100 hours, still slightly worse than a stock ecu. - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 05-04-2014, 03:22 PM   #21
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What kind of dead times are you using?
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Old 05-04-2014, 03:28 PM   #22
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[ATTACH][ATTACH]100 hours, still slightly worse than a stock ecu.-screenshot-19-.jpg[/ATTACH][/ATTACH]

I got it running much smother today. Idle set at 13.2 ish, but just realized that i have been driving around all morning with out the iacv plugged in. The idle is more stable than ever and now Im afraid to plug it back in!

Right now I have the iacv unplugged, ergo set at zero (0) and enrich turned off. currently it goes off-the-chart lean for a half second, then two numbers under target for about a second and a half AND then hits the target AFR. so two big swings to both sides of target AFR before locking on. Hold my hand and guide me to my next move, please?
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100 hours, still slightly worse than a stock ecu.-screenshot-17-.jpg   100 hours, still slightly worse than a stock ecu.-screenshot-18-.jpg  
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Old 05-04-2014, 03:37 PM   #23
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What kind of dead times are you using?
Question marks surrounding my forehead...
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Old 05-04-2014, 03:39 PM   #24
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100 hours, still slightly worse than a stock ecu.-screenshot-20-.jpg

This!
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Old 05-04-2014, 04:53 PM   #25
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I have an ms3 so my menu is a little different, but the dead times should probably be closer to 1. The battery correction I'm not sure about.. might be right, might need to be .1
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Old 05-04-2014, 05:12 PM   #26
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With stock injectors, 1.3 isn't terrible. I know the newer RX8 or '99+ miata injectors really like dead times closer to 1.0. You could try that, but I'm guessing it won't help. Unless I missed somewhere that you have an NB, in which case yes, change that to 1.0. But it wouldn't help accel enrichments.
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Old 05-06-2014, 08:31 AM   #27
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So after tuning off the ergo control, I think I am starting to understand what you guys mean when you say " tune, tune,tune"! Hitting AFR targets with ergo is easy. It seams to fix your mess. Endless amounts of cruising, tuning, wot, tuning, cruise, tune...I think I am getting it now.

I still have lean spike but have not addressed it yet either. AE is still off as well. Which brings me to my new question....

With AE turned off ( by off I mean that I have it set at 100/100 min max) why does the engine go super rich for a second, when I step on the throttle?
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Old 05-06-2014, 08:47 AM   #28
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probably because you dont actually have it off and the table it poorly tuned.

a car without AE turned on is almost undriveable, turn it on and tune it.
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Old 05-06-2014, 08:48 AM   #29
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Because when you step on the throttle you enter a different part of the VE table, presumably this area is far richer. It needs to be tuned.
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Old 05-06-2014, 09:24 AM   #30
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Tuning....
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Old 05-06-2014, 09:28 AM   #31
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Originally Posted by 18psi View Post
You need a game plan. Do things in order. If you jump around trying to tune different things based on what you seen others do in other threads and don't do things in order you're gonna have a real bad time.

Been there, done that.

Start with the basics - a solid base map. make sure your req_fuel is spot on and all sensors and thresholds are calibrated and good. Then work on a solid, no-nonsense idle. Then dial in solid VE map cells that are just stationary and revving. Make a solid spark table and leave it pretty much alone. That will be almost completely the last thing you tweak. Focus on a very solid and smooth ve table and make sure your afr targets are good. No spikes, no garbage. You'll have to do a lot of autotuning for this. Then when map is nice and smooth/solid make sure your warmup trims and temp corrections are good. note the temps you're tuning the base map with so that later you can taper up/down for temp changes hwen it gets colder and hotter. Then work on your ae and eae enrichments. MSextra is a very good source of info on that, as well as diyautotune writeups, and of course this place. Between the three, thats where I got all my MS knowledge, and I've been able to easily appy it to pretty much every version of MS I've worked with so far: mspnp, diypnp, ms2e, ms3, etc.

Of course lots of people helped me along the way, but that was for the more advanced stuff, not for general tuning.

Hope that helps.

(PS: sorry can't look at your map I'm on a computer that doesn't have TS and can't download it right now)
This makes it sound like AE should be the last thing I do. This is where tuning confusion sets in.. set it, or don't set it. Set it somewhere close?
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Old 05-06-2014, 09:40 AM   #32
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Crap! I just realized that if AE is set at 100/100 and the rpm threshold is in the operating range, I am getting AE !
He clears the chalk board and starts over....
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Old 05-06-2014, 09:53 AM   #33
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Originally Posted by ryansmoneypit View Post
Crap! I just realized that if AE is set at 100/100 and the rpm threshold is in the operating range, I am getting AE !
He clears the chalk board and starts over....
just tune AE. Don't keep it off, there's no reason whatsoever to have it turned off.


your spark table is pretty aggressive, btw. I'm assuming n/a for life?
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Old 05-06-2014, 10:20 AM   #34
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Originally Posted by Braineack View Post
just tune AE. Don't keep it off, there's no reason whatsoever to have it turned off.


your spark table is pretty aggressive, btw. I'm assuming n/a for life?
NA for a while. At this point, I couldn't imagine throwing boost into the recipe. I check the plugs regularly, no signs of detonation or sounds of it.
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Old 05-06-2014, 11:21 AM   #35
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your spark map is like the equivalent of running 20 static timing; if that puts it in a better perspective.
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Old 05-06-2014, 11:52 AM   #36
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I understand. What I don't understand is why that is bad if I can get the AFR without detonation? Or is it just hard on the engine without any performance gain?
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Old 05-06-2014, 11:55 AM   #37
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that.
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Old 05-06-2014, 12:03 PM   #38
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Originally Posted by Braineack View Post
that.
And this is why I need a dyno to tune the spark table?
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Old 05-06-2014, 12:05 PM   #39
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And this is why I need a dyno to tune the spark table?
Or you could use any one of the proven and relatively bullet proof tables posted on this forum.
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Old 05-06-2014, 01:01 PM   #40
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Spark table= 500 threads.
Proven spark table= 7 with useless content.

This is going to take a while.
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