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Old 05-18-2007, 02:00 AM   #1
Scooby Newbie
Member#: 148633
Join Date: May 2007
Location: Blacksburg, VA
2002 Impreza WRX

Question Spark Plug Recommendations...?

I own a 02 wrx that I will soon install Borla headers, and catless up and down pipe. I figured I might as well change the spark plugs while I have that much of the motor taken apart. I was going to buy the stock NGK's, but was wondering if there might be a preferred spark plug out there, especially for the increased hp.
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Old 05-18-2007, 02:47 AM   #2
Scooby Newbie
Member#: 121248
Join Date: Jul 2006
Chapter/Region: SCIC
Location: North County.

keep them stock and dont use the headers and you should be good to go.
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Old 05-18-2007, 03:25 AM   #3
Scooby Specialist
Member#: 80625
Join Date: Jan 2005
Location: Chi-town
VIII Evolution


Change it Platnum Iridiums.... A step colder isn't a bad way to go. As for the headers... send them back.. your money could be better spent in a number of ways. You won't see the gains your looking for. Search it if you don't believe me, this has been covered time and time again. Best of luck
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Old 05-18-2007, 03:02 PM   #4
Samurai Jack
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Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
2002 Enemy of Aku


You are not doing anything that requires a change in spark plug heat range. Stick with the stock heat range.

If you install headers, you will pick up some power on the top end, but you will be giving away torque on the bottom end. More torque = better acceleration.
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Old 05-18-2007, 03:18 PM   #5
Scooby Newbie
Member#: 118868
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: andover
2003 WRX


dont get the headers or sparkplugs and use that money towards engine management...imo
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Old 05-18-2007, 06:37 PM   #6
Uncle Scotty
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Member#: 16200
Join Date: Mar 2002
OK buy Nates beans


ngk bkr6E at .028" - .030" and done
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