It's all spin.
Aragorn has it spot on.
I want 250 from my TQS - i know its gonna cost a couple of grand to get there running on a daily basis, but that's the limit. How many A3's do you see pushing the 250 mark....not many, cos everyone goes S3. It runs the KO3s, blocks only done 68k, with a little love and attention, im hoping it to be a silent sleeper come the summer.
Started with the block, and work up and around it....sensible power dictates a sensible build. Basics done ATM, with Air Filter, Exhaust, Manifold, De-Cat, Plugs, Oil, Upgraded Coils, and Re-Map. "Stage Halfords" as it's know at the garage.
300 bhp is a BIG ask for any car that runs low 200's, and if 300 was your benchmark, then the FMIC, and exhaust would have been on the "to-do" list....not to put a downer on your build, cos i get the verbal stick cos of my poor mans S3 but look at Prawns Car - it's a 300 ish BHP track car....can you really run 300bhp daily?