Modifing The Supertrap Exhaust!

[Raywood]

Has anyone taken out just two plugs and left the other two?

Depends how much volume of exhaust you want moving through your pipes. Here is a picture of the front plugs. Not much flow here!!

http://www.bigdogbiker.com/forums/performance/6139-exhaust-issues.html

 

[erldawg]

I would think removing two of the plugs would be better than none and leaving or drilling a hole in the front plugs would still provide back pressure to reduce decel popping with the stock exhaust.
Ultimately replacing the pipes with something less restrictive is the goal. V&H 2-2 or 2-1.

 

[Robusto Bob]

I will have to agree with this mod 100% I removed all four baffles of my stock exhaust and re-jetted the carburetor. Sound and performance is extraordinary compared to my Vance & himes 2-2 and the mean mother I owned in my previous k9.
Sound clip coming soon!

Hello I have a 02 Pit and I also removed the baffles, now it back fires a bit during decent and sometimes loses power @ 2,500 rpm. Thanks Bob

 

[Jones]

Fix that pop & power loss

Robusto Bob,
What size jets did you install? Did you make any air filter mods?

 

[Jones]

Baffles out.

Hello all,
I drilled out the 4 baffles in the stock Supertrap exhaust on my 08 Ridge. Changed the jets from what I found as stock, INT .031-MAIN .076 to INT .032 and MAIN .078. I adjusted the Super G per S&S instruction ( I have done a couple other Es before this G Carb adjustment so I'm comfortable that I have it dialed in to S&S recommendation. The bike idles perfect and accelerates perfect, no dead spots. I have decel pop. Need a fix. I like the "washer baffle" idea but the Supertrap does not have a screw hole for the existing baffle like the Mean Mothers has. Any suggestions?? What type of carb adjustment would reduce the decel popping? I don’t think removing the bottom bowl vent plug would help, would it? seems like I have atmospheric pressure in the bowl.

Thanks. Juice

 

[ALDog]

Juice, I was never able to get rid of the decel pop with the stock pipes/ no baffles. As you mention, I was able to get it running great but that was always an issue. :loony:

 

[Jones]

Think I'll try this

Al thanks for the info.

I have read every post related to decel pop. Ill try enrichening a bit, check for leaks. On the 08 Ridge exhaust there is a dress up "end cap" When I reinstalled the cap in order to make the two side screws line up I had to pull out the end cap about 1/32. Real easy to pull the end cap back off and cut a spacer (read Baffle) plate with holes to give me some back pressure. Ill experiment. I do have a question for the gurus. Any specific hole pattern better then others? I wondered why Scubaman came up with the washer pattern that pattern has a hole in the middle with perimeter airflow around 95% of the assembly. The shank of the screw eye providing the 5% obstruction. I was just going to drill a .75" hole in the center of the spacer plate for each of the two exhausts diameter is app 1.25" for each exhaust. comments are welcome and appreciated.

Thanks Juice

 

[BubbleHead]

I removed the back two plugs first and it still popped on decell. Then I removed the front two plugs and it still popped. Of course I had changed the air filter to a K&N with a desperado cover and re-jetted to a .032 inter/ .076 main. Never stopped the decell no matter what jets I used. When I had the starter replaced under warranty the dealer replaced my entire exhaust system with a new stock one becuase they said it was broke where the muffler met the pipes. So.... I have so far left it stock on the exhaust and re-jetted back to a .031 Inter/ and a .074 Main jet. Still running a K&N filter and the desperado. Bike runs fine with a tiny bit of pop on a hard decell only. Now to the point of all this..... can anyone suggest wether the Mean Mothers or the Vance and Hines Big Radius is the better of the two exhaust systems? I know the 2 in to 1 exhaust is supposed to produce more power but I'm not a fan of the looks of these exhaust systems. I perfer the look of the shotgun 2 in to 2 systems. Which ever one I should eventually choose I'm not planning on modifying them from there stock configuration. I'd be happy with them the way they are just a question of which is the better system to use in regards to overall performance in the stock configuration. I have heard of the V&H dragging the ground on hard right turns. Does that happen with the Mean Mothers?
Thanks in advance for any and all input,
BBD

since this post I have decided to install the BDM slip-on system part number Part No. 193-000041-01

this system provides me with exactly what I was looking for.