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it all relative
there are so many veriables to port and polish, most good port and polish as a stand alone mod wont make a ton of ponies especially in a import. its all about balance( i sound like a karate instructor) no one componet of your top end(or bottom for that matter) should be weaker then the rest, all your horse power come from the top end so good head work is allways a must: Some basics to remember port match both intake mani and headers any larger then their openings is a waste, allways have the exhuast polished smooth and gen the intake likes swirls, oversized stainless valves are a good up grade, with stiffer titanium springs, guides etc. but too large a valve can cuase shrouding and actually rob you of power. a good multi angle valve job is recomended. cheap trick is to index your plugs (real easy to do when the head is out), cam is the conductor of this orchestra and also your starting point. you can go on and on, basically what om trying to get at is do it do it right, pick peoples brain do your homework, and make everthing match. if your not going to change your injection find out how much flow it can put out and then start amtching everything to those numbers
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