SE Street Performance Slip-Ons = Remap?
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Joined: Jul 2010
Posts: 71
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SE Street Performance Slip-Ons = Remap?
I recently acquired a low-mileage 2008 FLHT (EG Standard)...
I added the removable passenger backrest and luggage rack, and changed out the headlamp for a PIAA 6000K, then ordered the halogen retrofit for the passing lamps.
Other than that, the bike is stock; now the muffler issue:
I'm looking at Harley p/n 80491-07 (SE Performance Slip-Ons) for a slightly different sound, but if I don't change the air cleaner (and make the Stage I jump), do I have to remap?
At this time I really don't want to change the whole exhaust/intake system (and there are loads of threads about this, with PCIIIs, etc.). I don't feel like spending $1000+ to change the whole system out this season.
I've looked at different slip-ons, and many indicate a remap is necessaet on the EFI touring bikes to keep from running even leaner(yes, I know about the EPA and their draconian restrictions on menufacturers).
The bike performs great (for me), just lookig for a little better exhaust note.
Anyone out there with a similar '08 EG (RG, SG, etc.) done this?
Thanks in advance for your input...
I added the removable passenger backrest and luggage rack, and changed out the headlamp for a PIAA 6000K, then ordered the halogen retrofit for the passing lamps.
Other than that, the bike is stock; now the muffler issue:
I'm looking at Harley p/n 80491-07 (SE Performance Slip-Ons) for a slightly different sound, but if I don't change the air cleaner (and make the Stage I jump), do I have to remap?
At this time I really don't want to change the whole exhaust/intake system (and there are loads of threads about this, with PCIIIs, etc.). I don't feel like spending $1000+ to change the whole system out this season.
I've looked at different slip-ons, and many indicate a remap is necessaet on the EFI touring bikes to keep from running even leaner(yes, I know about the EPA and their draconian restrictions on menufacturers).
The bike performs great (for me), just lookig for a little better exhaust note.
Anyone out there with a similar '08 EG (RG, SG, etc.) done this?
Thanks in advance for your input...
Grand HDF Member
Joined: Jun 2008
Posts: 3,983
Likes: 2,144
From: Ohio
I struggled with this same question for quite awhile. I don't know if it will "hurt" your bike just adding slip ons, but it's already LEAN, and I wonder if this would be a good thing to do. After reading a LOT of info about the Stage One, I went ahead and "did it". It cost me about $1100, but IMHO, it was worth it. And the main reason was the cooling effect it had on my engine. I used to get roasted thighs when I rode. When I first got my bike, I couldn't believe how HOT it got. If it was above 85 degrees outside, it was miserable to ride it! every time I stopped I thought I was gonna burn up before the light changed. All that heat cannot be good for an engine. Since I did the Stage One, my bike feels at least 50 degrees cooler. It went from HOT to mildly warm. I went with slip ons, a PCIII, and SE airbox. If I were you, I'd wait and do the whole thing. It is DEFINITELY worth it.
Outstanding HDF Member
Joined: Jun 2005
Posts: 2,615
Likes: 31
From: Charlotte Area
If you think about it, by the time the fuel/air mix gets to the slip ons, it's already been burned and the exhaust pipe should not make any difference as far as rich or lean. Where it does affect a bike it in torque because of the scavenging or lack of scavenging characteristics of the pipes.
IMHO if you want the sound and can't afford or don't want to afford to do it all at once, then do the slip ons and get the sound you want, But I would not change the a/c unless you either do a remap or get a Power Commander or SERT to readjust the air fuel mix. You do run the risk of going too lean and frying a piston. Believe it or not, the fuel mixture in addition to being ignited, also provides some cooling to the piston.
Best of luck with your new muffs
Bub
IMHO if you want the sound and can't afford or don't want to afford to do it all at once, then do the slip ons and get the sound you want, But I would not change the a/c unless you either do a remap or get a Power Commander or SERT to readjust the air fuel mix. You do run the risk of going too lean and frying a piston. Believe it or not, the fuel mixture in addition to being ignited, also provides some cooling to the piston.
Best of luck with your new muffs
Bub
Road Captain
Joined: Sep 2007
Posts: 588
Likes: 2
From: Naugatuck, CT
If your just looking for a nicer sound those are great slip on's. I have them on my 06 road king. If you decide to do the A/C change over. Dont waste your $$ on the HD download, just call Jamie at Fuelmoto and he will hook you up.
Novice
Joined: Aug 2010
Posts: 21
Likes: 0
You can do slip-ons and the air intake up grade with out remaping. I did my Roadking and 25,000 miles with no problem what so ever. HD will always tell you it needs to be remapped, because it's all about the money. Also there are alot of better sounding slip-ons out there than screamin chickens and they are alot cheaper too,samson rolled thunder sound nice and deep if you want louder rineharts are the way to go,or vance and hines have a deep rumble. Good luck
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Even the motorcycle magazines are all saying that now. For the 07 and newer bikes, as long as your O2 sensors are intact, your ECM will make adjustments for air cleaner and exhaust. The stage I download only raises the redline a bit. Of course, you'll still be running in the same lean condition unless you add fuel with some type of fuel tuning device.
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