longtube headers

I installed kooks catless long tube headers on my dark horse, now i dont have power to the screen/dash, headlights wont turn on, and my key fob wont register, but you can see that it has power in other areas, as well i have a random 6 pin connection that idk where it goes to, o2 extension are...

Hey guys - I know this topic might already been discussed in this form. As I couldn’t find proper answers for my question asking here again. Some members have already added supercharger on their s650 and some are still wondering which way to go with. So it might be helpful to share your thoughts...

I am looking to install my Stainless Power Long tube headers onto my 2017 MUSTANG GT without a tune, lund told me that it isn’t tuning related but not sure because i’ve heard a lot of mixed opinions saying it’ll run fine without tune and it needs a tune..please help installing friday

Hey guys, recently scraped (lightly) on a speed bump with my 2024 GT with Kooks LTH. I hear some grinding noise from/close to the engine bay. I’m guessing LTH maybe touching the ac line. Any idea on how to fix this noise?

hello I added stainless power headers and now at a idle my car shakes is the headers hitting somewhere in the frame ? Also when I accelerate my car goes to the right and when I let go of the pedal it goes to the left ?

Hey guys, I know this question been asked many times in this form but haven’t gotten any solid responses. One of the YouTube videos recently showed adding Kooks long tube headers added 12 more hp with dyno test. So wondering without tuning available for s650 yet are they worth investing in...

Four months back, I picked up a 24' GT with around 2800 miles on it. A thousand miles in, I threw on an H-pipe and have been driving like this until 12k miles, which is where it sits now. I'm looking to throw on some long-tube headers, but I keep seeing that issues arise with the CEL light...

Hello my name is Tim Reeves and I have been reading this forum for years now but this is my first post…I wanted to get some opinions from other Mustang Owners. I just custom ordered a 2025 GT 10 speed with the performance pack. This build is going to be done soon as I receive it next year. This...

Hey guys, As long tube headers aren’t legal here in CO I’m planning on upgrading my stock exhaust on s650 Mustang GT (Active exhaust) by getting Borla cat back. As S type has more deep tone which I guess would be perfect if I had long tube headers and Atak is more louder/raspier haven’t heard...

Has anyone in CO installed long tube headers on their s650 mustang GT? Lot of performance shops I call say it’s illegal to install them in CO area. Any work around apart from me installing it by myself?

stainless works headers previous headers from the 5th gen work on the 6th nothing got re designed lethal has kooks headers that are listed 24+ gt then an off road set (15-24)gt I called American Racing and was told 5th gen won’t fit the head flanges are different….. Anyone put a 5th get set...