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map questions. (Read 3316 times)

Cristiano

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I love GUZZIs

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map questions.
06/04/10 at 08:00:33

Hello everyone,
I have got a Breva 750 with My15M. Everything sounds good and starts well (just set TDCWhileCranking=0 and decrease prime values),
BUT i don't undestand some things in the Cliff's map:

I have a narrowband o2 sensor

Code:

MyECU Cfg O2=0.00V,0.60V,0.70V,0.75V,0.80V,0.85V,0.90V,0.95V,
# 0 = None, 1 = Inp1, 2 = Inp2, 3 = Both
MyECU Cfg O2Sensors=1

why the second value starts from 0.60, what they rapresent? I thought the right stoichiometric output voltage value was close to 0.50V ,
and how are they link with the bottom of the map?

Code:

RPM         500  1100  1500  1801  2000  2302  2601  2900  3360  3654  4045  4655  5353  6157  7082  8143
Flags  14  (O0)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)
Flags  13  (O0)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)  (O6)
..................
............
......

Thanks.

Cristiano

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raz

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Guzzi 11OO Sport, My16MkV,
Innovate LC-1

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Stockholm, Sweden
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Re: map questions.
Reply #1 - 06/04/10 at 08:19:22

O6 would be the seventh value (O0 is the 0.0V) so your actual target is 0.90V.

I have never used a narrowband sensor but I do know that you can't run a bike on stoich. I currently use Lambda 0.94 (AFR 13.8) as my leanest target, on low load cruising. My richest target is 0.88, or an AFR just below 13.

For a while I used 0.96 (AFR 14.1) as my leanest target and it made no harm to the engine but it also did not save any noticable amount of fuel and the bike was very picky about gas quality. I believe going leaner than that could be dangerous to the engine.

« Last Edit: 06/04/10 at 08:22:34 by raz »

59° North
1100 Sport iniezione elettronica -- the perfect merge of a superbike and a steam train

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YaBB Administrator YaBB Administrator Offline I love YaBB! Posts: 679 The Land of YaBB	Re: map questions. Reply #2 - 06/04/10 at 08:33:28 0.5V may well be Stoic for a narrow band but there are a few differences. Firstly, I'm not sure the standard sensors used by Guzzi are like the cheap narrow-band sensors. They seem to have a bit more range. 2ndly for narrow-band sensors the transition is so quick you would not notice much difference from 0.2V to 0.7V anyway.
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greenmonster

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Re: map questions.
Reply #3 - 06/04/10 at 10:32:51

Quote:

I have a narrowband o2 sensor

Quote:

2ndly for narrow-band sensors the transition is so quick you would not notice much difference from 0.2V to 0.7V anyway.

Fr what I understand, those sensors are worthless f tuning.
Normally, they control the low TPS from idle to around 4500 RPM circuit f low emissions etc.

A wideband sensor is necessary f good tuning.

« Last Edit: 06/04/10 at 10:34:19 by greenmonster »

Ducati 907IE MyECU P8

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