Originally Posted by cgibbs7
My 07 gt currently has shorty headers. Should I go long tube? Would it make my car louder and add more hp?
Is it worth making the swap?
Coming from someone that had an 06 GT with both shorties and long tubes, I would say the long tubes are definitely worth it.
When I had the shorties, I could tell a noticeable difference in sound from the stock manifolds, and knew there would be a couple of additional horses even though I couldn't feel them.
When I put the long tubes on, the difference in sound was substantial, it was much louder than shorties and not even comparable to the stock manifolds. In addition to the massive sound increase, I could feel the car pull harder in the upper RPM band.
If you really want the best sound you can get for these cars, long tubes are the way to go!
I hope this helps, and if you have any questions, feel free to get in touch. Good luck!