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So I had my 2019 Mt09 ecu flashed by 2wdw with a full akra exhaust and a bmc air filter. It made about 116hp and 64ft lbs torque on the dyno. Do you guys think changing the plugs to something else would increase hp or is is not worth it. I was told by the tech's at 2wdw that it isnt necessary and the oem plugs were fine, but I would like to hear your second opinions and experience.
 

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Yamaha MT 09 SP 2021
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No gains from the spark plugs.If you need further improvements,next step are camshafts.
 

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So I had my 2019 Mt09 ecu flashed by 2wdw with a full akra exhaust and a bmc air filter. It made about 116hp and 64ft lbs torque on the dyno. Do you guys think changing the plugs to something else would increase hp or is is not worth it. I was told by the tech's at 2wdw that it isnt necessary and the oem plugs were fine, but I would like to hear your second opinions and experience.
I liked the way the NGK Iridium worked on my previous '17 MT
Iridium plugs
 
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