XF and XFR ( X250 ) 2007 - 2015

Colder plugs for Mods

Old Nov 24, 2017 | 10:09 PM
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Default Colder plugs for Mods

The OEM plug for the 3.0L is the NGK 93476 SILZKAR7E8S Laser Iridium Plug.

Can anyone help me find a one step colder plug that has a non-protruded tip. I have called around and can;t seem to find anything. I am hoping someone here can help out since lots of people have tuned 5.0 engines on this side. I am about to begin install of another power-adder in addition to the tune/lower crank pulley so that will need to run a one or two step colder plug, but MUST NOT have the protruded tip.

The kit is almost here and after initial flow testing, I will begin climbing the ladder, but can't go far without addressing the protruded tip on the iridium plugs. I know I will likely not find an iridium plug and that is not a problem.

I can go with a shorter plug life since I will be checking them often anyways.

The NGK SILKAR8AI-9 is the next colder step in the Iridium range, but the tips are longer than the leggy blonde's nipples on a cold day. Any help or guidance would be greatly appreciated
 
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