D5 auto remapping.. worth it ..?

[AndysR]

Just a thought, has anyone remapped a D5 auto (C30/S40/V50) before? Not that it’s not already nippy I was just wondering if anyone had any experiences of mapping one and whether it was worth it or not?

[barrybritcher]

there's only one rule:

If it has a turbo remap it, no turbo - not worth it.

[3rk5]

I´m just wondering if the gearbox can take it? I´ve read somewhere that it´s pretty much at the limit with the power the D5 engine makes from factory.

[Bonefishblues]

Doesn't it torque limit in 1st and 2nd IIRC?

[T5R92011]

I think it's 350Nm in 1st and 2nd and 400Nm for the rest.

Though I could be confusing that with the S60R

[dme123]

Originally Posted by T5R92011

I think it's 350Nm in 1st and 2nd and 400Nm for the rest.

Though I could be confusing that with the S60R

The D5 is detuned to a max of no more than 350NM in all gears in the C1 platform cars (C70/S40/V50/C30) with the AW 5 speed automatic gearbox as that is the specified maximum capacity for the box. It's 400NM in the manual cars.

There are also additional torque limits in 1st and 2nd gears to (from memory) about 250NM. Hilariously, plenty of remappers will offer to remove these limits.

I would be very wary of remapping it, particularly if you're going to put some miles on it. Most of the "it'll be FINE" stories are from people covering low mileages, I did about 100K in an MTE remapped manual D5 and managed to eat three clutches, a gearbox, and both driveshafts.

Contary to a lot of ill informed opinions the OEMs know *exactly* what they are doing when they specify not just upper torque limits for components but also transients, torque swings, vibration specs etc. If you want long life and low maintenance leave it as it is, if you're shedding it and want to rag it to death then go for it and enjoy it.