FL Evo exhaust?

[Finn]

Hello.

I'm wondering whether an Evo FL by any chance is or isn't restricted on the exhaust side?

Mine has stock Y-pipe with some straight through mufflers.

Would replacing the original Y-pipe with something like S&S Power Tune Dual headers bring any noticeable gains in HP/TQ and/or lower heat from exhaust?

[rigidthumper]

I used those on a 2004 Ultra, passenger reported cooler left leg than the stock exhaust. Stock exhaust isn't restrictive on 80" motors.

[Finn]

That's good news. Save the money and get new tyres instead. 

[Finn]

Erm...perhaps a new set of slip ons nevertheless...

Crusher Mellows seem to be on sale. Any experience of those ie. is the sound really reasonably OK?

[rigidthumper]

Crusher Mellows are good for power, less tinny than V&H twin slash rounds.
I didn't think they were still around? (My personal fav)

[Ohio HD]

I didn't think they were still around? (My personal fav)

As far as I know Kuryakyn doesn't sell exhaust at all anymore.

[lonewolf]

CVO mufflers with Fullsac baffles and wrap work the same as the mellows.

[Finn]

There were five sets available at Custom Chrome Europe and I asked my parts guy to order a set.

[jmorton10]

You'll be happy with those.

~John

[Finn]

Thanks, guys. Mufflers arrived, looking forward to get get them on next Monday.

[bobrk1]

what  year  is  your  bike , I  think  converter  came  out  in 2010. I  just  cut mine out , I  saw in dyno  2 bikes  one  removed  the cat the other  change the  pipe  only  1 hp  difference . the  exhaust  you  show front  pipe  looks longer  than  rear don't  know  how  it  would  effect  power .

[Hossamania]

what  year  is  your  bike , I  think  converter  came  out  in 2010. I  just  cut mine out , I  saw in dyno  2 bikes  one  removed  the cat the other  change the  pipe  only  1 hp  difference . the  exhaust  you  show front  pipe  looks longer  than  rear don't  know  how  it  would  effect  power .

It's an Evo, no cat.

[Finn]

Yep, these are for my -97 Road King.

I was considering the headers but scrapped the idea and decided to keep the stock Y-pipe and change just the mufflers.

[Hossamania]

Check that header for cracks right at the Y near the rear head pipe, a known issue. Also look for a broken bracket there too, also a known issue. If the pipe is cracked, just have it welded.

[Finn]

Will do, thanks for a heads-up. 

[kd]

The stock header is actually pretty decent.  The two weaknesses that Hoss pointed out aside, if it is kept secure that may never be an issue.  Put new rubbers in the rear muffler hangers to keep the buzz away and that will help.

[CndUltra88]

Check that header for cracks right at the Y near the rear head pipe, a known issue. Also look for a broken bracket there too, also a known issue. If the pipe is cracked, just have it welded.

Good advice and an easy spot too...
Finn, I look forward to an install report and sound report too when completed.
Rob

[Finn]

Good advice and an easy spot too...
Finn, I look forward to an install report and sound report too when completed.
Rob

Will do. 

[Hossamania]

The stock header is actually pretty decent.  The two weaknesses that Hoss pointed out aside, if it is kept secure that may never be an issue.  Put new rubbers in the rear muffler hangers to keep the buzz away and that will help.

Plus one on the rubbers. They cause an annoying squeak. Which reminds me, I'm due for new ones.

[HogMike]

Yep, these are for my -97 Road King.

I was considering the headers but scrapped the idea and decided to keep the stock Y-pipe and change just the mufflers.

CA and export bikes had the cats in the mufflers.

My 1995 always had a problem with cracks at the "y".
Solved that with the true dual conversion from Fullsac. That along with the cvo muffler with (now 2" cores).
I've used this setup for years and NO more work on the exhaust system.

[Hossamania]

I'm not aware of catalytic converters being used by HD until 2009. The Google doesn't really find any before that, California or otherwise. I definitely don't know of any on the Evo motor.
Edit: some info says California touring bikes had a muffler in the right side muffler only, '03 to '06.
I still say Evo bikes never had a cat.

[Finn]

If you look in there you would think that the Crusher Mellows would be quiet - they are not. They are not loud either but they make a very pleasent low rumble and do bark when you give some revs.

And they are soooo well made. 

Installationwise nothing to it just loose the rear hanger and front clamp and switch the mufflers.

[rigidthumper]

And, IME/IMO, they work better than most anything out there as a slip-on.

[Breeze]

Finn; If you re-used the stock muffler to head pipe clamps, make sure they really cinched tight, not just the nut got hard to turn. They are designed for 1 use and often won't tighten because of the design. It's simple to make them "multi" use by grinding the splines off of the bolts. I believe a search here will bring up old posts.

[CndUltra88]

If you look in there you would think that the Crusher Mellows would be quiet - they are not. They are not loud either but they make a very pleasent low rumble and do bark when you give some revs.

And they are soooo well made. 

Installationwise nothing to it just loose the rear hanger and front clamp and switch the mufflers.

Looks Good !
Rob