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West Point
The Library
6.4 Tech & FAQ
Weird rev limiter issue.
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[QUOTE="Petro, post: 1564476, member: 751"] I'm assuming it's probably not a tuning issue because this is the same tuning it had on it before it popped and it ran flawless before. I only retuned it after I discovered this issue with the new engine installed just to eliminate the possibility. I also reset the adaptive fuel tables to eliminate the possibility of something weird there. This thing cuts fuel soo hard it will damn near throw you forward, but if you don't let off the throttle, it will grab a gear and go right back to pulling hard until it hits 3xxxx or whatever rpm. My thoughts are, if it was a sensor causing it to defuel this hard, it should throw a code or at least say "reduced engine power" and stay in that limp mode. For some reason it just thinks 3200 is where its supposed to limit while heavy on the throttle. I'm leaning toward a possible ECM maybe. [/QUOTE]
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