unless I've completely lost track, you can certainly run 2 squirts alternating on semi-sequential. Assuming 4 fuel channels, your squirt pattern would be something like 1-5 2-6 3-7 4-8 1-5 2-6 3-7 4-8.
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Re: MS2 small pulsewidth correction request.
No you can't. The semi-sequential mode is hardcoded (all the sequential/semi-sequential modes are) and this means that with a V8 and 4 injector channels, you get one pulse per rev per channel. This is actually what you show in your squirt pattern (assuming you show one engine cycle).
Jean
Jean
Re: MS2 small pulsewidth correction request.
So what am I describing, then - 2 squirts simultaneous?
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Re: MS2 small pulsewidth correction request.
No. 4 squirts/alternating would be the closest but the sim/alt nomenclature loses its meaning when going with more than 2 injector channels and sequential/semi-sequential. Both 4sq/alt and 2 sq/sim mean the req fuel computations uses 1 sq/rev per injector channel.
Jean
Jean
Re: MS2 small pulsewidth correction request.
That explains why I was getting confused ...racingmini_mtl wrote:the sim/alt nomenclature loses its meaning when going with more than 2 injector channels and sequential/semi-sequential.
Which is pretty much the best you're going to get on a V8 without going to MS3 ...Both 4sq/alt and 2 sq/sim mean the req fuel computations uses 1 sq/rev per injector channel.
Now that I've figured out what I'm talking about -
Rene - any chance of an msq so we can take a look at it, maybe offer some suggestions?
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Coming soon: OctoMAP Sensor Module
TTR Ignition Systems
Re: MS2 small pulsewidth correction request.
Of course, feel free to have a look.
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
Re: MS2 small pulsewidth correction request.
Too bad the implementation of features is always surrounded by a cloud of mystery.......
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
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Re: MS2 small pulsewidth correction request.
I'm not seeing any mystery?
There are no plans to implement this on MS2.
James
There are no plans to implement this on MS2.
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
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Re: MS2 small pulsewidth correction request.
That is at least a clear answer for once!
Rover Vitesse 3.5
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor
MS3 full-sequential
36-1 triggerwheel
Direct coil control
Innovate LC1 wideband lambda sensor