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Spark plug denso 5346 change interval

Fl stingergt

Stinger Enthusiast
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Does anyone know the change interval on the after market denso 5346 plugs. While running jb4.
 
Normally once you start getting misfire codes, but 15-20k miles if you want to be proactive.
 
No codes yet. About 10000 miles on set. Car has a tiny pop out exhaust I’ve noticed in the last week. Only under full boost . It’s done it two or three times out of probably over 30 wot runs. I can’t tell if it’s un burnt fuel when transmission kicks down blowing out exhaust. Running map 3 have never had this problem.
 
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You'll get misfires usually when a coil goes, they will fire but just weakly.
 
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Will you always get a cel code on every misfire? Or can you getisfites without codes?
 
Ha.... I'm over 30k miles on mine... Still rollin'
 
Will you always get a cel code on every misfire? Or can you getisfites without codes?

Not always right away, might just start sputtering a bit first. Seems to be a flaw with the ECU software where it sputters when it should misfire code right away.
 
Kia Stinger
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