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Post by Stinger on Feb 20, 2018 17:07:47 GMT -5
Does the MS2PNP not come with a base tune?
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Post by msimpson on Feb 20, 2018 17:52:50 GMT -5
It does. But how does that work, do I set that table up to go past 100kpa along with the fuel table? Just not sure how to modify the tables for a boosted car
Attached a screenshot of a ign table in a msq file another guy sent me. Too much timing for an iron E7 head car
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Post by msimpson on Feb 20, 2018 17:56:39 GMT -5
Other than that I used his tune and just changed it to my size motor and injectors, set required fuel, etc. Everything else looks decent, it's just that timing table.. I would like to get something safer to get me in the ballpark range. Or would I be better off just using the base map tune included and change kpa to 200 for each table (fuel and timing) - then adjust the AFR table to where I want it to be across the board, get it running and driving then let auto tune sort it out
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Post by msimpson on Feb 20, 2018 17:58:38 GMT -5
Attached the tune I modified for my particular setup just for anyone to see everything that can suggest any changes
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Post by Stinger on Feb 21, 2018 0:40:20 GMT -5
I'll agree that the values above 100kPa in your table don't make sense from a theoretical standpoint. Advance shouldn't be the same or anywhere close to the same at 2500rpm and 6000rpm on a turbo engine that reaches full boost in the midrange. If you look at our "Megasquirt tuning basics - timing" sticky thread linked below, there is a sample timing table in there. It's for an iron head 8:1 turbo engine and 93 octane fuel. Since you've got higher compression you'd need to pull a few degrees from it, and if running 91 octane, pull another 2 degrees. That basically puts you at using the 300kPa row in our timing table as the 200kPa row in your table and then interpolating down to your 100kPa values, leaving everything in your table below 100kPa alone. Note TunerStudio has "interpolate" buttons to make this "easy" after you set the top (200kPa) row and have the 100kPa row already set. stinger-performance.proboards.com/thread/1003/megasquirt-tuning-basics-timingWith that said, nobody can make you a "perfect" timing table without putting it on a dyno and doing timing sweeps to find "ideal" timing for your particular combo.
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