Wideband 02 sensors

I don't know whether you guys have heard of these but a friend of mine recently fitted one to his 1990 SW20 N/A with some success.
As you know when these cars are put on a dyno the air/fuel ratio tends to start off at an ideal 14.5 approx. and as revs increase out to the maximum power reading the a/f ratio normally richens to around 11.5 which is certainly not ideal for a n/a.
Apparently the sensor can be programmed to keep the a/f ratio at around 14.5 right across the power band.

My mate's car is virtually standard apart from an aftermarket programmable computer and prior to this mod it was dynoed at around 97KW ATW which is quite good for a 1990 n/a.
After the sensor was fitted power increased to around 105KW ATW which does not sound much but there are also other benefits such as a happier motor and better fuel consumption.

I think this sensor costs around $60 to $100 depending on the brand + tuning. It would possibly be also beneficial to turbos however I think they need to run richer at the higher end of the powerband.

you cant program the sensor to keep the AF ratio at a certain level..

The sensor just reads the AFR, the ECU needs to be tuned to get the target AFR.

Your sensor wont give you any power EVER it just reads what is happening - it does not make any changes..

Think of it as sticking a thermometer in your fridge, you now know your fridge is 3° but I sure as poo poo wouldn't expect my fridge to now hold 4° all the time and have 1/3 the power consumption..

^ problem with that is

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$60 to $100 depending on the brand + tuning

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Who the hell tuned it!?

What sort of ecu does ur mate have?

Yes the programmable ECU will allow it to hold whatever AF wherever you wanted.

the Wideband o2 sensor just measures AF.

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Originally posted by MR2QIK

Wiz....Please buy a Gen3 turbo MR2 already. Will happily help you squeeze a lot more than an extra 8rwkw out of it [}:)]

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Ha-ha---ok Jason. Perhaps you can talk the little woman out of murdering me if I do.

I can see the headlines now---'well known MR2 enthusiast found dead across blood soaked driver's seat of MR2 turbo, it is not considered suicide at this stage'.

whipped