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 Post subject: Megasquirt Tuning
PostPosted: July 2, 2018, 12:33 pm 
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Would anyone be willing to look at my tune and offer any advise? I can send the MSQ.

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 Post subject: Re: Megasquirt Tuning
PostPosted: July 2, 2018, 5:53 pm 
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You should be able to compare your fuel map to a miata. I guess you want to make some improvements in order to drive to the dyno?

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 Post subject: Re: Megasquirt Tuning
PostPosted: July 6, 2018, 9:31 am 
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I could take a quick look at it. What engine do you have? Is it running? Have you taken any logs?
Let me know via PM.
Paul

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 Post subject: Re: Megasquirt Tuning
PostPosted: October 6, 2019, 3:39 pm 
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I just found this post. I feel like an idiot. I got so side tracked I forgot all about asking for help. I don’t get updates sent to my email from this site on a regular basis anymore. Kinda odd I used to. Sorry guys.

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 Post subject: Re: Megasquirt Tuning
PostPosted: October 6, 2019, 4:59 pm 
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Me too. It's off and on. I'll bet Paul's offer still stands.

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 Post subject: Re: Megasquirt Tuning
PostPosted: October 6, 2019, 5:54 pm 
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It does.
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 Post subject: Re: Megasquirt Tuning
PostPosted: November 16, 2019, 7:57 pm 
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Let's see if this works October Tune 2019.msq

Somehow I don't think so

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 Post subject: Re: Megasquirt Tuning
PostPosted: November 17, 2019, 9:37 am 
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Steve. You can Zip the MSQ file and post it here. Zip files are an allowed filename here.

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 Post subject: Re: Megasquirt Tuning
PostPosted: November 17, 2019, 9:53 am 
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Ok Chuck I'll try this to see if you guys can see it. Thank you, as always your the man!!

Attachment:
October Tune 2019 (1).msq.zip [15.08 KiB]
Downloaded 104 times

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 Post subject: Re: Megasquirt Tuning
PostPosted: November 17, 2019, 11:09 am 
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Well, it is there. I cannot help reviewing the msq as my MS and TS software are on my old laptop, long ago out of service. Hopefully someone here can read it and help.

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 Post subject: Re: Megasquirt Tuning
PostPosted: November 17, 2019, 12:12 pm 
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rx7locost wrote:
Well, it is there. I cannot help reviewing the msq as my MS and TS software are on my old laptop, long ago out of service. Hopefully someone here can read it and help.

Thanks Chuck.
I went to your MG build site. Not one pic is saved in there. I had no idea you started a build and here there’s 11 pages. Wow. I’d like to do something in the vintage cars and race it. So cool you have a project. Pretty much sucks the pics are gone. At least I can’t see them.

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 Post subject: Re: Megasquirt Tuning
PostPosted: December 21, 2019, 6:19 pm 
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Installed tuner studio lite to see your msq. Total newbie to this but your 3d maps seem to tell the story.

Are you not using a maf? It has speed density selected.

Use the sliders to move the maps around to see the topography. Look for holes and peaks then figure out why.

You have a very lean mountain in the afr table at 65% load from 1800-2600 rpm, but everywhere else(less load, more load, more rpm) is richer.

On the ign map you have a ditch at low load and rpm with very few data points coming out of it where the rest of the map is very flat. Generally all advance in by 3000rpm (think old school flyweights) and a separate consideration is fuel efficiency by adding timing at light loads (think vacuum advance) that gets pulled out with increasing load. If you are using egr, there is advance of a few degrees when the egr is open and depending on how open it is/duty cycle).

Also, the mostly flat areas don't need many data points so shift more resolution to the area with a lot of change.

Can you upload the stock tune for comparison? Should not need to deviate much from that.

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 Post subject: Re: Megasquirt Tuning
PostPosted: December 22, 2019, 9:38 am 
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Miatav8,MstrASE,A&P,F wrote:
Installed tuner studio lite to see your msq. Total newbie to this but your 3d maps seem to tell the story.

Are you not using a maf? It has speed density selected.

Use the sliders to move the maps around to see the topography. Look for holes and peaks then figure out why.

You have a very lean mountain in the afr table at 65% load from 1800-2600 rpm, but everywhere else(less load, more load, more rpm) is richer.

On the ign map you have a ditch at low load and rpm with very few data points coming out of it where the rest of the map is very flat. Generally all advance in by 3000rpm (think old school flyweights) and a separate consideration is fuel efficiency by adding timing at light loads (think vacuum advance) that gets pulled out with increasing load. If you are using egr, there is advance of a few degrees when the egr is open and depending on how open it is/duty cycle).

Also, the mostly flat areas don't need many data points so shift more resolution to the area with a lot of change.

Can you upload the stock tune for comparison? Should not need to deviate much from that.


MV8, Hey thanks for looking at this for me. I am running MAP, so the speed density is selected. I don't have an ERG if that helps. This thing is bare bones. I do have an economy box in the program that is set up on my highway cruise. As for the rest of it this is mostly set up by the self-tune on the MS program. The timing map I had a guy from Canada help me when I first set this up and he called safe timing. There is no doubt its leaving HP on the table. I would love to get ahold of a stock tune but where? I can't find really anything about them. I do have a current log but it won't post here.

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 Post subject: Re: Megasquirt Tuning
PostPosted: December 22, 2019, 11:19 am 
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Posting this so Chuck can see what you have and you can see what I am talking about. The general idea. Not an expert on this.

If you have all the timing around idle to comp for oscillations, try taking out the timing and tweaking the pid gains down until it stops, find where it just starts to oscillate and bring it back a scosh.

Didn't look at everything.


Attachments:
TUNDRA MSQ.JPG
TUNDRA MSQ.JPG [ 322.71 KiB | Viewed 6561 times ]

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 Post subject: Re: Megasquirt Tuning
PostPosted: December 22, 2019, 12:32 pm 
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Miatav8,MstrASE,A&P,F wrote:
Posting this so Chuck can see what you have and you can see what I am talking about. The general idea. Not an expert on this.

If you have all the timing around idle to comp for oscillations, try taking out the timing and tweaking the pid gains down until it stops, find where it just starts to oscillate and bring it back a scosh.

Didn't look at everything.

I did some looking around again this morning for a stock MSQ. Not a lot of luck. I did find what looked like a turbo MSQ that was capped off at 100kpa but the map went out to 230kpa. I not exactly sure if that’s what I was looking at or not. The fuel at 100 was at 89 compared to mine at 58. Then there were a lot of other parameters that were really different. I’ll have to do more looking around. I have time. With a pile of snow on the ground I am not going anywhere.

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