318ti.org forum - View Single Post - has any one done: port polished heads on e36

**xxxJohnBoyxxx** · 11-01-2010, 11:34 AM

You can gain 6%-7% increase in flow NOT HP by porting the heads. This work needs to be done by someone who knows exactly what they are doing or the head will be ruined.

John S

11-01-2010, 11:34 AM	#2
xxxJohnBoyxxx Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 iTrader: (1) Photo Gallery	You can gain 6%-7% increase in flow *NOT HP* by porting the heads. This work needs to be done by someone who knows exactly what they are doing or the head will be ruined. John S