X pipe vs stock pipe ??? - Road Glide Forums
Intake and Exhaust Intake and Exhaust Systems for Road Glides

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post #1 of 10 (permalink) Old 01-21-2019, 03:07 PM Thread Starter
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X pipe vs stock pipe ???

im hoping to do a motor swap in a few weeks or at least by next riding season and im researching a bunch of stuff for it now. my question here is, whats the difference between an X-pipe versus a stock 2-1-2 decatted head pipe? my understanding is that 09 is the last year for cat-less head pipes so mine doesn't have a cat in it so why wouldn't it already act like the X-pipe?

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post #2 of 10 (permalink) Old 01-21-2019, 03:43 PM
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It does. I had a tuner guy tell me years ago. That the difference between an 09 oem cat-free pipe. And an x-pipe. Is very little on the dyno. Maybe a couple hp. And that the average rider would not be able to feel the difference. There again. This is what I was told. So idk.
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post #3 of 10 (permalink) Old 01-21-2019, 07:23 PM Thread Starter
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I'm sure a 2 into 1 is the best way to go but I'm not looking for max power because any motor will have more power than my bone stock 96" lol.
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post #4 of 10 (permalink) Old 01-21-2019, 09:28 PM
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Quote:
Originally Posted by PBSTN View Post
It does. I had a tuner guy tell me years ago. That the difference between an 09 oem cat-free pipe. And an x-pipe. Is very little on the dyno. Maybe a couple hp. And that the average rider would not be able to feel the difference. There again. This is what I was told. So idk.
Told the same by my tuner.
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post #5 of 10 (permalink) Old 01-21-2019, 09:44 PM
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That's why on my 2011 96 inch I got the fullsac sport pipe, the upgrade for there DX pipe was only about one to two hp depending on motor size, so instead I went with yhe sport pipe which is a stock pipe modified without a cat and a 15 degree X collector in place.
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post #6 of 10 (permalink) Old 01-21-2019, 10:55 PM
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I can't say that I know any more than the average about exhaust dynamics, but I tend to agree with PBSTN's tuner guy that there wouldn't be that much difference between the 09 stock catless header and the X-pipe on the stock 96 engine. You don't mention how you are going to upgrade the engine for your bike. Are you going to bore and/or stroke your 96 engine or are you thinking new larger engine? As I'm sure you know, there are lots of choices for increasing the cubes and power for your 96 as well as many complete engine choices. The difference being a whole new larger cube engine change may mean the 96 header can't be reused. I cant say that as a fact, since I've never had a 96 engine. But now the comparison changes since the newer Harley twin cam engines put the cat back into the header and they are shaped different than the 09 header and not as smooth flowing. So the X-pipe would flow better than the decatted newer twin cam headers, how much better, only a dyno tuner could tell. There is another issue with the 103 twin cam header according to V&H. They claim the O2 sensors in the stock header are too close to the merging point of the front and rear pipes coming from the exhaust ports, causing cross contamination and inaccurate O2 sensor readings. This may be a sales ploy but V&H's x-pipe header does relocate the O2 sensors further from the merging point. Many other header makers have the O2 sensor ports very close to the engine exhaust ports as does the new M8 engines. With all that said, I had a decatted stock header on my 15 RGS 103 Stage 1 with the FP3 tuner and it ran great with very noticeable power increase. It all comes down to what you believe and how big your wallet is.

Last edited by NickyNuts; 01-21-2019 at 11:09 PM. Reason: omitted words corrected
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post #7 of 10 (permalink) Old 01-21-2019, 11:17 PM
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The 09(non-cvo) headpipes are not de-catted. They never had a cat to begin with. And the 02 sensors are located up by the cylinder heads. The 09 pipe and a 10-16 pipe are the same shape. Only difference(other than the cat). Is the location of the 02 sensors. 10 -16 they are located down by the collector. And the 09 pipe is lighter. Even lighter than a de-catted pipe. I have an 09 pipe. Im hanging onto it incase I ever do an engine build.
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post #8 of 10 (permalink) Old 01-21-2019, 11:56 PM Thread Starter
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I'm going with a crate 124 from S&S and want to retain the 2 mufflers sticking out the back. In my opinion the little bit of hp gain with a 2 into 1 isnt worth me buying new bags without exhaust cut outs (because in my opinion it looks like crap having the cut outs and no pipe to fill it) or buying a ghost pipe.

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post #9 of 10 (permalink) Old 01-24-2019, 11:56 AM
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It all depends on the application. On a stock 80Hp bike there may not be huge difference, however as the power levels increase the benefits of a properly designed pipe for its given application increases exponentially. This is the specific reason we offer 2 different head pipes for both Twin Cam and M8 motors; the standard Jackpot 2/1/2 for stock up to 130Hp and the XXX pipe for applications over 130hp.
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post #10 of 10 (permalink) Old 01-24-2019, 07:13 PM
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What if your still
Stock but have future plans to go well over 130HP have to buy one then the other?
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