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Review on NGK (8931) RC-FX50 Spark Plug Wire Set: Unparalleled Performance and Precision by Brendan Thorpe

Revainrating 5 out of 5

For 1999 Subaru Outback 2.5

For 1999 Subaru Outback 2.5 engine. This is the one you want, not 8691, plug shoes are very different. Made a huge difference in acceleration, idol and throttle response. Very nice set of well-made connector wires. I checked the resistance and they were all the same at 6 ohms.

Pros
  • Spark plugs and wires
Cons
  • Ugly packaging