looking for lambda sensor & fuel/air ratio info/input..
1v output it lambda 1, the stoicywhatsit best catalysation ratio blah blah I know all that - I need some better info on how to interpret the output from these magical thingies a bit better.
< 1v is lean right ?, so > 1v must be rich (well duh)
0.85 > 0.9 is ideal for power ? (knowledge runs dry about here )
so just how much less than 0.85ish is considered 'too' lean.. ?
I'm fairly sure (after driving around with a multimeter reading out the sensor output on the passenger seat) that I'm running lean at WOT - (the flowed head was never mapped in).
Only trouble is the MBE ECU seems to 'pulse' the sensor at about 1hz which makes getting a reading a pain in the arse cos the meters all over the place with the voltage jumping up and down, so I can only guess at the true reading - is this normal for ECUs to drive the sensor like this ? - and more importantly why ?
I'm really just after some info - I'm no fussed about getting the engine map 100% cos it's coming out soon anyway..
I don't want bollix the sensor or ECU as I don't know what their input/output impedences are.. plus the voltages involved may not be enough to turn a diode on, anyhow - good suggestion, though I plan to get a laptop asap so I'm not fussed about rigging up something too clever.
oh, and I had the rich/lean bit round the wrong way too - 0.85-0.9 is rich.
Al - I've got the WR that SBD recommend - a Bosch four wire one (it's got the ground on a wire as opposed to using the chassis through the casing)
It's not been setup properely - all I've done is enable Lambda in the map, not touched any of the other settings for it - and there's loads - I don't think the ECU is actually using it much, as I didn't notice any difference.
Andy, ah ok - cheers, - any idea what voltage is lambda 1 then ?