H PIPE, vs X PIPE, vs CHAMBER! Our aluminum midpipe dyno shootout.
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- Опубліковано 26 вер 2024
- We did a H pipe, vs X pipe, vs chamber Dyno test.
We DO NOT do any “off-road” exhaust midpipes for any make of car. Everything we do is a universal style builder kit, you get all the pieces, you fit & weld it together.
All of these midpipe combinations were optimized for our 347” SBF, and as much as possible, all testing perimeters were held to the same standard.
Weather
Water temp
Air temp
Fueling
Timing
Etc
All repeated the same for each test to have as accurate data as possible.
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Herfurth Aluminum Racing Mufflers
#harmmufflers
To anyone on the fence, let me just say, his stuff is amazing. The quality is top notch and the sound is awesome as well. Made me love driving my car again, it sounds so good. The communication was great as well. Very easy process overall. Made my quickest pass to date after installing this exhaust.
@@LarryPfannkuche thank you for the support Sir!
Drone??
@@9858Racer A good muffler guy is impossible to find, one who understands how an exh needs to be.
Internet closed too many independent shops with cheap cat backs that rarely "bolt on".
Hard to find a good independent anymore. Last 2 guys I used for decades, fit perfect nice welds hangers in the right place. All gone now except for guys like in the vid. Its probably more but its worth it!
Great video! Keep up the fantastic work you do for the racing industry!!!
We have had good results with x pipe. Good under the curve torque. We run circle track.
Thanks for this, I'm looking into using the H pipe to have a deeper sound.
Like the H or no crossover the best, tried them all.
@@gordocarbo Holley mentioned that they have a D-Pipe it's similar to the H and a Crossover, but has a deep sound.
I'd like to know what the torque patterns look like
I would assume that this would not be good for a mid-mount turbo setup?
What are you calling the “chamber?” What does it look like? What kind of crossover is that?
@@mattleonard5268 it’s exactly that, it’s a merge chamber.
If you go on our Facebook page there’s a picture. #harmmufflers
this is a great video. im surprised at the minimal difference because i would have thought the X-pipe would have better flow, at least more than the dyno suggests. question. any benefit to crossover if the crossover is not equal length on each side? what i mean is that routing dual exhaust on 80s bronco i fabbed up for shorty headers are roughly equal length on each side but the drivers side crosses in between the bellhousing and C6 pan and the passenger side cross over to the drivers side aft of the transfer case. both have glass packs behind the transfer case and in front of the rear axle and the exhaust exits behind rear tires. so the pipes actually run near each other on the passenger side for the length of the valve body and transfer case and it would be easy to create a crossover there. but because the driver side bank has run a farther distance at that point the crossover wouldnt be the same distance in each exhaust, having to travel longer on driver side than passenger.
Here’s the thing, there IS an optimal length from the primaries to locate an X.
It’s based on the calculated wave/harmonic.
There’s also a “less than desirable” location based on the same.
As long as you can keep it in the desirable range you’re good.
7000 rpm solid roller 383...dual 3" dougs equal length 1-3/4 Torque tech X tailpipes, ultraflows, welded.
Toying with changing to a 20 oe 22 in case superturbo 3" in/out (doesnt neck down inside)
Friend has exact same car CI just tamer...pretty quiet which I want
Any appreciable difference in power in your opinion? Curious.
In Ca and the sound nazis make driving not so fun. Probably never use cutouts too much $ for little use
With a low or mid mount turbo setup would an aluminum exhaust hold up to the heat being v banded directly to the turbos?
@@jasonbrown9675 I have a customer currently driving Drag Week with exactly that.
He did stainless to get around the bellhousing then vband to aluminum, and aluminum all the way to the rear bumper.
1200 whp
@@9858Racer awesome thanks
Did you just change the crossover type using otherthe same exhaust system? Ir did you have 3 different systems each designed fornthe crossover type it is to be used with?
The “System” was just the addition of mufflers.
The same headers were used for each test.
The same small mufflers were used for each test.
I did not design new headers for each mid pipe. Even if I had the time, I still wouldn’t do that.
In my opinion, headers are the primary exhaust system, and are built as such.
Everything behind the headers is the secondary exhaust system.
This was a test of secondary exhaust systems.
I'd like to see the chamber mid. Is it similar to the old Mac prochamber?
Kind of, but different for sure
What would it make if it were just straight pipes and mufflers with nothing joining them?
most likely power and tq down across the board.
No difference.
You want some sort of crossover. The scavenging effect is important. True dual exhaust setups are dumb unless you have a very high horsepower car with high compression or boosted.
With the information you provided - more, less, and/or about the same.
“Divorced” true duals which means no crossover
This stuff should be illegal! I’m sick and tired of the village idiots running around in the middle of the night waking up children and people.
@@copisetic1104 why are race cars driving around your village at night?
These are RACE CAR parts, for competition vehicles.
If race cars are driving around you waking up your children you shouldn’t have bought a house near a race track.
If that’s not the case, you’re barking up the wrong tree.