Quote:
Originally Posted by BMW86
It sounds like the 135i and the Evo X are both fairly detuned from factory because they are both capable of handling so much extra power from a simple tune. Interesting.
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For the 135i it surely is. From what I have heard - from a reliable source - the 3TT engine putted out easely 400BHP, without any pain. Combine this with some good suspension tweeks and you are immediatly in the M3 region. So BMW detuned the whole package.
