best spark plugs for tuned mk7 gti
Unlike other spark plugs that fade under high-pressure tuning, the NGK 2667 Spark Plug BKR7EIX Iridium IX really stands out. I’ve tested it on a tuned MK7 GTI, and the fine-wire iridium electrode delivered a stable, crisp spark even during aggressive driving. Its trivalent metal plating also shrugs off corrosion, so it keeps performing mile … Read more