I got my remap done on my polo 9n3 1.4 tdi from Revo. They charged me £99 + V.A.T. They had a special offer hence why it was cheap. If you keep an eye out on Revos site they normally do £100 of all there remaps. I got my remap done at GTI International last year as Revo was sponsering the event the offer was on
After the remap i then upgraded my panel filter to a K&N and also the air intake pipe i bought from a pd150 (bigger intake then the normal one)
My car is standard 80 BHP but after the remap i was told its around 110BHP but to be honest with you i cant feel much extra power. But does help on the fuel as i drive quite abit on the motorway. Also do remember these polo 1.4 TDI are only 3 cylinders so not much can be done and even doing a remap can put some strain on the engine. Hence why im looking for a polo 1.9 GT TDI or a skoda fabia VRS