There is a lot more to porting a turbo and head that just removing material. Where to remove it is very important. An O2 housing isn't as critical. There are a lot of people out there that think they can port, but actually end up hurting performance. I know Mike has seen several cases like that and I have seen a couple.
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Is burning corn and stayin' warm!
My motorcycle is stock and reliable, my Talon is neither!
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