I need to get myself a fault code reader as every 3 or 4 days the engine management light comes on, but never stores it, I thought it was MAF as performance was crap so got a 2nd hand one off ebay to try it (cost me £1), performance improved and havent had the engine management light on until today. The 2nd hand MAF could be faulty I got a new one on order but if its not that I could do with being able to scan it.

I saw this:


But I wonder if its to complex for what I need?

Maybe I should go for this:


Advise is appreciated