Spark Plugs?? Iridium? Platinum? Hot or Cold Plugs? Helpppp

Subysaurus Rex

New member
doin new plugs in the 08 wrx...anyone know if subies prefer any of them? like cold plugs or iridium platinums or something? any help would be appreciated

 
+1 The stockers should be good for 60k or so. The main adv to the iridiums is the long change interval, which is a big selling point on for subies.
I am even getting those for an old one...(except 3903 part#)

The platinums have an opposite of fail error in that spark gives an "over air" in the summer cold starts (I have never encountered this before). fast and furious ...

I did get 94 k out of them.. but not using again.

These NGK Iridium IX spark plugs feature an ultra fine center electrode that's designed not too thin to ensure maximum durability and life of the spark plug and not too thick for an accurate and consistent spark. They represent the ultimate evolution of spark plug technology and performance. Iridium is significantly stronger than any metal used in spark plugs today. It's the hardest metal used (in fact, iridium is 6 times harder than platinum) which has allowed NGK engineers to design an ultra fine center electrode reducing the voltage requirement for spark.
one step colder seems to be the wrx norm...double firing even on oem is a toaster.

 
I would say for a mostly stock setup, get stockers, or stock equivalent NGK Iridiums. I run one step colder, but that's for car with boost pushed out a bit more.

 
im just over 50k...good looks tho boys. appreciate the help. prob just oe replacement ngks then. and ps...not stage 2...just axleback and intake.

 
Colder plugs help your push out the boost on more modified setups. It helps keep the knock down by preventing pre-detonation.

 
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