This guy was probably choking his poor truck by the way he mounted the x-pipe on his exhaust system.

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Syscrush@reddit

OK, now I wanna see an Engine Masters video about this.

Honestly, my expectation is that it would make no measurably difference at all, but I'm prepared to be proven wrong.

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The crossover should be between the left and right pipes and not the front and rear. So it should be 90 degrees from what it is there. The hole between them is for a balance and not meant to carry the entire output of the engine. It also looks hand-made and not something you'd see at a performance shop.

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Syscrush@reddit

I agree in principle. In practice, since watching Engine Masters bash a giant dent in an exhaust primary and not measure any decrease in power it's hard for me to think that this is actually going to make a big difference.

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venisonvegan@reddit

My take on that episode was that the exhaust primary they were using was probably way too big in diameter. It would have been interesting to see if they had gone to a smaller primary if that had potentially increased power through better velocity/scavenging but then bashing that may have decreased power.

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somethink@reddit

They did in a later episode and still no difference. It was based on comments pointing out that exact thing

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venisonvegan@reddit

Huh interesting I must have missed that episode

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carzonly@reddit

Yeah, Engine Masters has proven that exhaust systems on 4 stroke gasoline engines aren’t as important as we thought, but people will still love to fall back on old tribal knowledge.

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Caligulas_Prodigy@reddit

Don't forget the crossover pipe on the new ~800hp Corvette. It's almost completely flat for ground clearance.

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Fryphax@reddit

"Should" and "Makes No Difference" are two totally different things.

Don't get it right, get it running.

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anonymouslosername@reddit

Except Brule retired, and the (good) Motor Trend shows are ending. 😣

https://www.reddit.com/r/Roadkillshow/comments/1cyw5dr/brul%C3%A9_is_retiring_and_engine_masters_is_cancelled/

https://www.reddit.com/r/Roadkillshow/comments/1gunjrv/cancelled_shows/

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BillBillerson@reddit

It's all come back to youtube in different forms. Freiburger, Finnegan, Tony, etc all have their own channels now. Back to more grassroots production quality which imo I'm all for. No engine masters equivalent though. I think they were kinda getting thin on ideas for that anyway.

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WolfvonDoom@reddit

Dulcheck installed a Dyno recently...

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ctennessen@reddit

I predict it to come out in bite size portions that you have to pay for multiple channels to see your favorites.

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anonymouslosername@reddit

Haven't checked out Tony's stuff yet (I need to), but Freiburger's is killer. Most of the off the cuff stuff that made roadkill what it was, with a dose of history replacing some of the craziness that went on with him and Finn playing off of each other.

Some good music thrown in too.

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Axeman2063@reddit

Pretty sure they did a X over, and H over, and some other ones...no measureable difference.

Haven't seen the episode in a while though so I could be wrong.

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FrameJump@reddit

So I'm no mechanic, but I would think this set up would force the two exhaust paths fight one another at that first junction. I just imagine water going down those pipes, and it would naturally curve and try to go back up the other pipe coming off of the engine, which would then be redirected by the flow of that pipe back the other way. So if one side has less flow than the other, that's a problem in itself. I'd think you would want as little resistance as possible. That's assuming there's a hole in that middle section in the first place, too.

I dunno, just an idiot with a keyboard here. The picture someone else replied to you definitely looks better, but I'd be interested to see the actual differences in these two setups while they run.

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Neptune7924@reddit

Turbulent airflow creates drag, and likely back pressure if your scenario is correct. Be interesting if someone with a degree in fluid dynamics could break it down.

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FrameJump@reddit

Be interesting if someone with a degree in fluid dynamics could break it down.

Absolutely.

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Ser_Random@reddit

I do not have a degree in that, but I do have a degree in automotive and high performance technology. It all depends if its open on the inside or not, but I would assume that if it is not that it would be sending exhaust back to the engine on whichever side has less pressure based on the engine firing. This would definitely create some issues with combustion, and maybe a bunch of crankcase pressure.

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Syscrush@reddit

I get it. I just think that fluid does a good job of moving from a high pressure area to a low pressure area. Of course, it wouldn't be surprising if this caused some kind of reversion that messed up scavenging and resulted in a power drop. But if I had to put money on it, my (small) bet would be that it just wouldn't make a difference.

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FrameJump@reddit

I bet it would make a difference. Now that difference may be negligible depending on the application, but I'd still expect a difference.

It kinda reminds me of a redneck Tesla valve in its current state.

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trd86@reddit

I'm with you

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TheAksu@reddit

Flowmaster indeed

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RileyDream@reddit

Realistically, the restriction in this exhaust will come from the crap welds more the sideways xpipe

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Dustycartridge@reddit

Porsche has a similar x pipe and one of my motorcycles had it too

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Lxiflyby@reddit

D I Why

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HTTP_404_NotFound@reddit

Honestly, while it should create a large restriction...

I also wouldn't be surprised if it was a pretty negligible difference.

We know dented headers make a negligible difference.

And, if you have ever seen a truck manifold turbo setup, let's be honest.... lots of sharp bends. Lots of small tube... not to mention, the turbo literally does a 90 to exhaust flow.

Pressurized air behaves interestingly.

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