View single post by Jensen Healey
 Posted: 05-14-2005 03:33 pm
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Jensen Healey

Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 983
It does seem odd that the airflow is blocked by the piston. IIRC there are several spring ratings and the Jags used a lighter spring. If the piston pops open it takes a moment for the fuel to get there and you probably would get pinging instead of power.

I suggest you contact Joe Curto who can provide you advice on performance tuning. Then let us know!