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Old 04-28-2019, 10:19 AM   #1
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What Spark Plugs are you running?

Is the factory plug the one to go for or is there a better one on the market?


1997 2.5 Boxster NASA Time Trial track car
2003 911 C2
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Old 04-28-2019, 01:53 PM   #2
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Better is relevant. Factory works fine unless you have pimped out the engine.
5280 Cruising @High Altitude
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Old 04-28-2019, 01:56 PM   #3
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I'm using NGK 94279 FR6AHX-S Ruthenium HX plugs. So far they have been great plugs.
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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Old 04-28-2019, 11:35 PM   #4
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Beru fitted last time I changed mine. Cheap and correct so you can't go wrong.
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Old 04-29-2019, 05:26 PM   #5
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I've used NGK, Beru, Porsche, and Bosch. All have worked fine and I couldn't tell any difference between them.
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
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Old 04-30-2019, 07:34 AM   #6
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I buy the cheapest Iridium name brand plugs I see. They last longer.
Jerk that is constantly criticzing new forum members and overly advertising my rebuilt engine for sale for a highly inflating price along with other miscellaneous parts accumulated over my 20 years of ownership.
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Old 05-03-2019, 11:48 AM   #7
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Called a Pelican "Porsche Specialist" for guidance on the ~10 choices of plugs listed for my 3.2L engine. She asked if I tracked my car which would affect the proper plug choice. Neither of us could determine exactly how the internal combustion process would change with track vs. street asphalt conditions. She thought the gap might be different - etc...
It would seem the TStat, H2O pump, fans, ECU would all operate the same. Commentary from those with facts???

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