I just bought an Iridium Drift Air/Fuel guage from luke on the zcentre.

 

Can anyone tell me if i can take a reading straight from the ECU or will i

likely need a wideband convertor ?

 

Plan is to make a switch so i can read both the O2 Sensors.

 

Heres a link to the guage I bought :

 

http://www.zcentre.co.uk/index.php?page=shop.product_details&flypage=flypage.pbv.tpl&product_id=159&category_id=73&option=com_virtuemart&Itemid=7

Should be able to take it direct from the ECU o2 signals mate.

Great,

 

rather than have two guages i'm gonna take a reading from both sensors on the ecu

and make a simple switch to go between them.

Great,

 

rather than have two guages i'm gonna take a reading from both sensors on the ecu

and make a simple switch to go between them.

 

That's what I did mate, easy to switch between the banks then. I used an on-off-on three way toggle.

Just don't rely on them for any accurate readings except around idle. Narrowband O2 sensors are next to useless much away from stoichiometric mixtures.

If i replace the o2 sensors with better ones would that make a differance !

 

Will the ecu read wideband senders ?

I have one of these in the V8:

 

http://www.aemelectronics.com/wideband-air-fuel-systems-15/digital-wideband-air-fuel-gauge-25/

 

Absolutely spot on for what i used it for which was tuning the mixture. Very quick to wake up and very accurate for about the £225 mark

I just bought mine to fill a hole really, not going to be using it for tuning.

If i replace the o2 sensors with better ones would that make a differance !

 

Will the ecu read wideband senders ?

 

You could put 2 wideband units in there then if they have simulated narrowband outputs then the ECU could use them but costs £££.

To be honest its not worth the hassle if you're not going to use it for tuning given the cost. The ECU does not use the sensors for much anyway, just looks at mixture under lean conditions and calculates a correction which is then applied across the operating range. Not full closed loop control or anything.

If you want a decent system then techedge are good. I'd steer clear of innovate, they are not very accurate and the outputs are sensitive, AEM is OK but does not have a differential output which is a bit rubbish for the price they charge.

As it is, what you have will give broad indication and should be resonably repeatable, just not accurate once away from 14.7:1