Wideband Lambda Sensor - Advice

[robp]

I currently have a MBE967 ECU with a narrowband lambda.  Planning to upgrade to a wideband set up mainly to check how the fuelling and A/F ratio etc.  Question is which kit do I go for?  Anyone run a wideband?

Kits I've seen are Techedge (http://wbo2.com/2j/default.htm)and Innovate (http://www.innovatemotorsports.com/index.html).  What I want is:
(1) Be able to connect to my MBE ECU (need to route the lambda to it).
(2) Logging (need A/F ratio, TPS and RPM as a minimum).
(3) Dash display is a nice to have but not essential.

I currently run lambda compensation below 2000rpm with +/- 5%.  Not necessarily going to run closed loop with the wideband set up.  Just want to gather data initially and then decide upon fuel compensation later when I see how everything is running.

Why bother at all, I hear you say.  Well, you can argue that if my fuelling is set up correctly to start with and I don't change anything then why do I need to run a wideband.  Fair point.  Well I want to know whats going on.  I run two different exhaust systems depending if it MOT time or trackday noise test time.  Be nice to tweek the fuel mapping for emissions but mainly to ensure I'm not running lean at full throttle, etc.

After some advice at the moment   

['The Gaffer']

Wish I could help Rob but you lost me on the first line mate.

Can you ask Adam with the Caterham, he's just bound to know

[YZFMINI]

Dont know how your MBE967 ECU with a narrowband lambda works.
Is it map able and does it read the afr then adjust the fuel mix.
i run a wideband lambda and data logger. so i can see the air fuel ratio and and adjust my fuel map. I have a dyniojet wide band commander.

Yzfmini

[robp]

The MBE has a fuel compensation map linked to the lambda. Therefore, if the lambda says A/F out then the value in the compensation map is added to the base fuel map.  Like I say, only active below 2000rpm.  Of course, it's a little crude.  That's why I'm interested in moving towards the wideband.