You tell em, Maxdog!

To answer your original question: Do slip on cans really give more power?
I know your talking about C-14's and I'm bringing a C-10 into the discussion,,,, but it does partially answer your question.
So, here is my 2 cents (done on a 2003 C-10).

You want to do a run to compare bikes with different exhausts.
Your results will not be exact as the bikes are different.
To accomplish what you want to see, You have to do base lines on all the bikes in stock condition first and then add slip ons....

I bought a used dyno and did it all in 1 afternoon....

I did 3 series of dyno runs on my C-10.
Same day, same bike, same dyno.
I can post a copy of the results.

Run 1 was with stock muffler.
Run 2 was with Cobra F1s.
Run 3 was stock mufflers with baffelectomy.

Will not quote the numbers right now as it would be from memory.
But I will tell you the basic results.
Improvement was not huge, BUT,,,
The Cobras did improve the power curve. (The typical Connie Dip in Mid range was better).
   Increased Torque/HP primarily in Mid range and added a bit more on top end.

I was all smiles, then I did a run on the Stockers that had a baffelectomy.
Results were nearly the same as the Cobra's.

Bottom line "seems to be" that decreasing the back pressure (be either method) is what caused the change...

Ride safe, Ted

To answer your original question: Do slip on cans really give more power?
I know your talking about C-14's and I'm bringing a C-10 into the discussion

C-10 is ancient tech compared to the C-14.  It doesn't even have cats.

C-10 is ancient tech compared to the C-14.  It doesn't even have cats.

What's a C10? 

Yeah Max My Supercharged car and my Diesel pickup have 20in rims , My truck has a  5 in  pipe    turbo to tail pipe ,   I'll be dead in 20 years or less and I want to enjoy those 20 and I'm never growing up,  I still race drag boats, and I'm not afraid of death, there is NO HEAVEN or HELL( superstition) I've had twelve years of RC education the only thing it gave me was a quilt complex ( conscience)  . For less than $400. I have used ZX14 headers used two brother duals that give me a good bit of power over 6,000 RPM the reflash gave me the low end grunt, little to easy to bring the front tire up with the changes.  I love the sound of the motor up shifting  and down ... LOVE jj

Thank God we are all different ( no  cats have three dogs, give my love to PUSSY )

no  cats have three dogs, give my love to PUSSY

That helps explain the fire crotch avatar pic Cuda. 

That helps explain the fire crotch avatar pic Cuda. 

You know, I ALMOST said something....  I can't stand looking at that thing!  I wish he would change it!!!

That helps explain the fire crotch avatar pic Cuda. 

Love that avatar!!!!

Pokey that's because you like to blow smoke up womens A$$

It is a REAL hot air Ball-oon folks

What's a C10? 

C10?

C10?

 

Short of a full system installation the gains being reported will be the tune, not the can.  But at least the visual is much better.

Forget not that the Cats will still be in place with a can only.  The only way to validate gain will be when Jim and Pokey do the flow/volume test.
I think Bob (BDF) should supervise the test, similar to his fob soaking test.

If I was concerned about the weight of my bike, I would lose 40 lbs of my gut and get a lot better performance.

Better performace outta you AND the bike.   

Forget not that the Cats will still be in place with a can only.  The only way to validate gain will be when Jim and Pokey do the flow/volume test.
I think Bob  (BDF) should supervise the test, similar to his fob soaking test.

Fify again...sorry, I can be thick at times. 

Fify

Shhhhhhhh-Bob is bait to get Brian to join in the discussion as he was a major contributor to the first flow test...

What's a C10? 

Its the bike that COG was founded on and the reason you now have C-14's. Its folks like Steve in Florida, myself, Ted, and many others that have experimented and made significant contributions to improving the original Connie.
Sorry but I had to defend my little buddy "connie rider".     

Its the bike that COG was founded on and the reason you now have C-14's. Its folks like Steve in Florida, myself, Ted, and many others that have experimented and made significant contributions to improving the original Connie.
Sorry but I had to defend my little buddy "connie rider".   

All good JS, it was a joke... 
 
(my comment, not the C10.  )
 
 
 

No problem ZG, I'm cool.

Aaa ahh....

Gotta mention this. Back in December, I got my hands on a cf slip-on from ebay.  I really wasn't after any mods of sort, and I like my bike exhausts OEM quiet. The one I found had a price that couldn't be beat - so what the heck. 

I put it on, started the beast, and confirmed that the sound is quiet. Then, I went riding that weekend. My intention was to put the potato launcher back on the bike afterwards and save the slip-on. However, some favorable results were noticed while riding with the slip-on. Power? Didn't notice anything along those lines. I did notice that blipping the throttle for down-shifts that the engine rev'd better. The next best observation was the overall vibration was down - I mean seat, pegs, bars. Everywhere I made contact with the bike. Lastly, when I let go of the bars, the bike now tracks straight as an arrow in flight. The tracking has been check several times now, and I can rule-out any road crown or lack of.

Wanna know how straight it tracks? I'll tell you how straight it tracks. It tracks so straight I can unzip my tank bag, pull out the camera, shoot some pictures, put the camera back in the tank bag, and zip the tank bag closed. That's how straight my Connie tracks now!   

Now, I have no intentions of removing the slip-on. That's how much I like what it did for my Connie. 

Aaa ahh....

Gotta mention this. Back in December, I got my hands on a cf slip-on from ebay.  I really wasn't after any mods of sort, and I like my bike exhausts OEM quiet. The one I found had a price that couldn't be beat - so what the heck. 

I put it on, started the beast, and confirmed that the sound is quiet. Then, I went riding that weekend. My intention was to put the potato launcher back on the bike afterwards and save the slip-on. However, some favorable results were noticed while riding with the slip-on. Power? Didn't notice anything along those lines. I did notice that blipping the throttle for down-shifts that the engine rev'd better. The next best observation was the overall vibration was down - I mean seat, pegs, bars. Everywhere I made contact with the bike. Lastly, when I let go of the bars, the bike now tracks straight as an arrow in flight. The tracking has been check several times now, and I can rule-out any road crown or lack of.

Wanna know how straight it tracks? I'll tell you how straight it tracks. It tracks so straight I can unzip my tank bag, pull out the camera, shoot some pictures, put the camera back in the tank bag, and zip the tank bag closed. That's how straight my Connie tracks now!   

Now, I have no intentions of removing the slip-on. That's how much I like what it did for my Connie. 

Maxtog is probably not very happy with you right now.