Speeduino ECU Tuning Guide | Part 12: Using Autotune CORRECTLY to tune fuel | Megasquirt, KDFI etc.

#ecu #tuning #megasquirt
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In this video we will be showing how to tune Fueling using the Autotune feature within Tunerstudio for all ECUs that use this software such as Megasquirt, Speeduino, Microsquirt, KDFI, RUSEFI etc.
and how to actually PROPERLY use this feature so that it makes sense
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[@throttlebuddies6356]

As always if you want to know specific details, need help, advice or tuning services, hit me up on instagram: instagram.com/_throttlebuddies/ If you want to show support for what i do + some benefits, check out my patreon: patreon.com/Throttlebuddies?Link

[@J27M]

Thank you so much. I now understand the difference between a base map and the tuning and refining that goes into making that base map better. And also appreciate you doing this in English which I’m guessing isn’t your first language! Just a random, funny question - does the speeduino ecu have an obd2 style port for your laptop to connect to?

[@throttlebuddies6356]

Great to see that it helps. No the ecu is connected to the laptop with usb There are some ecus that use a serial port though but not obd usually

[@J27M]

@@throttlebuddies6356 thank you mate. One more question - do you use Tuner Studio MS or Ultra?

[@throttlebuddies6356]

I use the normal version

[@J27M]

@@throttlebuddies6356 the paid version or free?

[@Collin-sm6yu]

Could you recommend a good and safe timing map? I am currently tuning my 1.6 na miata with a larger t3 turbo on US 91 gas. It gets very hot where I live and I do not have access to 93 octane so I am worried that I’ll experience pre-detonation on basemaps. Also, I noticed that a popular basemap, Trubokitty, has what looks like different timing and afr maps depending on ECU. I know the table sizes are different but why would the tables be different? I am running a speedyefi if that matters. THANK YOU!

[@throttlebuddies6356]

if you could send me a dm on instagram id be able to help you out with one

[@arnoldodida]

You make a really good instructor.

[@sorinsop]

what's the deal with above 100 VE values like 119 122, you need bigger injectors? shouldn't be 100 or 99 maximum volumetric efficiency?

[@throttlebuddies6356]

@@sorinsop the injector size is correct. Its often the case that you have values over 100 especially when you dont have accurate data for dead times. And in forced induction applications you are pretty much always gonna have ve values above 100 since you are obviously forcing more air into the engine

[@dimitriskarampatsos7318]

Does acceleration enrichment affect autotune? Should it be disabled?

[@throttlebuddies6356]

in theory it shouldnt, although in "very easy" it might affect it somwehat

[@luxundre2]

32:27 😆😆😆 hummmm, just kidding, thanks for the lessons, regards from Brazil.

[@christianlegra6898]

Would i be able to use this for a 650hp application? I want to use this to control the manifold port injectors i will be adding to my build. It will be dual injection ( direct and hopefully port injected)

[@throttlebuddies6356]

sure it would be possible, you would need to just be a bit more carefull and do really short pulls at the beginning and get a basemap. Also start on the richer end and let autotune dial it back

[@mofidgorgis2059]

This realy helped me Thank you man! 👍

[@paulawill0238]

Im finding that auto tune will tune my idle and then it will start to jump around and also want to die at stop lights, so I lock out those cells from changing and this seems to help keep idle stable and no die out when rpms drop back down. 99 miata.

[@throttlebuddies6356]

Yeah thats kinda the issue with autotune on idle that i said in the video aswell. You have to set idle to a fixed value and dont let autotune modify it

[@wackydriver]

Good video, from what I have seen there is also Lambda Delay reference table seems like a good idea to also set that one (I think it could be possible looking at the logs, when e.g. DFCO kicks in vs RPM vs AFR), not maybe initially but to fine tune the autotuner, what do you think?

[@throttlebuddies6356]

havent messed around with it yet, the standard values seemed to be fine for me