I see no mention of a PCV and catch can needing to be upgraded on the Vargas site, or in the installation kit they sell.
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2010|335i| LMB|E92|6MT|MSport|Logic7| 335is Clutch|AE Performance|BMS|Walbro|VRSF 7"| 149.7mph NFZ AZ 1/2mi
1992|Pontiac Firebird|Mild 355ci|T56|
-I will look on your treasures, gypsy. Is this understood?-
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