Laminar flow is when the air flows as a single mass with all the air streams parrallel and laminar. Turbulent flow is when the air is stired and tumbles and bounces around in a tube, like the Zetec Resonance chambers
The engine needs certain mass of air. You can take it down a thin, long and smooth tube as fast laminar flow (Good) or stick on a wider tube, which means the air flows slower and has more chance of becomming turbulent (Bigger TB and MAF)
The 60mm TB and MAF can flow more than enough air for a Zetec up to about 200BHP, then you can start to think about bigger units. Better to get the airflow sorted first
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Mad Moles Mondeo Madness 2L Zetec, Cams, Stage 2 head, Valve work, Powerflow, Unichip, AEM Ram, K&N, Ecotek, 75mm Lower etc.
192 BHP, Faster than a speeding Duratec!
