Need some technical advice on exhaust - I just put on a set of Rinehart true dual

[elementscifi]

I had my local dealer install a set of Rinehart True Duals on my 2006 FLHTCUI two weeks ago. Now the power envelope is very different from what it was previously.
Before I put on the Rinharts this was my motor and exhaust system.
I had a Screaming Eagle 95" kit installed two years ago and also at that time I installed a set of Vance & Hines Classic slip ons. The dealer dyno tested my bike and the chart read 87.38 hp and 92.37 torque. in fifth gear it seemed to deliver best roll on around the 3000 rpm range while running about 120 kph.
The dealer talked me into purchasing the Rinehart's, the clincher for me being that it would extract the last ounce of power out of my 95" kit for more power and torque. The new dyno test/chart run indicates 95.29 max hp and 96.95 max torque but the interesting thing, at least to me is that the power/torque on the throttle doesn't kick in until I am around the 3500 - 4000 rpm range. That is OK, it certainly does seem to have more 'punch it' accelerating in whatever gear I am in. Here is my dilemma and I am wondering if anyone else has experienced this. I seem to have a pocket of exhaust fumes in my driver's space that wasn't there before. I had the dealer check it out and they said no leaks. Has anyone else had experience with this or with Rineharts in general?

Thank you for your help and comments.

Chris in Red Deer, AB

[TXCHOP]

Sounds like classic Rhineharts over scavenging on a smaller build. They always make great peak numbers, but makes the bike feel like you just put in too big of a cam. Gearing down will help if you keep the exhaust.

As for the pocket of exhaust, not sure there. Does it feel like that all the time.

[Montyl]

In the installation instructions for the Rinehart TD's they say to use a bead of high temp copper Permatex in the muffler before slipping it on the pipes. You could try this and see if ir makes a difference. Although I suspect that what you smell is the new pipes heating up and outgassing a little. Remember when these pipes are put on they have seen absouletly no heat after the chrome process. Since a motorcycle is not enclosed you are not going to have carbon monoxide build-up and moving down the road any dangerous gases are going to be swept away.

[Shoe]

I put on a set of Rinehart True Duals and a Arlen Ness Big Sucker Intake myself two weekends ago. I know I did it right as per the instructions because I did the R&R and I dont have any issues with fumes at all.

You may want to make sure the dealer did the install correctly.....

I trust dealers to do oil changes and interval services and thats about it. Everything else I do myself (including tire changes). I just dont trust someone else to take the care that I would.

That being said, you could also wait another week and see if the smell goes away.

Dave

[elementscifi]

Thank you for the comments and information! I started noticing the fumes with the first ride. Today was the first long ride I did. I will wait and see what happens in the next week or so and see if it goes away.
Again, thanks so much for the information.
Chris

[bwana01]

An ultra will create a slight vacuum right behind the bike because of the tour pack which can suck that exhaust back towards you. It can be particularly bad if you have slash cut mufflers with the slash up. You can also notice the smell more when you are decelerating and the exhaust is not being blasted out of the pipe.

Bwana01

[roxbury241]

How do you have it mapped?

[claydbal]

for true duals, ITS NORMAL.

[Jeepin_Lawyer]

I had the exact same experience with true dual pipes. They are the best looking and best sounding style of pipes (IMHO), that being said, they also rob you blind of your low end tq.

[TXCHOP]

Originally Posted by Jeepin_Lawyer

I had the exact same experience with true dual pipes. They are the best looking and best sounding style of pipes (IMHO), that being said, they also rob you blind of your low end tq.

Yup i agree. Unless you have a 107 or better with decent compression, the bottom end will suffer with them. They look and sound great, but produce peak numbers only.

[elementscifi]

Thanks for the information. The EFI was re-mapped by the dealer using my Race Tuner kit, but they also had (so they claim) a high profile, specialist come up from Texas to do some training with their techs on how to adjust beyond the tuner kit. Something to do with pulsing??

[Montyl]

If the bike runs fine, feels fine and you have no decel popping and you are happy with it then they did a good job.
Keep in mind you will start lots of long discussions about numbers and TD vs 2-1 exhaust, but as long as you are happy with what you have who really cares which is better. What many people dont contemplate much is the numbers that a Dyno gives you on the print out is max horsepower and max torque which equals max fuel usage. Myself I am thrilled with the Rinehart TD's and stock dynojet map for the 08 touring, and TD's. It all nets me about 42-44 mpg, compared to the 32 after local tuner got done with it.

[elementscifi]

Thanks Montyl,
That is good advice. I will let you know how I make out.

Chris

[max6550]

I had a set on my 95" Mackie bagger, with the same results you're having. Ran OK from idle to 2500, from 2500 to 4000 the engine flattened right out. My 5th gear roll on from 50mph was humble. That being said, after 4000 the bike ran like a scalded dog. I called Mackie he said Rinehearts can be very picky as to the cam you are running. I decided to change out the exhaust.

[mungo]

Originally Posted by elementscifi

The new dyno test/chart run indicates 95.29 max hp and 96.95 max torque but the interesting thing, at least to me is that the power/torque on the throttle doesn't kick in until I am around the 3500 - 4000 rpm range.

You're going to see peak hp/tq at this range, if not slightly higher, with any engine build. It is just the physics of the engine design. There was a formula that showed the TQ and HP curves meeting at about 4500 RPMs. Pretty neat thing if you're into that type of math. The formula escapes me now.

You're perception of more power at 3500 rpm is most like the absence of low end torque missing from the True Duals.

Adding performance parts to a bike is very much about how you ride or how you prefer to ride. If you like to ride in the higher RPMs, or you want a bike that sounds good. Rineharts are the way to go. They are great pipes, I had them on my '06 FLTHCUI. If you prefer low end torque, then a crossover or 2 into 1 design is best for you.

I'm not really familiar with a pocket of air as your describe. The air that gets to your chest and face comes up from the lower front of your bike, right in front of the gas tank.

However, the smell you are reporting is typical of new exhaust, as someone else pointed out.

But check out several TQ and HP curves. Some engines may produce more or less HP and TQ, however, most of these curves are very similar.