Quote:
Originally Posted by Jim B
Yes, a LOT more. F8x cars have much larger radiators, oil coolers, and water cooled intercoolers which F3x cars don't have. you'd probably be money ahead to buy an M3 rather than modding a 340i to get it up to an F8x level of performance, and you'll get a lot more back when you trade it in a or sell it.
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If I am not mistaken, the B58 in the 340i has a air-to-liquid intercooler.