I have a 12 XP4 900. I posted here as I thought the XP900 thread would catch more traffic.

I’m recently purchased the Double down intake kit. I’m looking to add the SLP slip on exhaust as well.

Will this require any additional fuel or tuning ?

I plan to add cams soon and will definitely add a Dobeck or other tuning to compensate then.

So I’m curious if I will need tuning for the intake mods and slip on exhaust.

I’m in WV below 1k feet elevation.


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