Based on dyno graphs you will need a JB4 on a 335i to match power output of a stock 340i. My wife has a xdrive 335 and I have a new 340; only chance the 335 has is out of the hole with xdrive. I don't know how long the 335 could stay ahead though.
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- 2022 X3M Comp
- 2021 X5 xDrive 40i
- 2018 F80 M3 (sold)
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