Narrow Or Winde Band?

[gncgray]

Morning all

 

Having big problems tuning my Megasquirt ecu. I`m running a narrowband Lambda but thinking maybe wide would be better.

 

Need some advise please

 

Graham

[Grim]

wide every time! It's almost impossible to tune using a narrowband as all it will tell you is whether 'rich' or 'lean'. A wideband will give you a figure that will tell you how rich or how lean it is.

[Guest dctough]

If you can afford it, go with a wide band. It's been invaluable with helping me getting my engine up and running. I went with Innovate LC-1.

[Guest loopyonion]

Wide band outputs at 0-5v, narrow band acts more like a switch, uses 0-1v output, logarithmic. So, i found with some that 0.9v is lean, 0.97v is rich. Add to this voltage fluctuation in the car, and you have problems for getting correct results. Narrow aren't bad for an early warning, but no good for tuning.

 

Try a 5 wire lambda sensor off a VAG car,

 

http://www.ebay.co.uk/itm/Bosch-wideband-lambda-oxygen-sensor-probe-7057-type-/120793808128?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item1c1fdf3d00

 

This should tie in nice with the megasquirt for real time mapping, or even control of mixture on idle.

 

I use a Innovate LM2 wide band data logger, its stand alone and the sensor clamps on the tailpipe. If your in the area, your welcome to take some readings.

[gncgray]

Cheers guys,

 

Thats a great help, although the I have put a narrowband on it. Thats probably why I cant tune it correctly!!!!

 

 

Graham