Ok cool how do they go after a remap?
300+bhp 
Abit optimistic.
expect for stage 1 one, around 270bhp before you want to add exhaust and intake to hit 280's.
300 bhp is only achievable with exhaust/intake on stage2.
stage 2+ brings up 330+bhp.
Have a look at Superchips website, they are quoting 307bhp for a stage 1, 321bhp for a stage 2 and 337bhp at stage 3.
And their Rolling road said my car standard was 255bhp

. Their Rollers are quite famous for this very reason chap.
VW quote 230 bhp, and mine runs precisely that on Dyno dynamics when she's stock.
I wasted my money when i went on their rollers.
The Customer care though, i cant rate high enough.
