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My ported 95mm made 1/1rw more than the 103 in my testing back to back. Probably 10 minutes between the runs. I did three passes with each.
The problem with either on the stock IM is that there is still a restriction behind the TB in the actual manifold. You can only get that portion to around 90mm if you get real thin in the throat. But I have three or four cars running the stock ported IM/95mm TB with good results so far.
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