12 Comments

  1. If you're losing power after porting then you upset the airflow!! You created turbulence in the flow somewhere. Think about it!!! Absolutely no way you can lose power adding more air through the engine. Unless the flow has been disrupted.

  2. Idk $250 buck was worth my gains intil I can save enough for the MSD. I saw 15 HP all over the entire graph. Also seen 25 tq. Cordes Performance tuned as well. There is always not a spot in the graph where the power or torque were less. All cars are different, right? My C8 intake is not ported.

  3. To be complete honest. I think this is flawed because it’s not test in the same car.

    I have done this very test same day and same car and the lt2 is better mid range and up than lt1 even out of the box. Porting isn’t worth much above that. And we tested against msd same day. Same afr. Same timing. Same everything on the same car.

  4. This is proof that Chevy's engineers still show great efficiency even at the factory level, save your money and buy mods that prove to work on your motor

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