Aftermarket exhaust - single canister vs double?

I'm looking at replacing my stock exhaust with an aftermarket set up on my 6th gen VFR. I've read lots of related threads detailing the benefits of each company's offerings...but I see lots of questions about whether there's any significant difference between the exhaust being ported through one or both cans? Have there been any tests done to compare the performance/sound of the two set ups?...or does it come down to simple "personal tastes"?

thanks,

 

Sound is personel preference and slightly varies from one manufactorer to the next. The best sounding in my opinion are the Two Bros and the Leo Vince. Two Bros for throaty depth and just the right amount of DB (98). The Leo Vince for smoothness of depth, if a little on the quiet side. Neither are obnoxiously loud. In terms of performance there is also very little fluctuation. Two Bros claims that they acheive slightly more torque with their one operating can design over the more conventional 2 can set-ups. The Two Bros M2, because there is no Y-pipe and because of its short can design, is the lightest system you can buy that I'm aware of. If memory serves, it will shave nearly 20lbs off of stock; which is a nice preformance benefit in and of itself.

 

Thanks Havcar. I've read a lot of posts from owners who chose the cheaper alternative...the "exhaust gut" route? Is the sound measurably different than an aftermarket exhaust? Is there a risk to the engine without he baffles? ie. back-pressure?

 

I've never thought much of the gut mod. Most of the people that have done it will say how much they like the sound, but realistically it's not even in the same league as a proper exhaust. The sound, to me, is harsh and rough. Quite frankly, it sounds cheap and detuned; which is exactly what that mod represents. If money is at all an obstacle then I would say maybe do the gut, maybe. Also, a gut won't provide nearly as much in weight savings. As far as performance goes, I've never seen any measured numbers, so I don't know, but I have to think that back pressure and mapping are affected. I did just see the conically tipped Leo Vince in carbon fiber going for $600 on ebay.

I should be getting torched here pretty quick.

 

I did the semi-gut
No HP gain at all, albeit a bit louder and the sound is like a small block chevy.
I like the look of the stock set up over most of the aftermarket.
I will prob end up doing a custom set up myself at some point.

 

I sold my Staintunes and did the semi-gut of the stock exhaust. No regrets.

If it's about performance, you have to ask yourself how much money you're willing to spend per HP gain.
If it's about exhaust tone, you have to ask yourself how much money you're willing to spend to hear a nice tone/note that can only be truely appreciated with your helmet off with the bike at a standstill

Personally, if I wanted big HP #'s, I wouldn't have purchased the VFR. As for exhaust tones, I couldn't care less what the bike sounds like at 90mph b/c it all sounds the same anyway. I tell you what I did care about was the $650 I put in my pocket when I sold the Staintunes.

Spend the money on suspension upgrades

 

Is there any reason you can't fit a 'shorty' can under the pillion pegs on a later model VFR800. Seems cheaper, lighter, noisier....

I think I like this idea (as I browse on ebay) but will a 98 - 01 stubby exhaust go onto a 2010 VFR800?

Baz

 

You can always have something customized, but in the case of the 6gen, why would you? One of the great benefits of the 6gen is that it stands alone when compared to the other generations because it was originally designed to highlight the single sided swingarm; rather than having a can, of any size, interfere with the uniquely clean aesthetics. A lot of 5 genners go out of their way to find a solution in showing the swingarm, sometimes at great expense. Also, I can tell you that I thought my bike looked just plain stupid in the back when the huge spaces to either side of the brake light were void of some type of chimney. Weight reduction and noise can also be achieved (without slapping a stubby in front of the wheel) to differant degrees, depending on the aftermarket pipe you choose.

 

+1 for tink and havcar.
the stock exhaust weighs 28 lbs & the 2bros is the lightest at 8 pounds.
as for sound you have a 180 degree crank v4. it will allways sound awesome. i cant imagine any thing short of putting the stock exhaust back on that would ruin the sound.
but as far as performance goes we're just talking slip ons here, nothing signifigant is goin to change from brand to brand. these are not real full exhausts. if you can find a full 2bros left hand exit, fucking jump on it, if not do what ever you feel like... "personal taste"
hell, i sported a full gut for a few months (it sounded awesome), wanted more so i got a motad header (still sounded awesome), then i wanted even more and got the 2 bros vale. guess what? it still sounded awesome.
i wanted more and got a bmc filter, opened the air box up, and got a custom dyno tune. i gained about 5 or six hp total.
moral of the story? nothing earth shatering is gonna happen with a slip on, nor a slip on header and tune. (though you will get a smoother and more useable power band)
so unless you pull the engine or drop several grand, nothing earth shatterin is gonna happen.

 

lol just remeber to top off the vtec fluid first

 

Well boys, the answer is yes, a 98 - 01 shorty zorst will go straight onto a 2010 VFR800. It looks and sounds awesome. I also made up some little fairings to fill the holes left by the stock cans.

 

Mission to add a picture

Now to see if it makes a difference to add the Power Commander V... Sounds impressive, I'm sure... tic

 

it looks okay from certain angles but horrible from the back.
lets see those little fairings u made....

 

Looking good there Baz!

I am liking that a lot,really makes the back end of the bike look light and airy.

Gonna be doing something sorta similar on my Jokermobile. I've got a Two Bros M2 Elite exhaust that I'll be running just one high pipe on the right side.

You're kinda killing two birds with one stone here,you're getting rid of some excess tonnage by ditching that stupid heavy stock stainless steel exhaust and bringing what's left of the exhaust weight down lower in the bike's center of gravity.
Definitely gonna notice that weight loss during rapid side-to-side transitions in the twisties.
Good job man!

BTW Baz,that is one damn good looking machine you've got there. :thumbsup:

 

I like that look also...I'd have to do something with the exhaust hanger though.



......

 

Looks nice!

 

I'd also like to see it with the under-cowling spaces covered. I think the shorty itself looks cool.

 

Thanks Guys, Yeah it surprised me the difference it made to the handling, even though I had to ride for an hour to find a corner out here in the desert.

For Havcar, I only made the skinny little fairings to make the space underneith look a bit smaller as I didn't want to cut into the undertray.... The more I look at it tho, the more I'm tempted to bring out the hacksaw. Shouldn't take too much to bend up a bit of plastic to go right across the underside.