If you like torque and especially power (2 different but related things) another consideration is the E500 which is actually cheaper to purchase than a CDI. Depending on how long you keep it and how much you drive it you might come out ahead financially with the E500.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL