Thread: Avcs questions
View Single Post
Old 12-07-2012, 12:47 PM   #24
Element Tuning
Former Vendor
Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
673 WHP Element
Tuning Pro Comp Engine


It's just the wording that has people confused about the cam timing differences. The bottom line is that the STi AVCS cam/sprocket will have less advance at resting state compared to the WRX cam/sprocket. The reason they do this on the STi is so you don't get piston to valve contact when you advance the intake cam timing. But because you can advance the intake cam timing you can restore the lost compression.

Phil Grabow
* Registered users of the site do not see these ads.
Element Tuning is offline   Reply With Quote