3.3TT Colder Spark plug Advantages/Dissavantages

[DrewU272]

I was to ask those that are running colder spark plugs.

What is the OEM heat range for spark plugs?

I was running Denso IKH24 which are 1 step colder than oem and I had 2 plugs go bad on me. I am tuned (JB4) and have WMI.

I purchased Denso IKH27 which are 2 step colder that oem. Is anyone running the Denso IKH27 had any issues with colder plugs?

Sorry for such a NOOB question, but i just got a error code of p0303 and want to change my sparks up. When i check autoparts store for Denso IKH27 its saying they dont fit the stinger. Im guessing that is not correct. Denso 5347 Ikh27 Spark Plugs are the ones I want Correct??

 

[Dadpool]

I just installed Denso IKH27 5347 last night. Works great so far. First thing I did was race a yellow motorcycle and won. Didn't even put it into race mode on my Racechip, just sport.

2019 Kia Stinger GT2 AWD
BMS CAI
BMS OCC
Denso IKH27
RaceChip GTS