I've been thinking about switching my closed end cap on my Supertrapp supermeg to open. I think there's a pretty accurate disc removal # to match the restriction. I had a dyno tune, so I don't want to mess that up by changing the flow rate. Any thoughts?

 

I couple guys I used to race with switched to open on their race bikes and they just adjusted the number of disks like you said. Their bikes still made good HP afterwards.

 

8 discs with open end cap = 20 discs with closed end cap. I got that straight from the makers at supertrapp!

 

 

I thought that open end equated to less 4-6 discs....

 

Open end cap = 10 to 12 discs.

 

Yep, that looks like the number. Going to try it out. I'll report back when the new cap arrives.

 

I did that on my SE Nightstick. I ended up with 5 discs with the Supertrapp open end cap. Tune seemed unaffected but the added low tone accompanied by the extra bit of sound was appreciated.

 

^^^this^^^...I'm running with the SE Nightstick with 6 disks and the Supertrapp open end cap. The bike has great great low to midrange torque and funs great.

Very pleased with both the performance and sound...

 

Anyone got a sound clip of the SE & 103HO?