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[wachuko]

If you do a search on the DX pipe, you will find a thread where Steve did a comparison between the CX and the DX on a 103 with woods cams. Got gains of 2hp and 7tq. That sounds like a pretty good benefit to me.

From just a different under crosspipe??  I was just going by what FullSac had on their website... and outside that cross pipe, I could not read any difference between headpipes.

To the OP... just give the guys at FullSac a call and find out.  Unless the DX headpipe is different (stepped design)...no way that the crosspipe made a difference of 7ft-lbs of torque...

[DOWNTOWN DON]

Just telling you what I read. For pretty much everything you want to know about the "CX" VS "DX" read these 2 threads.

http://www.cvoharley.com/smf/index.php?topic=78946.0

http://www.cvoharley.com/smf/index.php?topic=81269.0

[wachuko]

Just telling you what I read. For pretty much everything you want to know about the "CX" VS "DX" read these 2 threads.

http://www.cvoharley.com/smf/index.php?topic=78946.0

http://www.cvoharley.com/smf/index.php?topic=81269.0

   Thank you!!  So there is more to the DX than just the crosspipe.

The new DX Pipe features a full round crossover and new collector.

And the first few pages of the first thread was funny as hell... 

I know what you want to see and what your trying figure out. Is the DX worth changing to if you already have the CX? Tough question to answer because results will vary. My most recent dyno testing has shown best numbers with the larger 2.25 cores in combo with the DX on the Stage I CVOs. The TQ came in a littler earlier with the 2.0s but peaked slightly less. I did a pair of 2013 Stage CVO's last week with the DX and 2.25 cores. Highest TQ numbers to date with both bikes peaking at 118 TQ and 115TQ at 3000 RPM. Big TQ early is the DX trait.

So to the OP, since he is buying a new system, best to go with the DX setup. 

[cmcarr88]

thanks 66don66 and wachuko .. .. been doing a lot of reading up on them also ..... I have decided on the DX now just debating the 2.25 or 2.5 ..... yes ..... I like them loud ..... 

[FLSTFI Dave]

thanks 66don66 and wachuko .. .. been doing a lot of reading up on them also ..... I have decided on the DX now just debating the 2.25 or 2.5 ..... yes ..... I like them loud ..... 

Fullsac makes great stuff.  Been using it since 09,  so thats 3 bikes for my wife and 4 bikes for me.  I would not go any larger than 2.25, as most the really good tuners will tell you you loose back pressure and will give up some torque with the 2.5.  If having max torque possible is not as important as more noise then go with the 2.5