From my understanding you may have a very free flowing exhaust pipe system....
But with a stock head and manifold, you have a very constrictive exhaust system... It all matters what comes first...and last really. You try to maximise flow while also making sure that there is enough back pressure for things to run correctly.
You should find a pretty big jump in just putting on headers. Inliner and I are going to perform a self done porting soon and we should find out how that goes.
But with a stock head and manifold, you have a very constrictive exhaust system... It all matters what comes first...and last really. You try to maximise flow while also making sure that there is enough back pressure for things to run correctly.
You should find a pretty big jump in just putting on headers. Inliner and I are going to perform a self done porting soon and we should find out how that goes.