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Engine RPM Protection

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Old 08-22-2007, 10:11 PM
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Recently, I was driving my 2007 F-150 FX-4 kinda hard. Hit 5000 rpm and the motor seemed like it was shutting down. Kinda like there was a govenor in place. Seemed kinda odd since the engine was still pulling, anybody have some insight?
Old 08-23-2007, 07:42 AM
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Originally Posted by dfresh27
Recently, I was driving my 2007 F-150 FX-4 kinda hard. Hit 5000 rpm and the motor seemed like it was shutting down. Kinda like there was a govenor in place. Seemed kinda odd since the engine was still pulling, anybody have some insight?
IT does have a speed and RPM limiter. If you want to get rid of it get a good tuner.
Old 08-23-2007, 09:50 AM
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dont plan on spinning it past 6,000rpm....the stroke kills the volumetric efficiency at high rpm.
Old 08-23-2007, 10:42 AM
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So the 5.4 we dynoed that made peak HP @ 6125 was a lie???... Of course it wasnt totally stock either.
Old 08-23-2007, 10:43 AM
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Originally Posted by NGM
So the 5.4 we dynoed that made peak HP @ 6125 was a lie???... Of course it wasnt totally stock either.
sure was, we all know you are full of it...
Old 08-23-2007, 11:17 AM
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Originally Posted by NGM
So the 5.4 we dynoed that made peak HP @ 6125 was a lie???... Of course it wasnt totally stock either.
we both know that the extended stroke of the engine degrades efficiency of the motor at higher rpm.



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