turbo upgrades on 03 B6 A4?
but seems like nobody has modded anything past an 02
and there is always the worry that even though it fits the golf, it wont really fit the audi
The main issue is the B6 engine is far weaker from factory than what was supplied in B5 cars.
Main differences are Caste Crank instead of forged, and Thin Conrods and small wrist pins.
General concensus is b6 engine is good to 290-300hp mark.
AWE tuning has been developing their kit for over a year now, and is about to be released with 290-300 hp levels.
Anything more than that, you are looking at a engine rebuild using far stronger parts.
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