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Yamaha: 4-Stroke Includes all Yamaha 4-strokes, Nytro, Apex, Phazer, etc
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  #1  
Old 09-30-2015, 04:11 PM
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Default Evolution Powersports Viper/7000 Turbo Reflash is complete

Here are the dyno results from Stage Tuning a 2014 Viper with 346 miles - the ECU had the 2015 update. First off, a big thanks to Terry for arranging to have himself, Tim and Dave for coming out to our shop last week and letting us stage tune on their sleds. Also a big congratulations to Terry for winning the IHRA, Summit Super Series....Import Eliminator!! After consulting with Terry and from our own experience, we felt the original 14 base file was the best for startup as it did not have the "kickback" that the 15 update and 15 sleds had. The kickback is what kills the starter and gear which can take out the engine. The 14 also had a better fueling calibration. We can base the tune on any year sled - 14, 15 or 16 - if a customer wants the tune based upon a 15 calibration, they need to let us know when they send the ecu in. By default the tune will be based upon the 14 tune. There are rumors that there will be another "update" from Cat/Yamaha this year. We will have to look at the changes to see if it is worth incorporating these into the flash.

As we already knew from our experience with the Nytro and the preliminary work we did with the Viper last year, the engine responds very well to additional timing, fuel revisions and higher rev limit. There are many options for customers depending upon what fuel they want to run. We have an 87 Octane tune with minimal timing changes, a 91 Octane tune with moderate timing changes as well as a 95 Octane race tune. In addition, there are stages with fueling corrections added depending upon what modifications have been done to the machine.

The tunes are up on our website now and we will put together complete packages in the coming weeks. We are offering all TY members a 5% discount on all tunes & packages and a 10% group buy discount (3 or more).

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  #2  
Old 09-30-2015, 05:27 PM
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My ECU is coming out and heading back to EVOPS for updating!!
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Old 09-30-2015, 05:49 PM
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Mine will begoing there also as soon as I am sure the turbo works good with no codes or isues.
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Old 09-30-2015, 06:47 PM
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It's nice to see that EVOPs is pressing forward with continuous development on this system.
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Old 10-02-2015, 11:50 AM
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9800 sounds like a lot of RPM..
Id love to get the flash! haha
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Old 10-02-2015, 01:26 PM
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Have you performed any of these dyno runs without increasing the RPM? So dyno run with timing and fueling but stock RPM? This way we would get a real indication of the gains of raising the Rev limiter. Just curious how much of the hp gains are actually from raised RPM or your fueling and timing change.
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Old 10-02-2015, 01:27 PM
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Sorry forgot to mention tho great work those are impressive gains regardless.
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