Mid Minarelli tune questions

Quinton /
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I'm doing a mild tune on a General with a Minarelly V1. I put a 15 15 on there, with a 60 main jet. I took the cylinder to a shop and had them machine off 1mm from the top. (they took off a bit to much, but I think I can fix it with a gasket no problem). I have a stock exhaust on it and drilled out the first manifold at the back of the pipe with a long drill bit going through the end of the pipe. I have a two piece bi turbo that I have not cut up to make fit. Soooo...

1. It runs, but tops out real low, like at 23 mph, is it becasue I'm not getting enough exhaust out? Do I need to cut up and fit that bi turbo? It runs and idles better than ever, I just killed the top end.

2. Is a 60 about the right jet to fit on that setup?

3. If I put on the bi turbo, I'll open up the exhaust port to match the pipe, but do I need to open up the intake too, or will it really not be a big deal?

Thanks!

Quinton

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