Beru spark plug has broken down on my Stage 2. It crashed to cylinder. Had half of my engine rebuilt.
Than used Denso. Failed at some point. Now using NGK. Pulling great so far.
Beru was 80 something TL each.
Denso was 360 for 4.
NGK is 100 for 4.
Before spark plug failure i was over 260km/h
Now have a 10bhp reduced Stage 2. Catless DP
Denso did not break the engine. It was skipping ignition at a certain RPM (somewhere around 4.5k) which made the car jump.
Last edited by Slyly; 03-31-2016 at 04:28 AM..
Reason: Correction
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