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Stihl 661 compatible coils

Evansaw

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Hi All

Might be discussed before but wanna find out. If there are compatible Mtronic coils from smaller cc model like 261, 362, 441, 462 to raise the rpms and due to mapping maybe making a razor sharp trigger.

Few days ago went my 661s at mdg1 and recorded 13.600 and 13.700rpms
My 261 flying at 15.700rpms

all saws ported

My thoughts are coil swap with a 661 screaming at 15+k
 
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