Tune development

VersaTuner for Mazda SkyActiv Diesel powered vehicles
shr3k
Posts: 25
Joined: February 2nd, 2017, 6:17 am

Re: Tune development

Post by shr3k »

mk_ wrote: April 27th, 2021, 5:43 pmWhen you say "Stage 1 Performance", do you refer to old 1.08 tune, or new 2.04 Beta tune?
Of course old tune over rail pressure, not the new one over start of injection.
2004 Mazda3 Sedan 1.6 MZ-CD 115hp; 2007 Mazda5 2.0 MZR-CD 145hp; 2009 Mazda6 WGN 2.2 MZR-CD 185hp, 2014 Mazda6 WGN 2.2 CD 175hp A/T VersaTuned - my exs
2019 Mazda2 1.5 A/T 90hp selftuned, 2018 Opel Insignia Country Tourer 2.0T 4x4 320hp EDS Phase 2+
Jpk
Posts: 37
Joined: December 5th, 2019, 6:10 pm

Re: Tune development

Post by Jpk »

I personally have been interpreting it as the old tune has meant the 1.08 stage 1 performance. Hope I'm right otherwise I've been tweaking the wrong tune 😱albeit the errors were definitely in that tune
Jpk
Posts: 37
Joined: December 5th, 2019, 6:10 pm

Re: Tune development

Post by Jpk »

Also shr3k could you please explain what the

unknown egt limit related multiplier 1 & 2

Is or controls. I put the values back to stock but unsure what it'll do. No 1 doesn't seem that different to stock 0.16 compared to 0.02 but no 2 is 1634 as opposed to 0.4 in stock tune
shr3k
Posts: 25
Joined: February 2nd, 2017, 6:17 am

Re: Tune development

Post by shr3k »

Values are named KQFULLDNI and KQFULLDNP, and are right before KQFULLDNTHEX_S (what should be EGT limiter 790 deg. C - THemperature EXhaust). It is possible it was badly scripted before.
2004 Mazda3 Sedan 1.6 MZ-CD 115hp; 2007 Mazda5 2.0 MZR-CD 145hp; 2009 Mazda6 WGN 2.2 MZR-CD 185hp, 2014 Mazda6 WGN 2.2 CD 175hp A/T VersaTuned - my exs
2019 Mazda2 1.5 A/T 90hp selftuned, 2018 Opel Insignia Country Tourer 2.0T 4x4 320hp EDS Phase 2+
Brnt84
Posts: 15
Joined: February 1st, 2019, 9:46 pm

Re: Tune development

Post by Brnt84 »

So, has anyone tweaked the beta tune yet ?
I thought Versatune would be doing more regular updates to the beta tune.
Jpk
Posts: 37
Joined: December 5th, 2019, 6:10 pm

Re: Tune development

Post by Jpk »

me too, especially after submitting several logs. i've tweaked the beta tune myself but not messed with anything major as i'm not a tuning expert. i dropped the egt limit closer to stock @ 815 celsius, the unknown egt multiplier 2 to stock as it was way way too different from stock so had me concerned even though i don't really know what it does, also changed the unknown app mapping maybe 1, 2 & 3 tables back to stock as it's got a gentle curve above 70% APP as the revs increase whereas the beta map was just flat 70%, 75% etc right across the rev range. i haven't tested it to destruction like i did when i was submitting logs when this tune first landed so unsure if it'll still cut the power at extreme loads at wide open throttle to rpm's above 4000 as i don't normally drive that way. i do regularly accelerate hard though cycling up the gears normally changing from 2800 - 3800rpm and have so far not had any problems and prefer the tune over all the others. more than happy to share it if i'm allowed so you can look at the changes yourself but like i said i don't claim to be a tuner, i've just got a lifetime of aerospace engineering background from leaving school and im 41 now so gone off gut feelings with changes i've made where loads & limits have appeared drastically different from stock.
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