Me7.5 dilemma!

[jonrandom]

Can buy a wideband lambda/gauge as I just got advised to buy and have bought. The innovate mtx-l, nice bit of kit. Got a AGU so just narrow band but with a big turbo so having afr gauge will really help for mapping and prempting any future fuel problems.

Much easier and better to have already tho 

[Prawny]

narrow band lambda is slow to react and less accurate,

narrowband runs on 0-1v output, whereas wideband runs on 0-5v output. Narrowband tends to be only accurate just around or either side of stoich (14.7:1 AFR) and beyond this it's accuracy is poor.

In a narrowband car, on idle and cruise fuelling will be controlled by the lambda sensor in closed loop, but on full throttle the sensor is ignored and it runs open loop with no input from the sensor.

If something goes wrong at WOT in a narrowband car, the car knows very little about it, and will continue to kill itself.

on a wideband car, the lambda is still active at WOT, and if it sees fuel trims going astray it will try and fix them, or pull things back to save itself

[golfyste]

^^^ that's what I meant 

[rio_gti]

narrow band lambda is slow to react and less accurate,

narrowband runs on 0-1v output, whereas wideband runs on 0-5v output. Narrowband tends to be only accurate just around or either side of stoich (14.7:1 AFR) and beyond this it's accuracy is poor.

In a narrowband car, on idle and cruise fuelling will be controlled by the lambda sensor in closed loop, but on full throttle the sensor is ignored and it runs open loop with no input from the sensor.

If something goes wrong at WOT in a narrowband car, the car knows very little about it, and will continue to kill itself.

on a wideband car, the lambda is still active at WOT, and if it sees fuel trims going astray it will try and fix them, or pull things back to save itself

thanks thats just explained it!!!

is it worth having for a daily that will only have the occasional blap now and then?
i drive like a granny most of the time