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EVO offers some stage kits for the Natutally aspirated vipers. . Anyone have experience, or a review on how they work?
Any reviews on the EVO NA Stage kits.
- Thread starter Cat800
- Start date
I ran EVO's stage 2 on my 7000 Cat with an air box mod, Straightline header and stock muffler. I did the premium fuel tune and had them set the rev-limiter to 9400 instead of 9800rpm.
There was a noticeable improvement in throttle response especially in the mid-range.
There was a noticeable improvement in throttle response especially in the mid-range.
