why does the 2.7T motor have such a bitter sweet reputation??
08-22-2004, 01:04 PM
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why does the 2.7T motor have such a bitter sweet reputation??
before i start, let me just say i have an A6 2.7T and i love the thing. its got 43k miles and going strong. havent chipped it but i am thinking about it constantly, lol.
how come anytime you ask anyone outside of the "audi circles" about the 2.7T its always "well with a chip they are fast but those turbos ALWAYS BLOW" is it really true? i mean seriously, how is it that the K03 turbos on the S4 and A6 2.7T have this reputation for blowing no matter WHAT you do...chipped, unchipped....babied, taken to the track, whatever. is it really the general consensus that if you have an S4 or an A6 2.7T, you WILL have to replace turbos at some point? is the failure rate really that high? is there any statistical information anywhere to back this up? has anyone here ever taken a legitimate poll? i really want to chip my A6...granted, i have another 3 years of warranty left (CPO 100k warranty) and i have to admit, all this negativity has sort of scared me. but is it really true? i mean if i was to chip, i wouldnt be racing around every 2 seconds, does a chip, even with normal driving, lead to turbo failure? this all just doesnt make sense. so many of you guys are chipped in the S4 forum, really, have THAT many of you had blown turbos? and this is the 64,000 dollar question, how many of you got away with having the chip and got the turbos replaced under warranty by a dealer who didnt really check for a chip?
how come anytime you ask anyone outside of the "audi circles" about the 2.7T its always "well with a chip they are fast but those turbos ALWAYS BLOW" is it really true? i mean seriously, how is it that the K03 turbos on the S4 and A6 2.7T have this reputation for blowing no matter WHAT you do...chipped, unchipped....babied, taken to the track, whatever. is it really the general consensus that if you have an S4 or an A6 2.7T, you WILL have to replace turbos at some point? is the failure rate really that high? is there any statistical information anywhere to back this up? has anyone here ever taken a legitimate poll? i really want to chip my A6...granted, i have another 3 years of warranty left (CPO 100k warranty) and i have to admit, all this negativity has sort of scared me. but is it really true? i mean if i was to chip, i wouldnt be racing around every 2 seconds, does a chip, even with normal driving, lead to turbo failure? this all just doesnt make sense. so many of you guys are chipped in the S4 forum, really, have THAT many of you had blown turbos? and this is the 64,000 dollar question, how many of you got away with having the chip and got the turbos replaced under warranty by a dealer who didnt really check for a chip?
08-22-2004, 02:19 PM
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it's by design
Any design is a balance. The stock turbos are small for a reason. They most likely sized the turbos as small as possible for minimal lag while still big enough to handle stock hp. When you run them 2 times design pressure the shaft rpm skyrockets. THat and thrust loading is that much more. I have a compressor map program but haven't tried any S4 numbers yet. Heck, if anything, I'd say they're doing great holding up for as long as they do on aggressively chipped cars. That's why I'm going directly from stock to stage 3.
