E46Fanatics - View Single Post - Throttle Body Size (post b30 manifold swap)
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Old 06-27-2012, 12:41 AM   #93
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Join Date: Feb 2008
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My Ride: M3 & ZHP
Originally Posted by alexxander.foster View Post
Thats crazy! Hmmm... I wonder why Alpina chose to stick with that anemic throttle body? Maybe its different for FI applications.

I remember watching some 'pimp my ride' knock off video where this guy got his e46 330 boosted. They threw in the HPF kit with all sorts of random performance goodies. One of the things they did was swap out the stock DISA manifold for one off an e36 M52B28. The tech putting it in said that the DISA valve was much better for NA applications, but generally the engines performed significantly better with a standard intake manifold. Perhaps a larger TB is counterproductive in a FI application...
But the B3 3.3 and B3S were both N/A - I am surprised too honestly. You'd think that if a 330 "needs" a bigger TB, a 3.3 liter engine making 50 more hp would need an even larger one.
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