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Technical Topics B48 4-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications 320i vs 330i

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      07-29-2020, 01:22 PM   #1
CarlosM4
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320i vs 330i

What is the difference in the B48 engine in the 330i vs 320i?

Interested as I bought a 320i M Sport and plan to tune it into 330i power.
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      07-29-2020, 08:17 PM   #2
bquatt
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Quote:
Originally Posted by christians g20 View Post
The G20 330i is a B46 2.0 L Twin turbocharged 4 cylinder engine. The 320i is a 2.0 TwinScroll 4 cylinder. The twin scroll turbo is a single turbo powered from pairs of cylinders in an alternating sequence from two exhaust down tubes.
Thatís not the case - the 320i is a detuned version of the 330iís which is a twin-scroll. I believe that the 320i version also has weaker pistons and internals. Or so I was told by a tuner in Holland. Regardless, imagine the 320i would have no issue running stock 330 like power.
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