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What Wide Band 02 For Power Fc?

17psi r33

By 17psi r33,
in Engines & Forced Induction

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gotRICE? Veteran

gotRICE?

Posted
Posted

well good to see all the feed back. dont realy think i need one now as you only use you narrow or wide band to tune when off throttle (closed loop) when wide open throttle the fc refers back to the tune map, so cant see the point of installing one, and since they tune my care with a wide band sensor as im sure your all aware (as i wasnt), its really no point, correct me if im wrong which i guess i may be as this is just what my tuner has said. i was under the impression the powerfc was always monitoring the narrow band 02 even on full throttle and as a narrow band will only show rich or lean, not how rich or how lean that it may aid my performance on full throttle by installing a wie band 02 sensor giving more accurate a/f ratio to the power fc.

Widebands are great for road tuning. I dont know if you had yours rad tuned as well as dyno tuned, but obviously you cannot simulate road conditions on a dyno.

I have an LC1 permanently installed in my R33, and myself and Lithium have spent hours perfecting the tune, in conjunction with a knock sensor, on the road after it was dyno tuned. Youd be surprized how many zones the dyno cant touch compared to real world conditions. Makes the car so much more enjoyable to drive when the AFRs and timing are spot on in all conditions,

I noticed the PFC doesnt support it, witch is quite poo, but mine is wired directly into my Link G4, and you can also set it up to target an AFR at set KPA's. So it will self learn and adjusts the map as it needs to for uber economy. Then when you go outside the set KPA it will revert back to the set fuel and ignition maps. Quite clever. And so far its proving quite good :)

I think our next step is to have a play with throttle position tuning rather than KPA. The stock turbo breaches the KPA we have set (based on being sensible) with the slightest touch. So it is less economical than it should/could be if it had a larger turbo that took more throttle to breach the set KPA.

JonnoHR31 Grand Master

JonnoHR31

Posted
Posted

thread revival, I have PFC and running with o2 sensors switched off as they are outputting weird values (crap)

I have aem uego wideband kit capable to supplying 0-5v narrowband signal which I was thinking of hooking up as input into PFC

will I need to splice the input into PFC due to running factory twin o2 sensor

yer you can do this with it spliced in. its not 0-5v though, narrowband is 0-1v, 0 being lean, 1 being rich and .5v is stoich. even if the tune is good, one advantage of using the wideband to simulate a narrowband is you can tune the map to be good everywhere (say around 15:1 on cruise) then you could set the wideband to put out .5v at ~16:1 and set the ecu to only use the signal during very light load cruising. the benefits might be minute but it'd give you slighly more economical cruising.

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

Widebands are great for road tuning. I dont know if you had yours rad tuned as well as dyno tuned, but obviously you cannot simulate road conditions on a dyno.

I have an LC1 permanently installed in my R33, and myself and Lithium have spent hours perfecting the tune, in conjunction with a knock sensor, on the road after it was dyno tuned. Youd be surprized how many zones the dyno cant touch compared to real world conditions. Makes the car so much more enjoyable to drive when the AFRs and timing are spot on in all conditions,

how did you find the best timing for cruise during road tuning?

  • 12 years later...

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