rollex Member 683 Member For: 10y 5m 1d Gender: Male Location: Australia Posted 10/08/15 07:41 AM Author Share Posted 10/08/15 07:41 AM Yeah I understand what it is. Someone above suggested they are a pain in the ass but you only need 1 sensor then and don't need a second bung in the dump pipe if I use one so I'm questioning why it is a pain in the ass as it seems there are some definite benefits.I'm assuming they have two outputs, the full wideband output and the narrowband low/high output so the PCM gets it's narrowband signal whilst you can simultaneously use the wideband. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 1m 17d Gender: Male Location: Perth Posted 10/08/15 07:46 AM Share Posted 10/08/15 07:46 AM Don't bother with the simulated wide band unless you have an overwhelming desire to run lean cruise.Effort v reward a second bung added (usually included with the wideband) is the way to go.Standalone for monitoring in car and logging,stock narrow band to report back to the pcm.Sensor life is really dependant on location and tuning. Expect 2 to 3 years at a minimum. Link to comment Share on other sites More sharing options...
rollex Member 683 Member For: 10y 5m 1d Gender: Male Location: Australia Posted 10/08/15 08:06 AM Author Share Posted 10/08/15 08:06 AM How much of an improvement to economy could I expect by implementing lean cruise via offsetting the voltage?Could you effectively "hack" lean cruise by adding a sensor voltage offset at cruise rpm ? Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 1m 17d Gender: Male Location: Perth Posted 10/08/15 08:16 AM Share Posted 10/08/15 08:16 AM Tony has played with it but I've never bothered. Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 7m 10d Gender: Male Posted 10/08/15 10:58 AM Share Posted 10/08/15 10:58 AM That table you bought up does not work from memory. It wont allow you to adjust. Don't know why.The narrow band simulation is possible. If you got your head around it properly I think you could calibrate it so the ECU likes it. But ii did do some weird stuff at times and another guy who had a stab at it also had the ECU trip out on him like it did me. But because you have so much on your plate ATM leave that till later when you understand it all a bit better. Meanwhile just do the extra bung for wideband.These new widebands last a very long time. You are probably thinking of the old bosch wideband sensors which only lasted a few hundred hours. The new ones last like normal O2 sensors.Originally I wanted to run the simulation narrowband output on the Innovate LC1 to introduce and offset to run leaner on cruise. Yet it can be done and works but as I said I never nutted it out completely but if you put you head to it you might be able to.To run leaner I just shut off the narrowband and then adjusted the fuel base table lambda to get to where I wanted. Mine is about 15.5:1 on cruise. Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,751 Member For: 13y 3m 19d Posted 10/08/15 11:03 AM Share Posted 10/08/15 11:03 AM On gas or e85 equivalent tt? Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 7m 10d Gender: Male Posted 10/08/15 11:08 AM Share Posted 10/08/15 11:08 AM (edited) In this case BP98 but E85 you can run heaps leaner I found. With tuning many guys just stick with quoting petrol fuel ratios even when running E85. Some like just quoting lambda. It is what suits you. Edited 10/08/15 11:09 AM by turbotrana Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,751 Member For: 13y 3m 19d Posted 10/08/15 11:21 AM Share Posted 10/08/15 11:21 AM Yeah right. So under light cruise on e85 you can be out towards 17:1? Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 1m 10d Posted 10/08/15 11:51 AM Share Posted 10/08/15 11:51 AM I've been out to 16.9-17 on e85 uses about 9lt/100km. I also have no O2 correction set on I just tune the map to best without lean misfire. 1 Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 7m 10d Gender: Male Posted 10/08/15 12:03 PM Share Posted 10/08/15 12:03 PM I found E85 behaves differently to BP98. With BP98 you get the normal lean missfire anywhere from 16+:1 dependening on engine some engines 17:1+.With E85 there seems to be no lean missfire but it just starts to loose power. So yes, even 20:1 but less power.I didn't play with it that long but definately behaves differently. I thought to myself the OEM have got it wrong with tuning to lambda on cruise with E85.Sometimes I thought my lambda meter was playing with my mind but certainly can run leaner . Link to comment Share on other sites More sharing options...
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