croft and broken turbo

[DaveP]

Hope it comes back fully sorted mate...I actually thought the replacement would be closer to 5k, it's actually got me thinking about warranty costs vs replacement turbo costs now !

[DavidT]

Steve,

How soon after the FMIC install did the turbo fail? and was the system pressure tested properly ?

Worth checking because if you had a leak it could have contributed to the turbo failure. The new ones may not last long either, if the issue still exists.


David

[stevesmee]

turbo failure occurred at 750 miles after FMIC fitted! i will check with QST tommorrow about pressure test, i'm guessing that i will have some sort of warranty on the new turbo's, i will check that as well, am i correct in expecting a warranty?

steve

[stevesmee]

Hope it comes back fully sorted mate...I actually thought the replacement would be closer to 5k, it's actually got me thinking about warranty costs vs replacement turbo costs now !




i was quoted £4800 + vat by audi garage after they told me i was not covered by warranty! i didn't expect them to really, considering i did not have current warranty (due to audi current warranty issues), they did recover me from croft to canterbury as goodwill, i can't knock them for that.

steve

[DavidT]

Boost leaks are a (the?) biggest factor in turbo failure. The Standard RS4 pipework is excellent, boost leaks are rare IMHO, I'd want to be assured by the supplier that this failure was not of their making and that all will be well with the new turbos.

[bjacks]

Is that because the turbos are working harder to produce the same required boost due to the leak?
Is there any way a leak could be diagnosed via software? I know you can log requested/actual boost etc, but can you see how fast the turbos are spinning to see if they are working harder than they should be?

Cheers lads,

Ben

[DavidT]

Is that because the turbos are working harder to produce the same required boost due to the leak?

Yes, that's exactly why. If they work outside their operating tolerances too much for too long, they can be damaged.

Is there any way a leak could be diagnosed via software? I know you can log requested/actual boost etc, but can you see how fast the turbos are spinning to see if they are working harder than they should be?

Not sure to be honest, hopefully someone confirm.

Best way is a pressure test.

[Dippy]

MAF would be higher than normal. However unless you have already logged this or are very sure of what MAF to expect, it will be difficult to determine. You could get some figures from other members and compare to yours.

[stevesmee]

car now back from qst, new dyno done now producing 517.5 bhp!!!
well pleased. now looking for custom re-map, any suggestions?

[DavidT]

Steve,

Glad you have your motor back. Bhp figure is exceptional.

What did they say about the turbo failure ?

[alastairg]

car now back from qst, new dyno done now producing 517.5 bhp!!!
well pleased. now looking for custom re-map, any suggestions?

MRC tuning