Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[NSTY110RIDER]

I am thinking of getting Rinehart tru-duals for my 08 SERK, but I have heard that there is a loss of low to mid range power with tru duals.
I have a T-Max and heavy breather on it. 
What is the opinion or experience out there?

[JCZ]

I believe that's why the majority have not gone with true duals.

If you'll indulge me.....if that's the case, why would you be interested in going with true duals?

[NSTY110RIDER]

I like the look of the dual mufflers so I'm not sure if I want to go with a 2-1.
All the 2-1-2 systems seem to be for '09 & newer.

Any suggestions ??

[Fullsac Performance]

I like the look of the dual mufflers so I'm not sure if I want to go with a 2-1.
All the 2-1-2 systems seem to be for '09 & newer.

Any suggestions ??

The complete 09 exhaust can be installed on an 08 with the use of the 09 and later oil pan to provide clearance for the cross under.
They late oil pans cost around 80.00 bucks. If I'm not mistaken, the clearanced oil pans are what you get even if you order the old part number.

SG

[smkblwr]

On my 03 Road King with a 95in kit. I had Rinehart true duals and loved the look of the duals, it didn't have that bad of a dip more of a wiggle when on the stock 88in. but when i built the motor" low end torque monster that i could tour on", I changed to the D&D due to a Torque Dip from 2000 to 2500 then would climb back up at 3000rpms. It was a beautiful torqe curve other than 2000 to 3000rpms, Putting down 111hp,110 ft/lbs with the duals. but it fell on its face at 2500rpms, If I could have gotton that out it would have been sweet on the street. The torque dip was felt going though the gears, just felt like it had something then it was dead then started pulling hard, instead of a smooth pull. tried and tried "tuning, cams" to get the dip out but never could, so went with the D&D. 

[lv2ride56]

Went with Rush ceramic coated duals on my 07 running TMax with autotune and big sucker. Never felt stronger to me though on a dyno there may be some dip. Seat of the pants doesn't change running stripped with solo saddle or full bagger with the Bushtec. Benefits, for me, are better sound, retained dual look and MUCH cooler on the right side.
Go for it you won't feel it. TMax has some great maps for you.

[NSTY110RIDER]

On my 03 Road King with a 95in kit. I had Rinehart true duals and loved the look of the duals, it didn't have that bad of a dip more of a wiggle when on the stock 88in. but when i built the motor" low end torque monster that i could tour on", I changed to the D&D due to a Torque Dip from 2000 to 2500 then would climb back up at 3000rpms. It was a beautiful torqe curve other than 2000 to 3000rpms, Putting down 111hp,110 ft/lbs with the duals. but it fell on its face at 2500rpms, If I could have gotton that out it would have been sweet on the street. The torque dip was felt going though the gears, just felt like it had something then it was dead then started pulling hard, instead of a smooth pull. tried and tried "tuning, cams" to get the dip out but never could, so went with the D&D. 

Which D&D did you go with?
2 into 1 ?

[Rio]

I had the exact set up on my last bike!  I did not experience any mid range loss of power, at least noticable from a riders perspective.  Maybe on charts, but not in the seat!  I had the T-Max tuner and Roland Sands high flow air set up....sounds identical to what your thinking.  Liked the sound and performance combo last bike, and I went with the new system on my 2010!

[grc]

I am thinking of getting Rinehart tru-duals for my 08 SERK, but I have heard that there is a loss of low to mid range power with tru duals.
I have a T-Max and heavy breather on it. 
What is the opinion or experience out there?

The general consensus seems to be that "true dual" headpipes are not as good for low and midrange power as a good crossover system or two into one.  But I've also seen plenty of dyno charts with a low to midrange dip on bikes running two into one pipes.  So much for a general consensus.

A good tune can soften any exhaust induced dips, often to the point that the butt dyno doesn't even know the dip is there.  My advice, use the exhaust system you want and don't worry about it.  If at some later date you decide to convert your street bike into a race bike, maybe this stuff will be more important.

Ever wonder how we managed to survive back in the day of single cylinder bikes?  Somehow having just one headpipe feeding one muffler seemed to work OK.  Look at your Harley as two single cylinder engines with a common crankcase if it makes you feel better.


Jerry

[smkblwr]

I went with the Fat Cat with the standard baffle on the 03 Road king now detuned abit "changed the cams for a smoother pull"to 113hp and 103Ftlbs, and went with the Boss Fat Cat on the CVO with the standard baffle, when funds allow will be getting the performance baffle and retune to see if it makes a difference.

[walstibsf]

When talking true-duals, don't forget the Bassani Power curve.  The extra length of headpipe on the rear cyl matches front length, so the losses(if any) are tuned out.  A few folks on here really like 'em including me.  If I didn't have to change the oil pan on an earlier bike, the Fullsac X-pipe would be my first choice, however.

[gyver]

The complete 09 exhaust can be installed on an 08 with the use of the 09 and later oil pan to provide clearance for the cross under.
They late oil pans cost around 80.00 bucks. If I'm not mistaken, the clearanced oil pans are what you get even if you order the old part number.

SG

This is what was told also, the 08 oil pan part number ends in 09, and the 09 ends in 09A.  If I order a new oil pan for my 08 I would get the 09A part.  From what I understand the main difference is the boss and clamp for the cross-under pipe mount.

[Mr John DEUFF]

The complete 09 exhaust can be installed on an 08 with the use of the 09 and later oil pan to provide clearance for the cross under.
They late oil pans cost around 80.00 bucks. If I'm not mistaken, the clearanced oil pans are what you get even if you order the old part number.

SG

Steeve, is it also true with a 2007 FLHTCUSE2 ? I'm actually running with your true dual kit but I would like to install your X-pipe, have you got info or pictures if it has been done.

[bbrown]

I have tried both from Vance and Hines.    Very little difference if tune and dyno

[Fullsac Performance]

Steeve, is it also true with a 2007 FLHTCUSE2 ? I'm actually running with your true dual kit but I would like to install your X-pipe, have you got info or pictures if it has been done.

I just recently had a CVO forum customer ( Mike from Oak Mountain Body) put the late pan on an older 5 speed model and go with a non cat headpipe from an 09.
He then upgraded his 09 to my X Pipe. No problem going X Pipe on your 07. The 09 pan is less than 85.00 bucks new. The best deals are on E Bay for obtaining all
the misc parts. I have been picking up complete take off 09 and later exhaust with all the heat shields, cross over, hardware ect for around 150.00.
The Trike shops pull them off complete for some reason? Be patient and you can grab one. Worlds largest on line Harley swap meet.

Steve