Will a remap give me any better performance than i already have? I also want to get the limiter removed. I've heard of superchips but would it make any difference to a naturally aspirated engine?
Yes it would help. A Eurocharge remap should give you around 520bhp and a lot of extra torque.
There is a Eurocharge agent in Poole who is a forum member and could give you pricing and all the info you need. He can do it at your home or workplace as well.
The members username here is boyt. Hopefully he will see this post and contact you through the forum. I don't have his mobile # but he works on the Creekmore Ind Est at the MB van centre.