longtube headers

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...