A3 downpipe question

Hi guys, hopefully a quick and easy question.
i own an a3 2010 1.4tfsi (125bhp model) and I am trying to work out if a downpipe will actually be benefitial.

currently the car has these mods : forge bov adapter, vtech custom tune, custom made cat back exhaust and eddy power carbon fibre cai.

im trying to source one and only find one from supersprint.i am still unsure if it will even give me any power gains or if my other brands make such a downpipe.

if you guys have any advise or can offer any assistance that would be greatly appreciated

Bump, does no one know anything about this?

i Will be remapping the car once i have a downpipe added.
I already have a CAI, custom made exhaust and a stage 1 remap.... just need that down pipe to release the inner beast.

Any brands you can think of that may have one other then supersprint who are really expensive.