**Stock Manifold porting debate**
#1
**Stock Manifold porting debate**
I am here with a friend of mine trying to tell me that a ported/coated exhaust manifold would not benefit me in anyway without porting the head. Hey guys give him the details.
Does anyone have a ported/coated exhaust manifold and some specs to prove to him that it makes some gains on our Evos?
What kind of gains have people seen with a stock ported/coated exhaust manifold
I would like everyone in on this. Hit me up
Does anyone have a ported/coated exhaust manifold and some specs to prove to him that it makes some gains on our Evos?
What kind of gains have people seen with a stock ported/coated exhaust manifold
I would like everyone in on this. Hit me up
Last edited by TKEVO; Feb 18, 2008 at 08:41 AM. Reason: added info
#2
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you wouldnt see the true benifits of a ported head until you are running bigger cams on a bigger turbo, so there for your head is not your limiting factor right now, yes you will have small increases by porting your exhaust manifold, probably not to noticable but you will pick up a few ponies, do to the path of the exhaust flow being less restricted, the easier it flows the better hope this helps, you got your cams yet??
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A ported exhaust mani is good for about 5-10whp at your mod level... and NO you do not need to get your head ported to see the difference..... Your friend needs to do some research... if you upgrade to a bigger turbo and bigger cams then a ported head will help..