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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
SP542 Thread
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<blockquote data-quote="Guy" data-source="post: 1247096" data-attributes="member: 22717"><p>I think it’s time the SP542 gets a titled thread. There are posts about these little gems all over the forum in various threads from SPD to Whipple.</p><p></p><p>So post your setup, your experiences changing to the SP542 and your plug gap. Post why you changed and if it made the improvements you hoped.</p><p></p><p>For my own experience....</p><p></p><p>I had no issues with the factory plugs at 15k miles. MPT93 PRX, CAI, whipple intercooler, SPD adapters, FOMOCO catback. </p><p></p><p>I didn’t expect much. My hats off to you all for inspiring me. There is sharper throttle response. The low end, nonboosted power is smoother, and the idle is even smoother than it was before. It made the truck a little easier to drive and it’ll be easier to off-road with the improved low-end throttle control.</p><p></p><p>So the million dollar question.... </p><p></p><p>Why?</p><p></p><p>GRANTED I left the gap on the plugs at .030.</p><p>I didn’t think .025 was necessary.</p></blockquote><p></p>
[QUOTE="Guy, post: 1247096, member: 22717"] I think it’s time the SP542 gets a titled thread. There are posts about these little gems all over the forum in various threads from SPD to Whipple. So post your setup, your experiences changing to the SP542 and your plug gap. Post why you changed and if it made the improvements you hoped. For my own experience.... I had no issues with the factory plugs at 15k miles. MPT93 PRX, CAI, whipple intercooler, SPD adapters, FOMOCO catback. I didn’t expect much. My hats off to you all for inspiring me. There is sharper throttle response. The low end, nonboosted power is smoother, and the idle is even smoother than it was before. It made the truck a little easier to drive and it’ll be easier to off-road with the improved low-end throttle control. So the million dollar question.... Why? GRANTED I left the gap on the plugs at .030. I didn’t think .025 was necessary. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
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SP542 Thread
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