Its also because Audi doesnt want to make the car daft. Not everyone wants a hatchback with 450 bhp and most would be happy with it in stock form. Me on the other hand is happy with being scared s***less.
Dont be daft. Are you saying that Audi perfected an engine that puts out 450bhp and then de tuned it for no reason at all by 130bhp ?? Its all about reliability, something audi are not good at if you have ever owned a Diesel A3 3.2 A3 A6 and so on..
I agree, yes yes there has been a few teething problems with tuning (misfire etc) but in the end you get a huge increase in performance for not that much money.
no im not saying Audi perfected an engine that puts out 450bhp. im saying you hardly have to 'knock the engine in half' as you say to get another 100 ish bhp out of it. All turbo engine have a lot of extra potential that can be unlocked with a remap- which we all know, and then more so from improving gas flow- intake /TBE /IC , and fueling- fuel pump/injectors.
Its pretty easy to get 360 bhp out of the KO4 2.0T, which no major hardware mods -pistons/rods /turbo/ injectors are all the same.
There no reason you couldnt get 450bhp out of the 2.5 RS engine with standard internals - ie without 'knocking the engine in half' .
How many people on here with Stg2 or stg2+ have engine problems related to tuning? Pretty much none. I dont have any either.
All of the problems with the cars you mentioned can happen to any car and none of them are really tuning related.
Your timing chains, or cracked heads on 2.0PDs, or faulty N75s etc.