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Jet Boats
General Jet Boat Discussions
Yamaha 40/28 2 stroke vs Yamaha 40/30 4 stroke
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<blockquote data-quote="openseat" data-source="post: 332525" data-attributes="member: 10379"><p>This is straying off the OP's question a bit...</p><p>There are a few threads around from a couple years ago (one on this site) that say the stock rev-limiting chip in the ECM can be problem when running a jet on the 60/40 etec. You'll want to ask the dealer if they've solved that. Apparently some guys replace it with a high perf chip, but that voids the warranty on a new motor.</p></blockquote><p></p>
[QUOTE="openseat, post: 332525, member: 10379"] This is straying off the OP's question a bit... There are a few threads around from a couple years ago (one on this site) that say the stock rev-limiting chip in the ECM can be problem when running a jet on the 60/40 etec. You'll want to ask the dealer if they've solved that. Apparently some guys replace it with a high perf chip, but that voids the warranty on a new motor. [/QUOTE]
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Jet Boats
General Jet Boat Discussions
Yamaha 40/28 2 stroke vs Yamaha 40/30 4 stroke
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