closed loop with wideband

s300 and SManager software questions & answers
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sicones
Posts: 33
Joined: Sat Dec 26, 2009 5:50 pm

closed loop with wideband

Post by sicones »

When I set the closed loop on and set it to used wide band for closed loop the short term fuel trim sits a 1% and long term fuel trim sits at 0%, it never changes. It needs more part throttle tuning but closed loop should still work. I have also seen the same behavior on 3 other cars with very different setups, a H22, a turbo D16Y8 and a JDM B18CR with different widebands, LC-1 and AEM.
Smanager v1.5.4

LS/vtec in 00 EK
10:1 CR
skunk2 pro1 cams
stock ignition
ID1000 injectors
AEM W/B on D12
75shot fuel/ign controlled by secondary tables (BTW can you please fix the bug that un-checks nitrous 1 active under secondary tables after a save and reload before some blows their motor!!!)

this data log was before the alternator was changed, you will noticed the battery voltage fluctuating, it has been changed and sits at a steady 14V+
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Spunkster
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Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: closed loop with wideband

Post by Spunkster »

Have you modified the ECU as it states in the help file?
http://www.hondata.com/help/smanager/an ... ghtsub=d12
sicones
Posts: 33
Joined: Sat Dec 26, 2009 5:50 pm

Re: closed loop with wideband

Post by sicones »

Seriously? Even if that cap wasn’t there you would get an erroneous A/F ratio and the short term trim should not be pinned at 1%. Try again, maybe look at the datalog this time and offer some useful help. Not trying to be a huge dick but all you guys do it post useless links to the help file.
sicones
Posts: 33
Joined: Sat Dec 26, 2009 5:50 pm

Re: closed loop with wideband

Post by sicones »

Anything, and what about the bug?
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Spunkster
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Posts: 23890
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: closed loop with wideband

Post by Spunkster »

I have tested this in my own vehicle and cannot reproduce what you are describing. Have you modified the ECU as the help file says?

Make sure your voltage conversion table is as follows:

0 5 5
10 20 20
sicones
Posts: 33
Joined: Sat Dec 26, 2009 5:50 pm

Re: closed loop with wideband

Post by sicones »

Yes c42 is there from the factory, I have in fact tried it both ways
0 0 5
10 10 20

And

0 5 5
10 20 20
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Spunkster
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Posts: 23890
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: closed loop with wideband

Post by Spunkster »

I have noted the secondary tables parameter bug.

Have you tried an alternate input?
sicones
Posts: 33
Joined: Sat Dec 26, 2009 5:50 pm

Re: closed loop with wideband

Post by sicones »

Not yet, I will try and report back this weekend.
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