(HELP) 600LT misfire P0305

A

Asahsu

Guest
Hi , my 600lt with catless downpipe & 20000km just tuned my car
after tuned the check engine light will flash after 7500rpm
so i change all the spark plug & coil
even 2 side of cam cover has been changed after all this done but the problem still there
obd2 shows p0305

new spark plug lock with 25Nm
maybe i need to talk to tuner to remap ?
 
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