Not lot of VAG engines respond really well to a remap without any other parts. I had a mk4 golf get the 150 and looked into a remap, 260bhp + was quoted by the good tuners such as revo. The latest golf R and gti have been getting gains of up to 70 bhp from just a remap, it's like VW are holding them back but it passes me off that I would have to buy a full system, air filter and then a remap and still get nowhere near these gains.