Lambda sensor maybe?

I am suspicious that I am lean through the top end - 4500rpm and up, and was looking for a way to check that without having to go to a dyno.

I reckon it might be a bit tricky that way,but not impossible.

It is a pretty well designed bit of gear and works quite well just as intended.

Even an old one should work fine, try it out static and see what you think ,you might be happy with it just like that.

There are a few on Ebay at the mo but they are either 40EUR or 30 year old "only used twice" looking like they are there as collectors items rather than useable.

Can you use them at revs & under load?

My plan was to hook up a digital camera under the bonnet & go for a run, (possibly at night to make sure you can see it) and tune based on that, rather than just static revving.

What do you reckon?

I have used one for about 10 years,I reckon its a good tool.

I got mine at Cash Converters, but I think you could get one posted out from the UK without much drama.

It's a bit of an old school bit of gear, but seems like a sound theory- see through plug so you can tune based on the colour of the flame in the cylinder)
has anyone here used one?
Are they any good?
Can you get them in Australia?