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-   -   Idle VE Table Values? (https://www.miataturbo.net/megasquirt-18/idle-ve-table-values-97237/)

Ted75zcar 06-20-2018 08:41 PM

Is this the basemap from DIY? I would think that would be pretty baked out.

Have you tested the fuel pressure?

Ted75zcar 06-20-2018 08:45 PM

Oh and incorporate AFR is not the same as EGO

18psi 06-20-2018 08:49 PM

you have alpha-n enabled for your secondary fuel load with 100ve values accross the board
then you have it multiplying ve1 vs ve2

JaveStack 06-20-2018 08:49 PM

Going through the circuit, R33 and R18 are reading open... (active flyback clamp circuit?) Would this cause any issues?

JaveStack 06-20-2018 08:50 PM


Originally Posted by 18psi (Post 1487448)
you have alpha-n enabled for your secondary fuel load with 100ve values accross the board

lol

then you have it multiplying ve1 vs ve2

Yeah.... I wanted to have it engaged but not doing anything so I could tweek it later if I was ready for that level of complexity.

JaveStack 06-20-2018 08:53 PM


Originally Posted by Ted75zcar (Post 1487447)
Oh and incorporate AFR is not the same as EGO

Okay. Noted. So incorporate AFR allows AFR target to help adjust along with VE? EGO changes whatever is necessary to match the target?

JaveStack 06-20-2018 08:54 PM


Originally Posted by Ted75zcar (Post 1487446)
Is this the basemap from DIY? I would think that would be pretty baked out.

Have you tested the fuel pressure?

Yes, base map from DIY

JaveStack 06-20-2018 09:00 PM

Im going to try and find a write up for how to test the active flyback clamp circuit parts. If anyone has a link they know of, that would be awesome, but Ill try to piece it together from the hardware manual.

Ted75zcar 06-20-2018 09:11 PM

If you have an oscope, you can look at the injector low-side turn off. If it rings up and doesn't clamp, then the clamp isn't working. MS2 had a different clamp voltage than MS3, much lower I believe.

JaveStack 06-20-2018 09:19 PM


Originally Posted by Ted75zcar (Post 1487455)
If you have an oscope, you can look at the injector low-side turn off. If it rings up and doesn't clamp, then the clamp isn't working. MS2 had a different clamp voltage than MS3, much lower I believe.

Yeah... havent invested in a scope yet. All my money went to the car... Is there a way to test it with a multimeter and an adjustable voltage source?

To ensure Im not chasing ghosts, this active flyback circuit is important for high-z injectors as well as low-z, right? Mine are 15ohm. I know the PWM flyback damping circuit isnt needed.

Ted75zcar 06-20-2018 09:32 PM

Flyback is for any low side switched inductance. It prevents the switch from being overvoltaged. The injector acrually closes faster without it, or if the flyback voltage is pretty big (like the 36V in the MS3).

JaveStack 06-20-2018 09:36 PM


Originally Posted by Ted75zcar (Post 1487461)
Flyback is for any low side switched inductance. It prevents the switch from being overvoltaged. The injector acrually closes faster without it, or if the flyback voltage is pretty big (like the 36V in the MS3).

So what you're saying is that I dont need it? Or that it should be deleted?

JaveStack 06-20-2018 09:38 PM


Originally Posted by Ted75zcar (Post 1487446)
Is this the basemap from DIY? I would think that would be pretty baked out.

Have you tested the fuel pressure?

I have not tested the fuel pressure. I hear the pump prime and the car was running super rich, so I wasnt thinking supply would be an issue.... IIRC not all cars run the same pressure.... is there a setting in MS to compensate for supply pressure? If I go grab a rental feul pressure gauge from Autozone, what should I be reading as "good"?

JaveStack 06-20-2018 09:40 PM

Should I just say "screw it" and run my stock ECU until my sequential injector card comes from JBPerf? I am fine with that, but just worried ill be wasting time sitting on my hands and still have this problem then too...

I'm coming up on 15 hours of troubleshooting and I'm gonna lose my mind.

Ted75zcar 06-20-2018 10:40 PM


Originally Posted by JaveStack (Post 1487462)
So what you're saying is that I dont need it? Or that it should be deleted?

no, without it you blow up the injector drivers

JaveStack 06-20-2018 10:42 PM

According to some other forum posts and adaptronic educational material, my setup for semi-sequential is not optimal. Tomorrow Im going to switch to untimed injection, reset my VE table, and start over. I will let you guys know how it goes. Thanks for all the help thus far.

Ted75zcar 06-20-2018 10:55 PM


Originally Posted by JaveStack (Post 1487463)
I have not tested the fuel pressure. I hear the pump prime and the car was running super rich, so I wasnt thinking supply would be an issue.... IIRC not all cars run the same pressure.... is there a setting in MS to compensate for supply pressure? If I go grab a rental feul pressure gauge from Autozone, what should I be reading as "good"?

~43.5 psi with the pump on and the engine off.

Ted75zcar 06-21-2018 12:15 AM

Honestly man, it is unlikely to be fuel pressure. You PW is like1.6ms when it should be more like 3 or so with a req fuel of 12.1, VE of 50%, load of 30kpa, 100% fuel correction. For sequential, you need 4 separate drivers. If your HW only has 2 batch drivers, then you are probably getting way more squirts than you think.

Braineack 06-21-2018 08:14 AM


Originally Posted by JaveStack (Post 1487435)
Can anyone tell me the proper injection timing values for running semi-sequential? I switched to batch and now it is super lean... leads me to believe this may be the problem.

look at my basemap.


According to some other forum posts and adaptronic educational material, my setup for semi-sequential is not optimal. Tomorrow Im going to switch to untimed injection, reset my VE table, and start over. I will let you guys know how it goes. Thanks for all the help thus far.
semi-seq > untimed.

dont listen to aussies.

JaveStack 06-21-2018 09:04 AM


Originally Posted by Braineack (Post 1487493)
look at my basemap.

Where might I find the most recent version of this fabled document? You have about a gazillion posts on here and I don't want to mix up an old post as "correct" like I have in the recent past...


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