Jump to content
SAU Community

What Wide Band 02 For Power Fc?

17psi r33

By 17psi r33,
in Engines & Forced Induction

 Share

Recommended Posts

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...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • PranK
      Chris' Toyota Mark ii JZX110

      By PranK · Posted

      This looks great! Awesome to have the 5 speed with an LSD in this. The Recaro's look like SR2's or SR3's. It's a shame they've been retrimmed as they would have looked sweet in their original colours. I think I'd want my agent to be a little more up front and informative too. I've never imported but I reckon it would make me a little nervous, so the more info the better.
    • soviet_merlin
      Duncan's V37.......race car?

      By soviet_merlin · Posted

      Thanks for doing that Duncan! Makes you a good person in my books. We don't get kangaroos or wombats here. But we have bats and it's similar. AFAIK it's often the mums with a baby attached that get hit because they drop lower when starting from a tree. If you hit an animal, check on it. https://www.ifaw.org/au/resources/wildlife-rescue-app An app to get the closest wildlife rescue contact.
    • Murray_Calavera
      Jacks that fit under GTR lips that can reach the subframe?

      By Murray_Calavera · Posted

      My dream is also to have a proper hoist, but I don't think it will ever happen. My quickjack is probably as close as I'll ever get, it really is very good though. 
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      Yeah we keep on in the dailies, it is pretty poor how many animals get hit and the driver leaves without checking....have saved a couple of little ones over the years. Bit of a gruesome job though, pouches generally need to be cut open because they are so tight and often the joey doesn't realise mum is gone so they are still locked onto the teat. I checked the modules in front of the DS wheel where an oil cooler should go.... There is the radar unit - that can go for race use) One of the 2 HX water pumps, the silver cylinder. That needs to be kept but might be able to be relocated But the bad news, the big computer mounted vertically in front of the wheel (blocking any potential air exit) is the electric steering computer. That is required until/unless i do a hydraulic steering conversion, and in CAD based modern car design it is not like I can just pop a big unit like that somewhere else (plus the loom would be too short anywhere else too). So, the passenger side is OK to clear out (just use a smaller washer reservoir, potentially elsewhere), but the DS no beuno
    • Duncan
      Chris' Toyota Mark ii JZX110

      By Duncan · Posted

      Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
×
×
  • Create New...