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I am a little skeptical as well. That is why I am trying to get as much infor as possible before spending $500- $600 dollars. On the article I read they it was dyno proven for 25hp and 35tq. This was with a retune due to the fact it made the car run lean. I also noticed that they gaine .4 of boost. I don't know. The more I read the article again and again it sounds like the good better combustion but turned the boost up to make gains.
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