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Originally Posted by WalkinKrookd
We both have manuals. From my understanding a gasket match is similar to port and polish but not as extreme. They say it generally adds 15-20hp. So is a PCM like an ECU or are they different?
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They are the same thing but different car mfg call them different things for different years. b4 95 they were ECM but then became PCMs. I think you mean match porting which is where the intake port and manifold are made to be as seamless as possible so it doesn't disrupt the airflow. The same for the exhaust side. the intake port is usually a little smaller than the appropriate manifold.