OK, so I tried the P-108, I-11, D-0 @ 12hz, +/- 20% adjustment last night and this morning into work and it worked great. My base map is reasonably OK, but this revised loop brought the lambda targets into line quickly with minimal overshoot.
I could feel the results almost immediately. Part throttle is a LOT smoother. I'll leave it a couple of weeks for the FC map to build up some results and then take it from there.
Previously I was using P-500, I-50, D-0 @ 3hz and anything more than +/- 10% used to cause wild AFR fluctuations, especially holding it on part throttle in 2nd and 3rd gear.
Good schooling guys!
Auto tune
- 86sixsix
- Posts: 139
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Re: Auto tune
^^^tiny pieces love it *understatement*ignitionautosport wrote:look it up on Wikipedia if you want to blow your mind to tiny pieces.
we need to set up some sort of charitable foundation to help us all suffering mental difficulties after *rsing about with these honey nut fruit loops.
i'm forever twitching and rocking back and forth in dark rooms muttering about integers and gain overshoots. maybe this is just me
Renault 1.6 K7M, '92 Clio 16v shell, Rotrex C30-74, S40, Faceache, Sh***er, YouTube Blue Shed Channel
- 86sixsix
- Posts: 139
- Joined: Fri Aug 05, 2011 8:01 am
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Re: Auto tune
so what you are saying is... i was right all along over the past 24 months? the force is getting stronger in the vee dub for sure, young skywalker...VR6Turbo wrote:OK, so I tried the P-108, I-11, D-0 @ 12hz, +/- 20% adjustment last night and this morning into work and it worked great. My base map is reasonably OK, but this revised loop brought the lambda targets into line quickly with minimal overshoot.
I could feel the results almost immediately. Part throttle is a LOT smoother. I'll leave it a couple of weeks for the FC map to build up some results and then take it from there.
Previously I was using P-500, I-50, D-0 @ 3hz and anything more than +/- 10% used to cause wild AFR fluctuations, especially holding it on part throttle in 2nd and 3rd gear.
Good schooling guys!
small and fast for the win. every time. just look at me hahaha
edit: no, the force is not strong. no jedi powers here at all. *SMALL*. you say you've a pretty good fuel map and are running 20% swings... come on dude...
Renault 1.6 K7M, '92 Clio 16v shell, Rotrex C30-74, S40, Faceache, Sh***er, YouTube Blue Shed Channel
Re: Auto tune
I just gave it 20% authority just in case, but so far the most it's removed is 12%, which is on the very low throttle openings at motorway speeds, and even then it's because I changed the AFR from 14.7 to 16
But yeah, you were right and when it's finished it'll have more power than the Emperor himself and no more than 2% adjustment!
But yeah, you were right and when it's finished it'll have more power than the Emperor himself and no more than 2% adjustment!
- 86sixsix
- Posts: 139
- Joined: Fri Aug 05, 2011 8:01 am
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- Contact:
Re: Auto tune
sweet. 0 reduction and 10 up, me. for when i can't find a v-power pump or run out of sunoco lol
Renault 1.6 K7M, '92 Clio 16v shell, Rotrex C30-74, S40, Faceache, Sh***er, YouTube Blue Shed Channel
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Re: Auto tune
Sort of confused what to do with the idle PID since max is 100
1992 700RWHP Pump Gas BMW
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Re: Auto tune
Jon,
Try P=100, I=11, D=0. On the simulator this gives a slightly faster response on full scale changes as P=100, I=10.5, D=0 which gives better results on smaller changes.
Let us know how it goes, I was planning on trying these figures today but something else came up. I'm also going to follow VR6Turbo's advice and choose one or 2 PWM values rather than the increasing rows that I have. I just rans out of time today and can only mess with my car on Saturdays right now .
Try P=100, I=11, D=0. On the simulator this gives a slightly faster response on full scale changes as P=100, I=10.5, D=0 which gives better results on smaller changes.
Let us know how it goes, I was planning on trying these figures today but something else came up. I'm also going to follow VR6Turbo's advice and choose one or 2 PWM values rather than the increasing rows that I have. I just rans out of time today and can only mess with my car on Saturdays right now .
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- Joined: Fri Dec 04, 2009 1:45 am
- ECU Model: S80 Pro
- Distributor: DTA UK
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Re: Auto tune
Coincidentally I did try 100, 11, 0 - seems to work. Just need to get the DC table better setup.
1992 700RWHP Pump Gas BMW
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- Posts: 24
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Re: Auto tune
Phew just been reading ALL this thread
Kutle: Alan offered him a full refund (around August time last year) it would of saved me a whole loada reading if only he'd taken it
Kutle: Alan offered him a full refund (around August time last year) it would of saved me a whole loada reading if only he'd taken it