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[brewnut56]

Hey Y'all,

My new '08 SERK (black/silver)      is arriving in April.  Dealer (HD) trying to talk me out of Rinehart TD's, says they actually lower performance on the 110 . . . I'm not after absolute MAX performance, but love the sound, looks and besides . . . . how much can it take away from the 110 anyway??  I want it to run better, cooler, sound great, and haul ass . . . is there a problem??

I was intending to put them on after 1000 mile break-in, along with SERT, and SE A/C, and then dyno . . .

Live in MT at 3200 ft altitude if it matters . . . 

Any advice, comments or suggestions?

[Ghost Rider]

Most of the other guys on here can tell you the technical reasons why the dealer is feeding you a line of crap.  I will tell you that from a practical standpoint I love my Rinehart TD's, and my bike is not suffering any performance loss.  Does the dealer know you are planning on changing the A/C and adding the SERT as well?  The only reason I can think of that they might say that is if they thought you were changing the pipes without the other changes.  I suppose doing that would affect performance without a new flash to the ecm.

One other question, are they trying to sell you something else instead of the Rinehart's?  They may just be trying to steer you towards something they make a better margin on.

[kojak]

Hey Y'all,

My new '08 SERK (black/silver)      is arriving in April.  Dealer (HD) trying to talk me out of Rinehart TD's, says they actually lower performance on the 110 . . . I'm not after absolute MAX performance, but love the sound, looks and besides . . . . how much can it take away from the 110 anyway??  I want it to run better, cooler, sound great, and haul ass . . . is there a problem??

I was intending to put them on after 1000 mile break-in, along with SERT, and SE A/C, and then dyno . . .

Live in MT at 3200 ft altitude if it matters . . . 

Any advice, comments or suggestions?

I run RH TD's on both my Harley's. On my SERK, they impoved the powerband across the entire rpm range. Key is finding a good tuner. Nothing sounds like a RH TD!

[Copper/Black Cvo]

Love my Rhinehart's.........

Great Product....

[TORKER07]

1 more vote for the RHTD's

Tork

[kona76]

My 08 SERK never left the showroom floor without RH True Duals. Love everything about them so far.

The dealer may just not know what we know from experience. My dealer was ok, but thought there would not be a tuning necessary when adding a HD Heavy Breather Intake on one of my rides. It said right on the box that tuning (or airflow fuel adjustments ) would be necessary after installation. He read it and still stuck by his opinion. He was wrong.

Some dealers only parrot what they discuss as their own opinion when in reality, it's bird crap.


Mike K.
kona76

[56FLE]

Brewnut56

I would not even wait for the 1000 mile break-in, do the exhuast, SE A/C and buy the SERT now. The dealer can download one of the canned maps for the SE A/C and Rinehart TD's without doing a dyno run so your engine immediately runs cooler from day one. Later after the 1000 mile break-in you can get the dyno work done.

Their is probably a little loss of TQ when you eliminate the OEM cross-over exhuats but is it something you will notice, probably not and the HP gains you get from mid-range to WFO will put a smile on your face.   

[rednectum]

Brewnut56

I would not even wait for the 1000 mile break-in, do the exhuast, SE A/C and buy the SERT now. The dealer can download one of the canned maps for the SE A/C and Rinehart TD's without doing a dyno run so your engine immediately runs cooler from day one. Later after the 1000 mile break-in you can get the dyno work done.

Their is probably a little loss of TQ when you eliminate the OEM cross-over exhuats but is it something you will notice, probably not and the HP gains you get from mid-range to WFO will put a smile on your face.   

i would agree somewhat, but its a 08 so its runnin 255 cams. these cams will fall off before the pipes start to work. he will wind up with lower tq right off bottom, a big hit, then nothin on top.

[LabRat]

i would agree somewhat, but its a 08 so its runnin 255 cams. these cams will fall off before the pipes start to work. he will wind up with lower tq right off bottom, a big hit, then nothin on top.

So what would you recommend? I've got an '08 Ultra and looking what my options are.

[kojak]

i would agree somewhat, but its a 08 so its runnin 255 cams. these cams will fall off before the pipes start to work. he will wind up with lower tq right off bottom, a big hit, then nothin on top.

With all due respect, dont agree! Like I've said before, it depends on getting a matched header/muffler system and getting it tuned right. When you mix and match headers and mufflers, it might work or might not. Both the 07 and the 08's run the SE 255 cams and the tq INCREASED on my 07 serk from 1800 rpm up. Most people I know ride in the 2000 to 3000 rpm range and for all practical purposes, you will have a better running bike with more usable power. Now if you like to ride like every stoplight is a dragstrip go signal, you probably bought the wrong bike.

[rednectum]

So what would you recommend? I've got an '08 Ultra and looking what my options are.

if you are keeping engine stock, i would stay with stock exhaust and good slipons. rush work great for low to mid tq.

ultimately, the fatcat. you can add the left hand side ghost pipe if you want to maintain the dual look.

[rednectum]

With all due respect, dont agree! Like I've said before, it depends on getting a matched header/muffler system and getting it tuned right. When you mix and match headers and mufflers, it might work or might not. Both the 07 and the 08's run the SE 255 cams and the tq INCREASED on my 07 serk from 1800 rpm up. Most people I know ride in the 2000 to 3000 rpm range and for all practical purposes, you will have a better running bike with more usable power. Now if you like to ride like every stoplight is a dragstrip go signal, you probably bought the wrong bike.

respect back atcha!! but having seen too many true dual setups drop the ball under 3000 rpm,(right where the 07-08 gearing puts you at cruise)  i guess we will have to agree to disagree.

peace

[Lzyboy]

I have RHTD w/ SERT and love them both. Put on the bike b 4 P/U. This provided 2 things:
1. Added items to bike warranty
2. RHTD on bike allowed engine to break in w/ pipes from the start.
3. 70 at 6 gear rpms stay low
Took the wife on a ride just the other day and it rode awesome. 
Coming from a dyna super glide this bike is awesome

[kona76]

For what it's worth, I agree with both Kojak and lzyboy. I waited for a newer version of the canned map from a private source and within a 15 minute ride, I noticed the difference overall. I tried many different times to tune in the "fine art" of dyno's, had success only two times with one location, same guy.

So, I'll wait to run a dyno and have some foolish & fake tech super heat my new 110' to a range I'll never take it too... out of "above normal", then it's "tuned". With or without credentials. I'd have to hear from this site's members long before I move on a "tech" again.

Or, until it's ready. Which might take more than a mere 1000 miles.

True Duals are cool on mine, that is after an established map is installed with your hardware.

Mike K.
kona76

[kojak]

respect back atcha!! but having seen too many true dual setups drop the ball under 3000 rpm,(right where the 07-08 gearing puts you at cruise)  i guess we will have to agree to disagree.

peace

Definitely understand how tq can drop with a free flowing exhaust sytem all other things eing equal. Most riders dont understand all the factors that go into improving power in a HD V-Twin engine, like the valve overlap, reversion/scavenging etc. Just trying to point out that going from cross-over headers to true duals doesnt have to lose lowend power if you match the system to your map.