has anyone ported their stock exhaust manifold? i plan on doing it to my first gen and if i do it to that i will do it to the new one but just wondering if anyone has done it tips and tricks would be great thanks or even pics? i dont wanna spend 500 bucks on a aftermarket one just looking for cheap easy mods

 

no one well i guess i will be the first ill let you guys know how it goes

 

I'm interested - post your results if you can. I've wondered the same thing about the stocker. It isn't as glorious as replacing it with a spiffy new part but function is tops.

 

Just wondering. If changing the size of the manifold / gasket does wonderous things, why wouldn't the million dollar factory engineers design it that way? Also, my understanding is that diesel ex manifolds are clunky to create more heat. Just wondering.

 

The change is in the efficiency of flow. Like in exhaust manifolds and systems for that matter.

The manf can make the airflow supertuned for best performance, but they have neither the time nor the goal to do it that way. Their goal is to put a stocker product out there that works and sell it. The same way they send a diesel out the door that runs lean. The same way they put a regular fuel pump on it and diesel heads supplement. The same way three's only a 34gal tank but haulers add auxiliary. Well, you see what I'm getting at.

 

Probably so. Usually the "inferior" manufacture designs are air quality driven. I guess, like everything in life, there has to be a balance. Performance equals heat, etc., and shorter life, but it also increases fun. A balance.