Quote:
Originally Posted by tonyjh63
I thought one of the big differences between the engines is that the "si" got direct injection, which would account for not only the increased power, but increased fuel efficiency as well?
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The intake mod to get 260HP on this bad boy would be fun. However the problem is whose going to tune your ECU? So this tune would end up costing a fair bit.
However, I wouldn't mind improving the throttle response on the X3 I find it is a bit sluggish unlike the past E46 330XI that was razor sharp on the throttle and once you tap it, it would pick up quite fast.
Anything that can be done on the X3, besides the intake mod for this?