Have just fitted the above and wondered what other peoples are showing. Mine seems to light up the red led on light throttle and when i begin to accelerate. A few seconds later it begins to change to yellow, then green, then to blue where it stays until I change gear and then it starts again from red through to blue. Sorry if I'm being a muppet but is this how it should be? :confused:
Have had a few emissions problems during mot so just wanted to check this is what other people get and that my lambda isn't on it's way out

Sounds fine to me. It's only any use on WOT (Wide Open Throttle). If it's blue then the engine is running sufficently rich.

Cheers. I just did a search and found some other threads that say the same so I'm happy now :) Now if I can only get my boost gauge and oil temp gauge working :D