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By
Sajeev Mehta on January 29, 2013

Zack writes:
Hi Sajeev,
I’ve been following a series of discussion on a MK3 Ford Focus forum; in particular I’ve been following the technical discussion about how to squeeze more power from the MK3′s new 2.0 GDI motor. Of course, this involves talk of CAIs, Cat-deletes (inadvisable), and free flow exhaust. One of the more curious things to emerge is… (Read More…)
By
Sajeev Mehta on July 25, 2012

Kurt asks:
I’ve heard from maintenance shops and oil additive producers that DI engines, especially Audi and BMW, have severe problems with carbon buildup in their valve systems. Might be good to chat about this and also poll readers to see if other vehicles have the same issue. Thank you. (Read More…)
By
Andrew Bell on May 3, 2012

“Ask an Engineer” is hosted by Andrew Bell, a mechanical engineer and car enthusiast. Andrew has his MASc in Mechanical Engineering from the University of Toronto, and has worked on Formula SAE teams, as well as alternative fuel technologies in Denmark and Canada. Andrew’s column will explore engineering topics in the most accessible manner possible.
(Read More…)
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