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View Full Version : Supertrapp Slip On 3 Inch Mufflers:disc&tune



TOMCENTRAL
11-10-2007, 11:29 AM
I have a 08 Ultra that I am going to install a set of 3 inch DISC slip ons PART #628-78055.The bike has a stg 1 download,Hi FlowA/C,&tru duals.Should I run a even # of discs in each side or use more in the rite side since that pipe is longer?Will I need a after market dfo/tfi/fuelpak? I have run ST & ST/2:1megs for years & love em.Regards,Tom

bschultz
11-14-2007, 03:27 PM
I have a 08 Ultra that I am going to install a set of 3 inch DISC slip ons PART #628-78055.The bike has a stg 1 download,Hi FlowA/C,&tru duals.Should I run a even # of discs in each side or use more in the rite side since that pipe is longer?Will I need a after market dfo/tfi/fuelpak? I have run ST & ST/2:1megs for years & love em.Regards,Tom

The pipes come with 12 discs per muffler and I would install all 12 discs in each if you are running "true duals w/no cross-over". Our testing found the new "closed loop" FI is pretty accomodating. An additional 6 or 12 pack of discs may be needed for additional flow/tuning.
My apologies for the late response.