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[North Star]

I would never consider running CFRs or High Outputs due to their terrible low end performance.

I dont believe Rineharts with 2.25" cores are in the same category as the above.

When I ran my catless OEM headpipe with the rineharts and my 255 cam, I had great results with no dips or tq loss. That all changed when I switched cams and put the DX on.

So no, I wouldnt run an exhaust that kills performance.

Come tune time, I think we will try a couple combos and see what the real difference is.

[SneakyPete]

Sounds like a plan

[SneakyPete]

X 2     Or throw away thousands of dollars in motor work in favor of an exhaust that they like the "looks" of more than performance. 

X2   I was lucky in that I got both performance and good looks.  Referring to my exhaust pipes of course!

[SneakyPete]

I will be taking the Road King I bought last month down to Steve pretty soon. Then I'll have two GMR 113's to play with. 

Joe, if you are going to have all these 113's, you need to ride with the fast group!

[GMR-PERFORMANCE]

I would never consider running CFRs or High Outputs due to their terrible low end performance.

I dont believe Rineharts with 2.25" cores are in the same category as the above.

When I ran my catless OEM headpipe with the rineharts and my 255 cam, I had great results with no dips or tq loss. That all changed when I switched cams and put the DX on.

So no, I wouldnt run an exhaust that kills performance.

Come tune time, I think we will try a couple combos and see what the real difference is.

The issue comes with the stock headpipe not be a free flowing ex. so in the end that will cost you power on both Hp and tq. Now the tq may hit very hard up front but it will not be able to pull out as far with a better head.  For what ever reason with that set up it worked better at that time however I can tell you that the core size

[North Star]

You didnt finish your sentence Steve, but I assume you were saying a 2.25" core is too large, even with the more restrictive OEM pipe.

Can you recommend a 2" core muffler other than the Crusher or Fullsac? I believe you said Rush Big Louies dont do the best.

What about a Drago 2-1? Would that perform well with your 113 build?

[GMR-PERFORMANCE]

Well a 2.0 rush muffler ( not the big louie) works very well..  As for the DX and the 2.25 core in the rinehart may work ok I looked back and I thought the testing I had done was with a DX but in fact it was not. That bike had the FM XXX head pipe on it , and it did not bring the tq in for chit down low.  So in fact the Rinehart may work  BUT the tq curve tends to suffer a bit down low with the larger core mufflers based on what I have seen . back to the 2.0 louvered 100 % of length of muffler deal. Now some mufflers have 50% of the core punched and the rest not and that in the larger CI can create tuning issues and lack of power 

[North Star]

How would a Rush/Drago 2-1 with 2.5" baffle work?

If a 2-1 is recommended, would the stepped or non-stepped pipe be preferable? (Non-stepped is the Rush standard or Drago S/C/S-4).

[GMR-PERFORMANCE]

The 2-1 with teh 2.5 baffle would work fine, Now here is a 113 600 cam zilla pipe NO head work with 58 TB , as you can see it still has good low end even with the perforated core baffle which I am not a fan of

[North Star]

Wow looks nice, despite the Boarzilla I think 

So which 2-1. Stepped or non-stepped Drago/Rush?

[GMR-PERFORMANCE]

I only have testing on the Rush wrath pipe , I have not tested Franks new stepped pipe. So with that said in the Rush line up the wrath with 2.5 would work fine. Now with that said Frank has shown some nice numbers with his own version , It is just that I have not run his stepped pipe. I posted that show a larger stepped 2-1 for example.

With the 113 I think the DX and your Rineharts would be fine if you have the 2.25 baffle and not the 2.5  version.

If you want the 2-1 then again I think I have shown what you can look to see there as well.   

[JoeVibe]

Joe cannot wait to make the new RK purr

Steve - I can't wait either! It's purring now, you need to make it roar! You've spoiled me with my Ultra. The RK feels like I'm dragging an anchor behind it!
Things are finally starting to get closer to normal here at home. I'll give you a call in the next week or two to finalize the details and I'll be heading your way.

Joe, if you are going to have all these 113's, you need to ride with the fast group!

I may just have to give it a try and see if I can keep up, Pete. Should have enough HP, not sure about the skill level. Guess we'll see. (Just don't tell Janet. )

[brassspike]

Yep, 5,600 miles total

Hmmm, Would be about the same for me. Then again, if someone else wanted to share,...... I have an enclosed trailer set up for two??

[GMR-PERFORMANCE]

We have more than enough room here for the trailer to be stored on property  without issue as well should any one choose that route and want to lighted the load on the way back.

[North Star]

The 2-1 with teh 2.5 baffle would work fine, Now here is a 113 600 cam zilla pipe NO head work with 58 TB , as you can see it still has good low end even with the perforated core baffle which I am not a fan of

I think I remember when you posted this graph on another thread where you said you were impressed with that tune. I'm not a fan of D&D as I dont like the sound, but I do like the Dragos 2-1's. My riding buddy from FLA runs the Dragula 2, and I like the sound of that, and its reputed to perform well.

I was thinking about going 2-1 awhile back, just for a change really. At the time, I was leaning towards the non- stepped version, as I thought it tuned easier and was better for low end tq.

The bonus is a new 2-1 wont cost me anything once I sell my 2 sets of mufflers and headpipes.

If not, Im glad to hear my DX and Rineharts are a decent set up after all. Ill have to give this some thought.