Originally Posted by JaveStack
(Post 1487499)
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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Originally Posted by Joseph Conley
(Post 1487504)
His signature, go to trubokitty.com. Typo is on purpose.
However, that basemap has "additional drivers" selected, so it is running full sequential? Are the settings not different for semi-sequential? 1/3 and 2/4 pairing? 1/4 and 2/3? Running adjacent cylinders in the firing order together makes the most sense to me... but I want to make sure Im not crazy. |
injector timing map wont change.
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Originally Posted by Braineack
(Post 1487508)
injector timing map wont change.
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Originally Posted by JaveStack
(Post 1487515)
So -340 degrees for "injection timing 1" means that Injector Bank A fires 340 degrees after cylinder 1 hits TDC on the power stroke (so 20 degrees before intake stroke begins on cylinder 1)? Then does Bank A fire again 360 after the first event? Does Injector Bank B fire 180 degrees offset from Injector Bank A?
https://cimg4.ibsrv.net/gimg/www.mia...b40c10c306.jpg The fact that the injector banks each fire twice per 720 degrees and alternate A/B is why it is set to 2 squirts per cycle alternating? |
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As I didn't get any input on my questions about timing, I just threw cuation to the wind and started street tuning. I spent about 3 hours driving, stopping, using VE Analyzer, and driving again. By the end of the night my car ran great up to 6000RPM. I did not tune above 6000 yet. Given that, here is my VE map. Still seems wonky to me, but the car is running pretty well...
https://cimg0.ibsrv.net/gimg/www.mia...9df01ec877.jpg One thing I noticed today... I heard something "Click" (similar to the sound of a relay) somewhere in the car, and the car started running extremely lean. it bounced back and forth between lean and rich for a while, then it cleared up. This is the second time I have experienced this phenomenon, though last time I didn't hear the "click". Almost like whatever that is could be causing my rich AFR issues. If anyone has any insight into what I should be troubleshooting, I would really appreciate it. I attached my most recent tune file in case anyone is interested in taking the time. Spark is supposed to be set "going low" unless you have mods like Jim's of BIP373's right? |
that chart is wrong, the injectors and coils are banked differently.
spark is 1/4 & 2/3 inj is 1/3 & 2/4 94-97 cams are: intake: 5° BTDC 48° ABDC exhaust: 56° BBDC 14° ATDC If you're targeting end-of-squirt to be 340° -- that would mean the MS would time your pulse to stop injecting at 25° BTDC, or just 10° before the valve starts to open. which IMHO is a pretty good target to get all the fuel at the valve. the click was probably your fuel pump relay turning off, which is not good. |
Originally Posted by Braineack
(Post 1487739)
that chart is wrong, the injectors and coils are banked differently..
Originally Posted by Braineack
(Post 1487739)
the click was probably your fuel pump relay turning off, which is not good.
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There isn't something wonky with that VE map, it is indicative of something being fundamentally wrong in the setup. I would strongly suggest you get it resolved before moving forward.
I asked you earlier if you were using the DIYautotune basemap, and then pointed out fueling related configurations that are different. Hint hint ;) the DIY basemap should pretty much be a known-good starting point. |
i mean if youre going to bother rewiring for semi-seq (which is still functional in wasted spark), then just wire up for seq. injection, which the car is already wired for.
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Originally Posted by Braineack
(Post 1487745)
i mean if youre going to bother rewiring for semi-seq (which is still functional in wasted spark), then just wire up for seq. injection, which the car is already wired for.
BUT if someone was to do semi-seq properly, would it be necessary to pair the injectors with the spark banks as I did in that chart? |
Originally Posted by Ted75zcar
(Post 1487744)
There isn't something wonky with that VE map, it is indicative of something being fundamentally wrong in the setup. I would strongly suggest you get it resolved before moving forward.
I asked you earlier if you were using the DIYautotune basemap, and then pointed out fueling related configurations that are different. Hint hint ;) the DIY basemap should pretty much be a known-good starting point. The very last thing you mentioned, which made a lot of sense, was that I was probably getting more squirts than I thought. However, I switched to 1 simultaneous squirt and it didn't improve my troubles... I think I have genuinely attempted every suggestion you have made? Plus I have tried every other combination I could think of, none really have an effect. Which I suppose could be a symptom on its own. Spark is supposed to be "going low" unless you have a spark mod, right? |
you're not wrong, but I'd never bother to wire up for semi-seq.
this is a good read: https://www.miataturbo.net/megasquir...uel-ms3-86364/ tl;dr semi and untimed are essentially the same, except one gives you control over the timing. |
No the point I am trying to make is this...
Go to DIYautotune, download the basetune, load it on your ECU, see if that does anything different. If it doesn't, then you likely have a HW problem. If it does (favorably) then you likely have an MS configuration problem. Trying to get something different to work (semi-sequential, alpha-n, no additional drivers, different dead time, adjusted injector fuel rates, ...) on top of trying to get the baseline to work is a tough row to hoe. Once you get the base working as expected, you can start making changes, like the semi-sequential or sequential. I don't doubt that semi-sequential has advantages, or Brain wouldn't have it in his tune. |
Originally Posted by Ted75zcar
(Post 1487764)
No the point I am trying to make is this...
Go to DIYautotune, download the basetune, load it on your ECU, see if that does anything different. If it doesn't, then you likely have a HW problem. If it does (favorably) then you likely have an MS configuration problem. |
what are your ignition mods? that's the only way we'll be able to know
if you had it wrong your coilpacks would have burnt up by now. |
Originally Posted by Braineack
(Post 1487770)
what are your ignition mods? that's the only way we'll be able to know
to fix several issues I found with the hardware setup. https://cimg0.ibsrv.net/gimg/www.mia...83b0075eb3.jpg
Originally Posted by Braineack
(Post 1487770)
if you had it wrong your coilpacks would have burnt up by now.
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that should be set to normal (going low)
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Originally Posted by Braineack
(Post 1487792)
that should be set to normal (going low)
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Originally Posted by Ted75zcar
(Post 1487764)
No the point I am trying to make is this...
Go to DIYautotune, download the basetune, load it on your ECU, see if that does anything different. If it doesn't, then you likely have a HW problem. If it does (favorably) then you likely have an MS configuration problem. Trying to get something different to work (semi-sequential, alpha-n, no additional drivers, different dead time, adjusted injector fuel rates, ...) on top of trying to get the baseline to work is a tough row to hoe. Once you get the base working as expected, you can start making changes, like the semi-sequential or sequential. I don't doubt that semi-sequential has advantages, or Brain wouldn't have it in his tune. |
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