Vances And Hines longshots.

[kennethrosado]

Here's a little information on torque and back pressure.  I put these in my Bub's Big Willy's and my low to mid range performance came back.

http://www.nightrider.com/biketech/exhaust.htm

If you don't want to build them, Gman Industries sells pretty chrome ones for around $30.

http://www.gmanindustries.com/shop/pc/viewCategories.asp?idCategory=75

[rawv]

I've got V ance and Hines longshots on my 1500 ..I pulled the baffles out and wrapped them half way with baffle wrap they sound good... loud enough but not to loud and it still has back pressure. 

[aralph]

I'm using a Power Comander III with usb.
Purchased throught pipecity.com  $299 . Here is the link http://www.pipecity.com/Products/ProductDetails.cfm/Search/PC201411/ProductID/34459

Simple to install, just follow the instructions. Didn't have to remove the tank, just unbolt and lift it up enough to
get at the injectors.
As far as the maps are concerned, there isn't much to it either. Again just follow a few instructions. Or Pipecity will load the
map for you at no charge.
I'm using the suggest map with no dyno testing, the bike is running great and getting 45+ mpg.
but as Chief said a dyno will dial the map in to get peak performance.

[chief]

The PCIII and a couple of others uses maps... but you should find a dyno and have it adjusted that way to get peak performance. I have a cobra, simply because it doesn't use maps or require dyno runs to get it set... it might take to trial and error... mine only needed on adjustment.

[espiros]

Is the powerr comander easy to install?
Will I need to download maps?
This seems to be way to complicated isn't?
Are the power comander easy to intall?
They are different ones, which one is the best?
DYNOJET PCIII, Cobra, Vanes and Hines.

[aralph]

I'm running the same pipes also with no baffles but installed a Power Comander 3 at the same time.
Yes these pipes are hotter then the stock exhaust,  but I've got no discoloration at the exhaust
flanges and slight blueing of the exhaust pipe, nothing on the shields. To much heat suggest you may be running to lean.
Just like carbs & rejetting, fuel mixtures need to be controlled properly when altering intake or exhaust and may be beyond
the ability of the stock EFI.
This heat issue should be looked into more.

Regards
Aralph

[45 Bravo]

Back pressure.... YOU NEED IT..
But on a 2 stroke it will bite you in the butt...

A long time ago we were playing with a friends little brother's little yz-80 Yamaha in the back yard one day, i was riding a wheelie and going through the gears, in 3rd, it hit the right rpm, and got "on the pipe", it promptly dumped me right of the back, I sat there on my ass, watching it roll slowly across the yard mocking me..

I learned a healthy vitamin enriched respect for 80cc and a pipe..

Later i started racing radio control alcohol powered boats, using tuned pipes. Varying the length just a little bit had dramatic results on the engine and horsepower.
We could get an Italian Picco .21ci (3.5cc) engine to crank out 3 hp with the right pipe, and nitro content, at 28,000 rpm!
I had no torque, but it was fast..
On a side note, they always seemed to run the best, and fastest, right before they threw a rod or spun a main bearing...

45 Bravo

[pcarrell]

OR, removing the baffles could make the bike run WORSE... some back pressure is a good thing when it comes to engine performance. Additionally, adjustments to the EFI is often required.

I've noticed that the backpressure helps in scavenging the cylinder on the exhaust stroke.  Fuel economy and power seem to be improved to me, but I've not dyno'd that to prove it.

[chief]

OR, removing the baffles could make the bike run WORSE... some back pressure is a good thing when it comes to engine performance. Additionally, adjustments to the EFI is often required.

[espiros]

THANKS!
Yes....Im thinking about getting a performance air intake installed...

[jagered]

<-- same pipes, not de-baffled and get friggin' hot!!!

so don't think you have anything to worry about there... as for performance?!?  i am no expert but removing the baffles reduces the restriction of exhaust gases... which could make the bike perform better... but i am taking a guess here that if you have better flow out, you want better flow in... which means an air intake mod... then you are talking needing a fuel processor... oh the joys of modding! 

someone on here may be able to provide a before and after dyno that would prove it one way or the other. 

[espiros]

Hi Guys.
I purchased a 1500 Drifter that came with V&H longshots  and baffles installed.
The thing is....I remove the baffles to make the bike lowder.
My question is, will this affect the bike in any way?

The only thing I notice so far is, that the pipes gets very hot.....At least Hotter than my other bike (a Shadow) This Drifter is my 3rd bike so, it well could be that they run hotter than others?

Now....Does the baffles help it in any way so is not that hot?