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Originally Posted by mkinley
I phoned DMS as well and guy who was very good told me that they alter the software in the car so that the fuel amount, turbo pressure and whole host of other technical items are changed to increase performance. An engineer comes to your car and alters the car anywhere in UK for £595 + VAT.
He said the performance will be close to 330d from the 320d when changed.
They will also put your car 'back' to how it was Free of Charge if you want (e.g. end of lease).
I understand that the 'bolt on' devices just alter the fual quantity that the ECU is telling the common rail to give so are much cruder in how they work in comparison.
Tempting - but a lot of cash
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Yep! I think you have summed it all up nicely there......at half the price I think I'd go for it........
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