Which pipe is louder?

[kirkmoon]

I just traded a Mille R with an Akrapovic slip on in for a Tuono with the Aprilia Evo Titanium slip on (which my dealer tells me is made by Arrow.)

The Akrapovic was just about right for my taste. Throaty and relatively deep but not penetrating or embarassingly loud.

The Aprilia/Arrow started out a bit noisier and deeper than the Akrapovic but as I put on the break-in miles it seemed to pack in a bit and after 500 miles it seems really loud. I notice that people look around when I approach and I'm almost embarrassed to ride it down my street or around town. I went out for a 400 mile ride yesterday, and after a few hundred miles, I was burned out by the noise, even with earplugs.

I am trying to determine if this is just a figment of my imagination or if these pipes are really different. Anyone here have a chance to play with both or know what the decibel readings are supposed to be? I know that the Aprilia/Arrow pipe is claimed to be 100dB on the Aprilia USA web site. I can't find a number for the Akrapovic slip on. The full system from Akrapovic is supposed to be 98dB and I would assume that the slip on alone might be a bit quieter, but this is only a guess. The stock setup is supposed to be 94dB and is plenty quiet for daily use but I wan't to lose that boat anchor.

Thanks.

Kirk

[Kam]

Interestingly I have the aprilia racing exhaust both on my mille and tuono, and I'm convinced its louder on the tuono. Not sure why....:rolleyes:

[jng1226]

I would sell the Aprilia RSC can on eBay and get another Akrapovic slip-on from what you describe. I have the Akrapovic and a hi-mount Leo Vinci and the Akrapovic is definitely less obnoxious. I've also ridden with a couple other Milles with the RSC Titanium can and they definitely are much boomier.

It's the general consensus that the RSC can is the one of the loudest exhaust options available for the Mille, while the Akrapovic is on the other spectrum and quite "neighbor-friendly".

[Kilat]

The RSC Titanium can WILL get much louder over time. If you don't repack it, by the time you hit 8000 miles, your neighbors are gonna really hate you. The Arrow slip ons will pretty much do the same thing. They both blow their packing out over a short period of time.

[Internec2]

I have the Aprilia Ti can, and I feel I am doing a public service to "real world test" everyones car alarm that comes across my path. I hear the tigraft is louder though.

[rsvmiller1]

I love my RSC can... loud and deep down low, gets higher pitched at the higher rpm's.:evil:

I'd love to get the Tigcraft's too... I like the loud pipes.

[kirkmoon]

Well, thanks much for the real world info.

I think I had my fill testing out other people's car alarms yesterday. I put over 500 miles on the Tuono this weekend and I am fairly sure that the Aprilia pipe got louder the longer I rode. Must have been packing it in. I'd hate to hear it in a few thousand more miles. Getting into Harley range.

I called up my dealer and he was kind enough to let me swap the can from my trade in bike back onto the Tuono. I got my Akro can back and we put the Aprilia can on the Mille that he is now in the process of selling. Nice guy, huh? So if anyone is looking for a very manly sounding used Mille R, go check it out at Scuderia West in SF.

Thanks for the help.

Kirk

[AV8OR]

I just got my RSC pipe a week ago and I love the way it sounds. Sounds like a true V-twin now. I only bother the neighbors when I go up and down the street. So twice a day they can live with it.


Jon

[artbell]

just wondering if the rsc shotguns sound/behave the same way as the single rsc slipon. Anybody heard them?

[nimskov]

I also had the RSC TI Evo on my RSV.
It also became MUCH louder over time up to the point, where I had enough. I bought the Akrapovic Ti slip, and I haven't looked back since.

I have now had my Akra for ~1 year and run ~ 12.000km with it.
A friend of mine just purchased an identical slip to his RSVR and when we compared the sound there was NO detectable difference in noice-level.

One bad thing has happend though - the nice-looking Akrapovic sticker has peeled off... :(

Btw. I had my Akra meassured to 103dB @ 5000rpm, but that's probably not much worth when there is nothing to compare it with.

/Nimskov

[Kam]

Nimskov, when you switched from the RSC to the Akra did you get a new chip?

[Smoke Eater 41]

I'll bet that the new Tig 80 is the loudest.

[gabriele bigoloni]

The loudest cans should be Akrapovic's 64mm twins as fitted by rustie6. I came to this conclusion not because I heard them, but because the "open" gas exit surface is the greatest of all other combinations, including Tigraft's awesome looking 80mm 2-1 system. I have the Aprilia Ti shotguns and like their sound. They are civilised up to 3000 rpm, making a deep pompone rumble, then the sound turns into a harsh, metallic bark, very "racing" and loud. Over 7000rpm they are a scream. I opted for the shotguns as I believe it's the prettiest system you can fit on an RSV, IMO, regardless of performance gains or loudness. I have not had it dynoed, but the bike feels stronger throughout the rev range. As it turns out, according to the graphs posted by Ken Zeller a while back, it's also one of the best performing ones, which doesn't hurt...

Ciao to all, :)

[r100gs]

Artbell, The shotguns are a lot more quiet due to the tapered baffles they have.

[irdave]

I currently have the Arrow slip on. I just repacked it, after 10K miles, and it made it a fair amount quieter. I really try to ride on the right and behind people.

I can't wait for the woman to get her own bike and I can install that Arrow twin full system sitting in the toy room...

I love loud pipes. Especially at the track- GAWD they (the Aprilias in general) sound freakin' great when run to the rev limiter! I love that sucking sound as one just dips the throttle for the up shift without the clutch... mmmmmmm....

dave.