Subaru Enthusiasts Car Club of the Sierras - View Single Post - GrimmSpeed PnP/Thermal Coated Exhaust Manifold

knucklesplitter · 2009-05-18, 06:49 AM

I know of at least one customer who is making 500+awhp (Mustang dyno) and running 11's in the quarter on Grimmspeed's P&P manifold and x-pipe. When my car migrates back to single-scroll this is the direction I am going. The stock manifold is the shortest/quickest path for the exhaust gases to get to the turbo and I think that is a big factor on Subies. And because it is cast (and coatable, and shielded) it has good heat retention. It also has the best "sound" fwiw.

2009-05-18, 06:49 AM	#9
knucklesplitter EJ205 Real Name: Matt Taylor Join Date: Jun 2005 Location: Cousin-Fck, Carolina Posts: 1,475 Wish in one hand and sht in the other...	I know of at least one customer who is making 500+awhp (Mustang dyno) and running 11's in the quarter on Grimmspeed's P&P manifold and x-pipe. When my car migrates back to single-scroll this is the direction I am going. The stock manifold is the shortest/quickest path for the exhaust gases to get to the turbo and I think that is a big factor on Subies. And because it is cast (and coatable, and shielded) it has good heat retention. It also has the best "sound" fwiw.