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I have read the entire post. Notice that pages in they are still bumping their topic but have nothing to show for it and no parts that anyone can buy or test?
My best example is KN intakes. They claim "13 HP" just from bolting it on. Time and time again we tested just intakes on cars from subarus, to audis, to camaros, to supras. The intake alone got the car like +1 HP if not NEGATIVE HP. If you don't TUNE for it the car and MAF sensor have no idea what to do with the air and the computer can only trim so much AFM.
We tested the SPT (Subaru Performance Tuning) intake for the legacy GT. They calaimed like 10HP and put up a dyno chart and everything. No intake and then with intake. And sure enough there was a 10 hp peak change. Well we tested it 3rd party on a totally stock car like they did. It produced -3 HP across the range. You can make dyno charts do whatever you want. Click and drag. It is simply unrealistic to think that you will get 31 RWHP out of an air filter and a bigger exhaust pipe.
The other thing is....you don't get good reads on intakes on a dyno anyway b/c there is no air rushing in. Yes you have fans but it isn't the same EVER. So unless they Street tuned for that intake then redyno'd it would never really produce much on the graph.
My point is they never claim that they have or haven't tuned that car in that thread, and no one ever asked as far as I read. So if they TUNED the car for 93 oct with those mods maybe I would believe it. But since they are the manufacturer and they are selling the product, that post is nothing more then a big ad for them and most people in the aftermarket are suckers for dyno charts. And companies know it.
Also they didn't even touch the headers, it is a cat back system. That is simply a Y pipe and mufflers. If they did manifolds back that is another story but just a cat back won't get you much in gains especially on a V6.
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