Quote:
Originally Posted by Jinxx
I’m at 612/511 was thinking the lower ported would get me around 640/540 ish and that would be my last power mod .... from looking at Soho manifold it was looking like 30-40 increase after 5k rpm
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I think that is doable. I also use Ignite e90 which also aid in power gains as well. I know SoHo ported lower manifold provides consistent gains. I don't have any reason for doubting that Z1 wouldn't do the same. My motor is kind of freak in that it makes better tq than hp.
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