I figured this out a while back, then made a header for my car lengthening 2 of the cylinders. And boy did it work! I have since turbocharged my car and made the manifold utilizing the same principle and now it sounds just like a wrx. The rumble, the wirring, and the woosh. It’s great!
Does that make the turbo run weirdly? Cause the air hit the hot part of the compressor in a unequal way
I wish Subaru would keep the unequal length headers just for the iconic sound and to be different. You can never mistake the WRX or STi for another turbo 4 on the streets.
Do boxer engines number their cylinders from the back of the engine? I thought normally engines number them from the front, right? If they do number them from the back: “oh Subaru, stop being so quirky” :P
I don’t quite buy the idea of the exhaust with uneven headers vs the equal length being what causes the rumble, so to speak. I actually believe that the VW boxer has a much more pleasant note and find that true whether it uses the peashooter exhaust or a header. The only difference between the motors is the firing order. VW uses a 1-4-3-2 order. The Subaru sounds to me like its misfiring all the time. I do not like it whatsoever!
oke so, you save weight on headers 2 and 4 of the left hand drawing. but you gain weight by the length of headers 1 and 3. It look equally heavy. I looove the sound but i don’t see any advantage.
Why eneven headers? Weight reduction.
So, if we use 2 pipes instead of one… we can shorten the length of the 1 and 3 headers… and then this way we do not lose out the heat and pressure on the turbo… is this how the twin scroll turbos work?
Unequal length headers, hence why the sti sounds savage and the brz sounds awful.
Talking about uneven exhaust pulses…even an old fiat 127 can sound decent with it…2 pistons removed due to seized crankshaft bearing so the engine only fires at 180/540.
Comments
I figured this out a while back, then made a header for my car lengthening 2 of the cylinders. And boy did it work! I have since turbocharged my car and made the manifold utilizing the same principle and now it sounds just like a wrx. The rumble, the wirring, and the woosh. It’s great!
Does that make the turbo run weirdly? Cause the air hit the hot part of the compressor in a unequal way
I wish Subaru would keep the unequal length headers just for the iconic sound and to be different. You can never mistake the WRX or STi for another turbo 4 on the streets.
Do boxer engines number their cylinders from the back of the engine? I thought normally engines number them from the front, right? If they do number them from the back: “oh Subaru, stop being so quirky” :P
I don’t quite buy the idea of the exhaust with uneven headers vs the equal length being what causes the rumble, so to speak. I actually believe that the VW boxer has a much more pleasant note and find that true whether it uses the peashooter exhaust or a header. The only difference between the motors is the firing order. VW uses a 1-4-3-2 order. The Subaru sounds to me like its misfiring all the time. I do not like it whatsoever!
oke so, you save weight on headers 2 and 4 of the left hand drawing. but you gain weight by the length of headers 1 and 3. It look equally heavy. I looove the sound but i don’t see any advantage.
Why eneven headers? Weight reduction.
So, if we use 2 pipes instead of one… we can shorten the length of the 1 and 3 headers… and then this way we do not lose out the heat and pressure on the turbo… is this how the twin scroll turbos work?
Unequal length headers, hence why the sti sounds savage and the brz sounds awful.
Talking about uneven exhaust pulses…even an old fiat 127 can sound decent with it…2 pistons removed due to seized crankshaft bearing so the engine only fires at 180/540.
https://youtu.be/GcKNt6QxEYE?t=80