8-4-1 Headers (Video)

[galaxy]

Can there really be than much influenced sound difference between the current headder offerings? It's my understanding the Kooks 350 set up is clean sheet; not borrowed/rebranded coyote parts. And the Kooks on my '12 GT is the best sounding coyote I know of. Sure, all the pieces go into the final sound, but....IDK

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[honeybadger]

Can there really be than much influenced sound difference between the current headder offerings? It's my understanding the Kooks 350 set up is clean sheet; not borrowed/rebranded coyote parts. And the Kooks on my '12 GT is the best sounding coyote I know of. Sure, all the pieces go into the final sound, but....IDK

it can affect it quite a bit. however, I will say almost all of the manufacturers i've seen make the same long tube headers. When I was designing mine, I looked at pretty much all the big players. they pretty much all pair the same cylinders together at the collector in the same order (which is not optimized for the Voodoo firing order), vary 3-4 inch in length between shortest and longest and follow the same rough routing path.

there's some stuff you can do to tone down rasp - like stepped headers, equal length, proper mid-pipe sizing, etc. that a lot of the mass produced stuff doesn't touch because of cost.

 

[galaxy]

That’s what I meant. Sure something different can be done, but between the current name brand options, you’re splitting hairs.

 

[honeybadger]

That’s what I meant. Sure something different can be done, but between the current name brand options, you’re splitting hairs.

These kooks headers are pretty sweet. def where I'd lean if I was buying an off the shelf kit

https://kooksheaders.com/products/11542300

 

[TreeFiddyAre]

In my own opinion I don’t think you will like the sound of the Ultimate headers catless. If you go that route you will 100% need resonators. Those headers with high flow cats and the factory R cat back id imagine will give you a sound you’ll love. Catless takes away from a properly tuned exhaust sound in my opinion. You can get way too raspy and obnoxious FAST. I know the exotic guys do it all the time but these Ford engines are way different. Just my opinion for your exhaust journey

I have the Corsa Double Helix coming and I have resonators that will be going on to help remove some rasp needless to say the TreeFiddyAre has been sitting there undriven the amount of disappointment is crazy.

 

[Kobi Addiction]

@TreeFiddyAre Tough to hear the 8-4-1 system wasn't to your liking once installed. I can only imagine the disappointment! I was tracking this thread last year and forgot about it.

I run the following: Stainless Works Headers --> Corsa Double Helixx X pipe --> OEM mufflers

I've ran this 3" setup for many years now with my Whipple. I tried H-pipes and resonators in different combination, and stopped with what I mentioned above. With Hi-flow cats installed, it sounds good, not extremely loud. Running catless, its extreme and can get raspy depending what rpm and gear you are in when giving it gas.

Goodluck finding the sound you want. I'm sure you'll figure it out.

 

[galaxy]

These kooks headers are pretty sweet. def where I'd lean if I was buying an off the shelf kit

https://kooksheaders.com/products/11542300

Oohhh, the Kooks are nice. I have them on my '12 Coyote (not that same part number, but you get it). Top shelf. Fit is amazing. Kooks headers, high flow cats, their X pipe, and Borla ATAK mufflers - it's the best sounding Coyote I know of. Actually quite exotic at full send. And like I said above, I have no empherical evidence to back it up, but I heard Kooks is clean sheet design just for the 5.2 and not a Coyote caryover. And they're a home town company, sooo....

 

[TreeFiddyAre]

@TreeFiddyAre Tough to hear the 8-4-1 system wasn't to your liking once installed. I can only imagine the disappointment! I was tracking this thread last year and forgot about it.

I run the following: Stainless Works Headers --> Corsa Double Helixx X pipe --> OEM mufflers

I've ran this 3" setup for many years now with my Whipple. I tried H-pipes and resonators in different combination, and stopped with what I mentioned above. With Hi-flow cats installed, it sounds good, not extremely loud. Running catless, its extreme and can get raspy depending what rpm and gear you are in when giving it gas.

Goodluck finding the sound you want. I'm sure you'll figure it out.

The disappointment has honestly been tough to swallow, but at this point it's time to move forward and focus on getting the car back to where it belongs — sounding like the machine it was built to be.
I'm going to try the catless setup with the Corsa Double Helix and add the 10" resonators at the end of the X-pipe. It may still be a little aggressive (and probably not exactly "neighbor friendly" ), but I already know it's going to be a massive improvement over where the car sits right now.
Down the road, once the ESS arrives and the car is making some real power, I want to experiment with the Formula Z-pipe setup and longer resonators and potentially the mufflers that come with the 8-4-1 as they are valved and 3" through. I think that combination could be really interesting with the blower
The journey continues. Sometimes the best builds are the ones that make you question your life choices halfway through.

 

[WItoTX]

I did stainless works catted, with the quieter stainless work full 3" exhaust. I love the tone it has, but it's loud. I'm considering a resonator to tone it down, but the actual sound coming out is phenomenal. With a helmet on, it's very tolerable. But driving around pits no helmet, man I couldn't do long stretches in the car.

Granted I went cross plane, but it would sound great on the voodoo if you could just turn down the volume knob 5-10 db.

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