do-work-son Posted August 19, 2012 Report Share Posted August 19, 2012 Have a 4 mil dune port from hjr with 35pwk and CPI 4 degrees timing and vf3 23 cc domes at 145 and 147psi for pump gas . Bike ripped pretty good but was Always looking for more power question is is there a big enough notice in hp tq gains to bump compresion up and or timing and have to run higher octane fuel ? Quote Link to comment Share on other sites More sharing options...
Finch Posted August 19, 2012 Report Share Posted August 19, 2012 at ur comp bumping up either you may need high octane IMO Quote Link to comment Share on other sites More sharing options...
Coupelx Posted August 19, 2012 Report Share Posted August 19, 2012 I don't think there's enough of a gain for a play bike. The time and money could be spent optimizing your current setup and have a fun, cheap and easy to ride bike. Quote Link to comment Share on other sites More sharing options...
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