Quote:
Originally Posted by maxman
I have the Cobb tune installed on my 2009 335i with a Helix front mount intercooler and dual intake.
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Prelim schematics in the link. We will be confirming these schematics are correct and testing the HFS-4 on a 335 this week.
http://howertonengineering.com/2012/...54-schematics/