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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Throttle stuttering on acceleration
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<blockquote data-quote="eclou" data-source="post: 1275976" data-attributes="member: 27872"><p>In my experience the stuttering was obvious from delivery. I just thought it might be traction control cutting torque because of wheelspin at mild/moderate throttle. The problem persisted in Sport mode and with traction control off. </p><p></p><p>The most similar experience I have had to it was with my 944 turbo race car. Running 20+ psi boost the motor would stutter as peak cylinder pressure hit around peak boost, causing knock/detonation/pre-ignition if I ran too much boost, ambient temp was too cold and AFR leaned out, or my race fuel mix was insufficient.</p><p></p><p>The 542 plugs are a stage colder and possibly tighter gap than factory, and I have much smoother acceleration now for $30</p></blockquote><p></p>
[QUOTE="eclou, post: 1275976, member: 27872"] In my experience the stuttering was obvious from delivery. I just thought it might be traction control cutting torque because of wheelspin at mild/moderate throttle. The problem persisted in Sport mode and with traction control off. The most similar experience I have had to it was with my 944 turbo race car. Running 20+ psi boost the motor would stutter as peak cylinder pressure hit around peak boost, causing knock/detonation/pre-ignition if I ran too much boost, ambient temp was too cold and AFR leaned out, or my race fuel mix was insufficient. The 542 plugs are a stage colder and possibly tighter gap than factory, and I have much smoother acceleration now for $30 [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Throttle stuttering on acceleration
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