Ecu upgrade?

[l6rth]

Is this a better idea than a mark Adams chip? I presume this makes the car mappable? Has anyone got any experiences or better ideas that don't cost ££££££

[l6rth]

Anyone heard of or used this guy? http://www.megasquirtuk.co.uk. Site looks abit cheap and so do the prices. Not sure if that's good or bad.