Which ECU does not interpolate?
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Which ECU does not interpolate?
As stated in the topic header, I was reading on 32x32 tables and the devs argument against it saying because the ecu interpolates between cells, having such a large map isn't necessary, and he also mentioned that there are actually certain ECUs that do not interpolate between cells
I actually didn't know this and assumed that all ECU interpolates between cells and so, just for general knowledge, which ecu in the market exactly do not interpolate between cells?
I actually didn't know this and assumed that all ECU interpolates between cells and so, just for general knowledge, which ecu in the market exactly do not interpolate between cells?
Re: Which ECU does not interpolate?
An uneducated guess would be all the ECUs that heavily market how many cells they have in their tuning tables...
I was being "informed" by a racer boy in another shop near where I work on my cars that MS was severely lacking since it had so few tables and how great X, Y, and Z brand ECUs were since they had 40 zillion cells in their tables. I decided that it wasn't worth the time to try to inform him otherwise as he kept going on, and on...
I was being "informed" by a racer boy in another shop near where I work on my cars that MS was severely lacking since it had so few tables and how great X, Y, and Z brand ECUs were since they had 40 zillion cells in their tables. I decided that it wasn't worth the time to try to inform him otherwise as he kept going on, and on...
Josh
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Re: Which ECU does not interpolate?
So.... exactly which one? I don't think it could be the big players like Haltech or Adaptronic no?
Re: Which ECU does not interpolate?
I'm not an expert at this, or experienced in tuning them, but the guy who was telling me about it was claiming the superiority of Haltech, and a couple of others, but I didn't have any experience with them or any particular interest in getting such so I wasn't paying overly much attention.
My suggestion that they did not have it is based entirely on the claim that they are 'superior' due to having so many more cells, not on any actual knowledge that they do not interpolate. That said, my thought is that if they were able to interpolate, why would they need so many cells? (128 if I remember the claim correctly...) Looking at the Haltech website, I can't see any specific claim there, but the pictures seem to have a scroll bar along the bottom of the cells, with 21 columns showing, and 16 rows.
I'll leave it at that, hopefully someone with actual experience on some of the other ECUs can chime in and say something about them?
My suggestion that they did not have it is based entirely on the claim that they are 'superior' due to having so many more cells, not on any actual knowledge that they do not interpolate. That said, my thought is that if they were able to interpolate, why would they need so many cells? (128 if I remember the claim correctly...) Looking at the Haltech website, I can't see any specific claim there, but the pictures seem to have a scroll bar along the bottom of the cells, with 21 columns showing, and 16 rows.
I'll leave it at that, hopefully someone with actual experience on some of the other ECUs can chime in and say something about them?
Josh
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Re: Which ECU does not interpolate?
http://www.msextra.com/forums/viewtopic ... 220614Well the post in question was written by jsmcortina so hopefully he can come in and enlighten us abit
Anyway,here's the link to that particular post
Anyway,here's the link to that particular post
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Re: Which ECU does not interpolate?
I was hoping that post had died off.
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Re: Which ECU does not interpolate?
Well, I apologize for bringing up such an old post, but stumbled upon it when reading on why Megasquirt uses 16x16 instead of larger tables.jsmcortina wrote:I was hoping that post had died off.
James
So, any ECU in specifics does not interpolate between cells? Or are they only limited to really really old ECU's since that post is also quite old as well
I'm already using an MS3x now by the way, just want to know this as extra knowledge in case any of my friend asks for recommendation, I can tell them what to avoid
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Re: Which ECU does not interpolate?
It is still a sticky, so expect it to resurrect every now and then.jsmcortina wrote:I was hoping that post had died off.
James
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Re: Which ECU does not interpolate?
Ah, not any more it isn't.subwoofer wrote:It is still a sticky, so expect it to resurrect every now and then.
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Re: Which ECU does not interpolate?
So.... still can't get a definitive answer?
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Re: Which ECU does not interpolate?
Let us know when you find it.Nightstalker1993 wrote:So.... still can't get a definitive answer?
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Re: Which ECU does not interpolate?
i know of one that have a terrible interpolation but I don't want to give a bad reputation to another emc since I make some $ tuning them.
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Re: Which ECU does not interpolate?
Interesting to know and also glad that you didn't post it as that isn't the kind of negativity that we want on this forum.elturbonitroso wrote:i know of one that have a terrible interpolation but I don't want to give a bad reputation to another emc since I make some $ tuning them.
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Re: Which ECU does not interpolate?
theres a lot of bad stuffs I could said about this ecu but I don't want to bring other ecus lack of features to this forum even features that are 1990 stuff but don't get me wrong thid ecu are very famous on the rotary world .
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Re: Which ECU does not interpolate?
Ah, that was all I needed, I know which one you're talking about.
Megasquirt is not for use on pollution controlled vehicles. Any advice I give is for off road use only.
Re: Which ECU does not interpolate?
I have thought about this topic (and specifically the thread link posted above) as i was tuning other ecu's with more cells.
Maybe i am not using some of the same features as others on this forum but having -for example- 32x32 has not proven to bring anymore benefit in fueling or ignition accuracy than the 16x16 tables on the MS3. Actually i just find that it is more time consuming to try and smooth.
One thing that i really like about the MS3 compared to others that I tune is the ability to use the idle table and get exactly the resolution I want in the idle range.
Has anybody found larger tables to be better in accuracy or stability?
Maybe i am not using some of the same features as others on this forum but having -for example- 32x32 has not proven to bring anymore benefit in fueling or ignition accuracy than the 16x16 tables on the MS3. Actually i just find that it is more time consuming to try and smooth.
One thing that i really like about the MS3 compared to others that I tune is the ability to use the idle table and get exactly the resolution I want in the idle range.
Has anybody found larger tables to be better in accuracy or stability?
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Re: Which ECU does not interpolate?
I'd like to know names....
98 Subaru Forester, ej205 turbo, MS2 extra.
1970 Datsun 510 turbo running MSx 029t. L20b with wasted spark, 4-1 crank wheel, td04 turbo
1970 Datsun 510 turbo running MSx 029t. L20b with wasted spark, 4-1 crank wheel, td04 turbo