Hi, will be running MSnSE and wasn't planning to use a lambda sensor because I dont want the expense or hassle. Will this be ok?

MSnSE will work with no problem at all. I am going to be using MSnSE and a narrow band lambda.

At least with even a narrow band lambda sensor, you'll get an ideal if its running way too rich/or lean before black smoke or stalling gives it away..

New narrow band sensors are about £18 off ebay, surely worth the money when it comes to diagnosing mapping issues..

tak

Put like that then £18 seems a fair price. What do I look for on ebay?
How are they fixed to the exhaust?

Look not to Ebay... but to the bottom of your toolbag when in a scrapyard.. They keep jumping into my bag

Get several from the same type of car, you will probably get a good one amongst them. If not you can always buy a new one later!