depends on the brand of chip and the level of tune (level 1, 2 or street, race, etc). the longevity of the turbos also depends on how hard the car was driven. is an inspection by an audi mechanic possible? maybe talk to one and see what he says about the chip. as a personal rule, i try to avoid neuspeed parts. some of their stuff is iffy, the chip especially. ive heard great things about it for vw but others say its not powerful enough (street stage) or too agressive (street/strip i think its called off the top of my head). have you done any research on audi forums? dont forget kbb.com and edmunds.com for prices of parts and stuff. also, luxury cars command luxury prices for parts. ask the dude if hes got another ecu or is willing to return it to stock. was it "adult" driven, 35yo+? or owned by a performance ho? i think the factory recommends the turbos rebuilding at 60k miles...might as well get a more efficient one. sorry, dont have too much experience with pricey cars, but if youve got the spare change, go for it. id love to have one myself, but im poor.