me? not currently, but have had two previously.
i used i heat range different on the exh side plugs as per nissans advice (6s & 7s) as opposed to 5s & 6s iirc)
secondary plugs are only there to burn off any unburnt fuels left from combustion process, was a cheap method of cleaning up exh emissions, before closed loop ECUs were the norm.
disconnecting the 2nd coil has no effect on the dyno graphs
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Racing is life. Everything else, before and after, is just waiting.
- Steve McQueen
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