Quote:
Originally Posted by mafrystbeamr
Fascinating thread this. Is tim_s still about? I'd be very interested in this ECU swap. Does it require the 3-stage manifold to get the best results?
I couldn't find a 330ci and being in a rush to swap the old car ended up with a 57-plate, 2008 registered 325i 2-door, thinking as it was a 3L it'd still be about the same power as the 330ci. Now I find even though it's the same (N53?) engine it doesn't have the power of the 330ci at all. So I'd like to make it up if at all possible.
Is mine an E92 because it's a 2-door and the E90 just means it's the 4-door version?
Sorry for all the questions!
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330ci was the E46 coupe to differentiate it from the 330i saloon.
For the E9x series they're all 330i (or 325i) but the E90 is the saloon, E91 touring, E92 coupe, E93 convertible.
Without the 3-stage manifold you'll struggle to get the engine breathing correctly throughout the rev-range. The swapped ECU won't be a happy bunny.
The best performance gain for your buck that you can get for the N53 is walnut blasting the inlets. That'll clear out all the crud and get it breathing properly again.