V&H 450 slipons vs Stock, 2020 RGL 131ci

[CVOThunder]

Think I have a good guess on what I need to do on this, retune. Bought a 2020 Road Glide Limited, had the 131 kit installed and it runs great. While I enjoy the sound coming out of the V&H 450 slipons, sometimes I'd like it to be a bit quieter. Yeah, I must be too old. Anyway, according to the dyno, which seems to be a bit happy to me considering it was built with warranty in mind and around 132 hp, 144 tq with stock headpipe.. On a road trip now, don't have the sheet with me but I'll look for the photo i took of it.

So this is going backwards with my exhaust but what can I expect to see if I go back to the stock slip-ons? I expect I'll increase back pressure and lose hp and tq but not sure how much. Probably best to check numbers in current config for a baseline then swap back to stock cans and then check/retune as needed.

Thanks for your ideas/tips. I'll post up the sheet when i get back.

[rigidthumper]

From what I've seen, the stock mufflers will reduce peak numbers some, cost HP above 4500, and will pick up the TQ at the beginning of the run

[Hossamania]

You may find it seems quicker just because you'll be more apt to twist the throttle harder with the quieter exhaust. Not faster, but quicker, if that makes sense.

[CVOThunder]

Thanks gents. Kinda what I was thinking and with the Stage IV heads I'll probably negate they're benefits by choking it back. Might even bring it back into a power and more usable. Once she hits 3500 it starts to fly and I need another gear. Anyway, I was warned about the curve hitting to the right. Doubt I go above 5000 but it sure gets there fast and of course speed limited.  So on the retune, guess it would only run richer and not lean out. I might give it a go to save the ears but it's not as loud as the 3.5" Rinehart true duals on the CVO. Blah blah. Curious about the real numbers though.

[CVOThunder]

I did take a photo.

[George W]

Why not Supertrapp

[CVOThunder]

Because I already bought the V&H and would put the stock ones back on if it drives me nuts.