Changing Exhaust

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Aug 4, 2023 | 11:24 AM

bigfella48

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Novice

Joined: Apr 2013

Posts: 17

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From: georgia

Changing Exhaust

I currently have stage two on my bike, Full Sac head pipes, Cycle Rama 575 cams, S&S hi flow air filter, with a power vision tune. I would like to change my slip on mufflers, but don't know if I do, will I have to retune the motor.

Aug 4, 2023 | 11:34 AM

NoRegerts

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Joined: Mar 2011

Posts: 16,982

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From: Texas Hill Country

Who sent you the tune for the Power Vision? If Fuel Moto, they can answer that question. The baffles you have and would run, if different, can affect how the engine breaths. It's possible there would be a change, but I can't imagine it would be enough to warrant a new tune. Maybe a couple AT runs on the PV to be sure.

Aug 4, 2023 | 12:13 PM

OneMoreTime

Intermediate

Joined: May 2022

Posts: 29

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From: Somewhere South

Install the new slipons and give it a rip to see how it runs. You aren't going to hurt anything with a change like that.
Is the tune you have now a canned tune or did you dyno the bike?