Hi,

I have a 2008 f150 harley davidson, i am wanting to get a new exhaust that is either dual out the rear or side, im not looking for true dual. But i am looking for it to be LOUD!!!, not to loud to the point wher its annoying but you get the picture. anyways i dont even know where to start on what type of exhasut to get. theres so many differnt things like H Y and X pipes, Si/So, Si/Do, pipe size, muffler size, and who knows what else. long story short i have no clue as to what any of this stuff means so if someone can maybe explain it or suggest a good muffler or exhaust kit that would be great. im thinking of maybe just buying a muffler and having the pipe work done at a local shop that i know of. anay suggestions would be appreciated, youtube videos really just dont help

 

i just put the banks power pack with the dual tip monster exhaust on my 5.4 FX4. i wish it was better. start up is not loud at all. pedal to metal it somewhat comes "alive." not to mention when im on the frwy and i accellerate sometimes it hits a specific tone and the whole truck resonates but not in an exhaust manner. i say dont buy this.

 

I would put a Borla S-type on it since it is a performance truck, make it sound like one

 

I would just swap the muffler for a borla. The harley's have a nice system, just chop out the muffler and have one welded in.

 

X2. a set of high flow cats and a S-type would sound awesome on this truck

 

Yeah, that would be my choice. No hi flows for a bit to see how the muffler breaks in, then add them later if need e. My 14" maggie is broken in now, going to be picking up hi flows in a few weeks Installed in May or so when I get out of school

 

Definitely keep the dual side exit.

 

I have listed here a muffler shootout test done by CAR CRAFT:

The Mufflers
MAKE MODEL Part No. COST
SUMMIT Turbo 630125 $14.75
THRUSH Magnum Glasspack 24214 $16.50
THRUSH Boss Turbo 17718 $23.95
HOOKER Competition 21006 $25.95
DYNOMAX Super Turbo 17733 $28.50
DYNOMAX Race Magnum 24215 $31.95
HOOKER Super Competition 21106 $35.95
SUMMIT Fully Welded 630325 $38.69
FLOWTECH Afterburner 50322 $39.95

MUFFLER FLOW TEST

MUFFLER Flow at 28-in H20
DynoMax Race Magnum 528.64 cfm
Thrush Magnum Glasspack 507.40 cfm
Summit Fully Welded 343.38 cfm
Flowtech Afterburner 342.20 cfm
DynoMax Super Turbo 333.94 cfm
Hooker Competition 232.46 cfm
Hooker Super Competition 320.96 cfm
Summit Turbo 331.16 cfm
Thrush Boss Turbo 297.36 cfm

MUFFLER Idle dB WOT dB
DynoMax Super Turbo 89 123
DynoMax Race Magnum 94 133
Flowtech Afterburner 92 124
Hooker Competion 92 122
Hooker Super Competion 90 125
Summit Turbo 89 124
Summit Fully Welded 92 125
Thrush Boss Turbo 90 123
Thrush Magnum Glasspack 92 128

DYNO TEST
All mufflers were dyno-tested on a 355-cube SBC with 10.0:1 compression, Air Flow Research 190 aluminum heads, a CompCams 292 hyd. a Victor Jr. intake, a Holley 750-cfm double-pumper, and 1 5/8 Headman headers.


MUFFLER HP TORQUE 2,500-6,000rpmAverage
Hooker Competition 397.4 381.1 286.8hp/351.9 lb-ft
Thrush Boss Turbo 407.1 384.9 292.1 hp/357.5 lb-ft
DynoMax Race Magnum 409.5 394.3 298.8 hp/366.9 lb-ft
Flowtech Afterburner 409.7 391.2 294.8 hp/361.7 lb-ft
Thrush Glasspack 409.5 389.8 297.7 hp/365.3 lb-ft
Summit Turbo 411.5 386.3 291.5 hp/357.4 lb-ft
DynoMax Super Turbo 412.7 387.2 292.6 hp/358.6 lb-ft
Hooker Super Comp 413.8 387.2 292.8 hp/359.0 lb-ft
Summit Fully Welded 415.4 390.7 295.6 hp/362.4 lb-ft

 

If you want dual tailpipes, Magnaflow 14" SI/DO, muffler #12198. Will retain low noise inside, and a great tone outside.

I cannot prove it for certain, but I believe the S-type/Stinger mufflers are Ceramic inside like the XR-1, so if thats the case, there wouldn't be a break in time, but like I said I cant prove it. Its surely the right way to go. They're a heck of alot smaller than the XR-1s

http://www.americanmuscle.com/borla-...-99-04-gt.html

But I would surely suggest not going with the S-type because they are basically a race series muffler, very very loud. I would say the OP would want something stainless in an oval body, like what your running

 

Good advice Darren

 

borla ftw !!!

 

Thanks, I wish I could prove its ceramic though, but im 70% positive . Never held one in my hands to inspect and I cant find a photo of the interior of one.

 

http://www.hotrod.com/techarticles/b.../photo_05.html

Borla XR-1 race muffler right here... stainless steel packing...

 

Don't forget about SLP or Bullets. I have the SLP LM2 looking to upgrade to the LM1's. Pretty loud. Next step...headers.

 

Remember what hes looking for,

Even with stock cats the Bullets and SLPs can be quite loud inside.