what kind of spark plug did you guys use for your 3T-C or 3T-GTE?
i'm currently using NGK BP6ES with standard gap and it seems like i can't solve the miss fire at 4000RPM@10psi. i'm wondering if it has something to do with the spark plug i'm using at the moment.
before this i've tried to use NGK BPR7ES and it fouled. so i moved one step back with 6ES.
any suggestion?