I am interested in any hard test data on engine horsepower from an engine tested with wet exhaust and then tested without wet exhaust.

ttt

maybe 1-2 HP ,,u will not feel it on a stock or mild engine !!!!!

The huge HP engines can't run wey because of reversion problems...

The dry ones are just LOUD and BAD A$$ sounding..lol

How much do you think for a ~600hp NA engine?

Like i said, if u go wet...u need to watch the reversion issue,,,but HP ....u will not feel it !!!!!!!

Im searching for some data Ive seen.....

a good set of long tube headers is typically good for 25HP or more in an NA situation.

Its going to depend on a lot on the build, and exhaust manifold/header itself as well as the wet dry part.

High overlap long duration cams wil respond better to dry and be affected more.

The further downstream you mix- the less loss usually the realize.

Im looking, and should have bookmarked the data I looked at.

Uncle Dave

Thanks Uncle Dave,

I just need some hard/real numbers and the configuration/hp they came from. I'm talking ball park.

Thanks

I did not say anything about headers,,,just wet manifold to dry manifold exhaust..u cant compare headers to manifold unless its a SM HT 3 or similar !!!!

I brought it up so the poster would know there are differences between the two.

Some guys arent aware of the drastic differences in pricing or effectiveness.


UD

I am running Dana Torque Flow exhaust manifolds with #5 risers on a heavily modified 496 . These manifilds test within a couple of hp to the CMI sport tube headers with wet exhaust.