I think the remap cost me £300 ish
Here’s the link
http://www.jabbasport.com/
Many people recommend them but there are others.
Ibiza Cupra is 160 and 260 ft lbs and they remap to roughly 200 bhp and 310 lbs ft, don’t quote me on that, Google it.
Economy actually improves because you have more torque, that’s if you can drive it sensibly, the torque becomes addictive.
The difference between the 130 and 150 engines is;
The 150 has a bigger turbo, bigger injectors, a front mount intercooler, and less restrictive airbox (may have missed something there)
The bigger turbo obviously takes longer to spool up, so acceleration might not feel any quicker than the 130 (might actually be slower) but once you get going it should be quicker.
One thing to note is, both the 130 and 150 bhp engines pretty much always make more power than stated from the factory.
If you use PD specific oil, it is supposed to cut the chances of cam shaft wear.
Personally I prefer the 130, and many others do to.