hello everyone i wanted to know if i port the exhaust side of the head. if you can tell a different in power. i also wanted to know if i port my stock intake manifold if that help too. my mods that i have done now are aem sri and 2.50in exhaust no cat or res. and i also deleted my ac and cc and going to do my ps. im aslo looking into geting the ex header and a p12 ecu. thank yall for the time and any info will be greatful.
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The stock exhaust ports are the most restrictive part of the head, so yes, opening them up will help a bit. However, if you don't know what you're doing, I wouldn't suggest trying it yourself (unless you can afford to waste the time, effort, and money... in which case, experiment away!)
The H23A intake manifold would be a better upgrade than attempting to port the F22A1 manifold. However, the P12 ECU isn't great for that manifold, since it has an IAB system (which the P12 does not control.) You could always hook the IAB up to vacuum, or delete it altogether (at the expense of some low end.) Personally, I like the IAB system to work properly... but some don't like it.
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