I just read that someone said that you shouldn't run anything bigger than 2" baffle if you have a stage 1 or 2, only thing you're doing is creating a lot of noise and losing power specially low end with setup. I know I had Stage one on my old 07 Ultra 4" with 3 1/2" baffles and it performed flawless. So can someone explain to baffles selection for stage 1, 2, 3 and 4?

 

So, No help on the Baffles?

 

I would prefer to buy a system suitable for a particular build, rather than mess with detachable baffles. My way of dealing with the challenge was to buy a SuperTrapp 2-into-1 with stackable 'baffles' - an alternative fine-tune approach to the challenge.

 

Staying around 2" for baffle size, while running duals, keeps escaping exhaust gasses moving at a higher velocity. The more open the baffle, the slower the exhaust pulse. A faster pulse, creates a vacuum behind it. This aids in drawing in more fresh air and fuel on the intake cycle. This is called scavenging. More air in the cylinder and fuel on the compression cycle, creates more power and higher, low end torque. A proper baffle size on a 2-1 set up, is best at around 2 1/2"

 

 

well, that all depends upon the baffle design and the noise level you want to achieve.
i make my own and like every thing else, you have to play around till you get what you want.
also, it depends upon the size of the pipe you are going to install baffles in.
perf baffles are the hardest since distance from primary wall, hole size and length are big factors. then you have to consider the end plates that hold every thing together.
my favorite is the church key baffle, easy to make and easy to tune in, like a collector for a car header, make over-size and trim till you get it in.
there are two types, straight and twisted. i like the twisted since it is a natural barrier to reversion. you might be able to find off the shelf already cut tubing but easy to do with a die grinder and some drifts.
of recent, i made a new style, a twisted plate and have an idea for a wave plate. i recently up the power on my 1974ch and the old 2" was toast but i had on hand some 1.750 pipes. i could not tune it in so i tried some perf, no go, could tune low or high but not both and besides, the end caps restricted the flow. that is when i started looking at industrial and race exh sys.
you can control sound by change of direction since sound waves travel in straight lines. with this design, i got sound control and clean burn, runs like a scalded dog to 7.5k and putts around town flawlessly!