original manifold or headers May 10, 2020 11:11AM
Do you think that making headers in a Pro Farm class can help compare performance to an original manifold?

Re: original manifold or headers May 11, 2020 12:10PM
Myself i have used minifolds and headers on the same engine with know other changes and in the seat of my pants could never fill know difference although the headers could have made power just not enough to notice .Boost pressure remained the same on bothe but i stand to be corrected


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