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Posted by chief
 - September 12, 2012, 17:49:05 PM

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.

Posted by espiros
 - September 12, 2012, 07:24:22 AM

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.

Posted by aralph
 - August 30, 2012, 16:13:44 PM

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

Posted by 45 Bravo
 - August 19, 2012, 00:41:12 AM

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

Posted by pcarrell
 - August 18, 2012, 23:13:17 PM
Quote from: chief on August 18, 2012, 13:43:37 PM

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.
Posted by chief
 - August 18, 2012, 13:43:37 PM

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.

Posted by espiros
 - August 18, 2012, 10:02:46 AM

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

Posted by jagered
 - August 16, 2012, 15:38:25 PM

<-- 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. 

Posted by espiros
 - August 16, 2012, 08:49:45 AM

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?

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