blm70 wrote:I did and he acknowledged the fact that these boxes can handle up to 850+Nm etc. Chap then pointed out that the torque converters they use are reconditioned units they buy in i.e. this would be the weak link so to speak, and that whilst these TC's are fine with non-modified cars, once you start mapping then it becomes a lottery as to whether it will hold or not.
He showed me the inside of one where there is only one friction band in place to handle the torque. Later model 'boxes have more bands and he pointed to the Mercedes boxes that are apparently much more robust because of this.
Does this sound like b/s or does he have a point?
I understand MRC's approach removes any doubt by simply replacing the 'box with an exchange unit direct from Audi, although it's not a cheap option which is why many people consider getting theirs rebuilt (not cheap either.)
I have considered the updated components route, although I'm wary of it still not fixing the issue, as Murphy's Law would no doubt apply. At least the exchange unit option comes with a 2 year warranty.
Just doing the math - going from standard torque of 413lb/ft to (potentially) 650lb/ft is almost a 40% increase. Whilst mechanical components do have headroom, this sounds like a big ask...
Anyway, it's running fine at present and MRC have recently carried out a flush and ATF change, so for now I'll just enjoy it but I do see an exchange 'box on the horizon some time this year...
So they are admitting something isn't quite right, but not doing anything about it?
Regardless of what other boxes have, these boxes can take the power in their standard form. A rebuild *SHOULD* take it to the same standard form, thus no slipping when mapped.
If it's just the TC slipping, is it worth updating the TC?
Really, they should be sorting that too....