Quote:
Originally Posted by Rom3n
120ft/lb added tq would be close to 400 ft/lb and is not possible with a software flash and pump fuel you would need a very agressive/dangerous tune with race fuel and other mods to the car to get anywhere close. Are you sure you got your numbers right ? Also if this was true you would have exceeded the tq rating of the DCT transmission and put yourself at risk of a major repair bill. To correctly raise the power on a DCT car you also need to re-write the DCT software.
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Suggest spend some time in a 135i/335i/535i forum that discusses tuning the N-54 mill. No argument on exceeding the torque rating of the DCT - it's an area where tuners will test BMW's penchant for under-rating its specs. But a number of tuners have gotten this engine into the 420 lb-ft range with piggybacks (JB; AA) and with direct firmware modification ( a la Dinan), and this with normal fuel etc. As a Dinan dealer said to me one time about the N-54 engine: "they sure left a lot of horsepower on the table..."