Found out Doug Thorley is making Tri-Y Headers..

[rabbit_eater]

Hey 6G,

Does anyone here have experience with tri-y headers? I spoke with Doug Thorley Headers about a set of headers for the '15 GT after finding that they make some sweet tri-y's for the '11-'14 cars found here: WORX SERIES HEADERS

Copy of my email response from them:

Colin,

Thank you for your interest in Doug Thorley Headers,

We do have a set of headers for the 2015 Mustang 5.0L, they are really new to us and haven't had the website updated yet. THY-293Y-L-C is the new part number and list at a cost of $799.00

There is a down side to this, these are long tube headers that include the connector pipes which remove your first two catalytic converters making them illegal to California. The only way we could sell this to you is that they would have to ship out of state.

Also, currently do the relative new nature of the product we do not have any header photos beside fit up pictures.

Let us know your thoughts or if you have any questions please feel free to contact us at any time.

Best regards,

DTH Customer Service Team

I gave them a phone call after receiving this email and found out that they are 14g mild steel, ceramic coated inside and out, and have a liftetime warranty. They have 1-7/8" primaries to 2-1/2" Y-collectors into the 3" merge collectors and connect to the factory catback.

Thought I'd throw that out there for anyone that wants to try and be a guinea pig for this new product. Interested in the difference in power gains versus the normal Kooks/ARH/SW style 4-1 collectors. The product isn't listed yet but if you give them a call they have it available for purchase. They are mild steel but with the ceramic coating and lifetime warranty it doesn't really matter for me here in CA besides the fact that I'd have to get them shipped out of state due to EPA audits and other bureaucratic BS... the price is definitely right on them!

Cheers! :cheers:

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[BMR Tech]

I know Justin at VMP Performance tested a set on their racecar.

I am not sure what the results were, but I know they ended up going back to the stock headers.

 

[rabbit_eater]

I know Justin at VMP Performance tested a set on their racecar.

I am not sure what the results were, but I know they ended up going back to the stock headers.

Interesting that they just went back to stock instead of something else. I may have to speak to them to see if they ever put them on the dyno. Part of me wants to be the guinea pig for these but I'm not ready to throw money down on headers just yet.

 

[GTBOB]

Tri-Y headers usually bolster the mid range power on low revving engines. Where as a 4-into-1 setup are used on higher revving engines for more mid to higher rpm power increases.

Tri-Y headers are good for trucks....

 

[rabbit_eater]

Tri-Y headers usually bolster the mid range power on low revving engines. Where as a 4-into-1 setup are used on higher revving engines for more mid to higher rpm power increases.

Tri-Y headers are good for trucks....

This is the general consensus that I've heard but the unique high-rpm characteristics of the coyote is something I haven't seen tested with these headers as of yet. As my DD, I would certainly appreciate the low-to-mid torque range increases, but also want to keep high-rpm nature of this motor intact. I don't assume these would have the 6,000rpm+ gains as a set of ARH or Kooks headers, but still think they might show significant gains over stock due to the increased primary and collector sizes.

 

[beefcake]

This is the general consensus that I've heard but the unique high-rpm characteristics of the coyote is something I haven't seen tested with these headers as of yet. As my DD, I would certainly appreciate the low-to-mid torque range increases, but also want to keep high-rpm nature of this motor intact. I don't assume these would have the 6,000rpm+ gains as a set of ARH or Kooks headers, but still think they might show significant gains over stock due to the increased primary and collector sizes.

in all honesty, it doesn't make alot of sense.

if your more worried about the torque, stick to the 1 3/4 headers with the 4 into 1, these "are" hi revving engines,

your other option, is the pypes stepped, we do alot of those 1 3/4 into a 1 7/8

best of both worlds.

http://teambeefcakeracing.com/pypes-6gen-mustang-exhaust.html

 

[rabbit_eater]

in all honesty, it doesn't make alot of sense.

if your more worried about the torque, stick to the 1 3/4 headers with the 4 into 1, these "are" hi revving engines,

your other option, is the pypes stepped, we do alot of those 1 3/4 into a 1 7/8

best of both worlds.

http://teambeefcakeracing.com/pypes-6gen-mustang-exhaust.html

Thanks for the link beefcake, those stepped headers are pretty sweet.

 

[beefcake]

Thanks for the link beefcake, those stepped headers are pretty sweet.

especially for the price with our forum special

 

[rabbit_eater]

especially for the price with our forum special

Do the performance connect headers bolt right up to the corsa without any cutting/welding? Are these available with high-flow cats?

The price is indeed quite nice...

 

[beefcake]

Do the performance connect headers bolt right up to the corsa without any cutting/welding? Are these available with high-flow cats?

The price is indeed quite nice...

yes, both ways.

the corsa shortens by 4.5" when you pull out the factory connection part.

you would need to replace that with a piece of 3"

and yes, cats available

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