[Mustang roush]

I have 2012 mustang gt with roush stage 3 supercharger just wondering if longtube headers would make a big difference in the hp.

 

[1 Alibi 2]

May get 20-25 hp out of Lt's,..................if you're running the Roush tune, a custom tune would wake your GT right up..

 

[Grabber Blue5.0]

You would need a custom tune as the Roush tune won't work. Might be worth 20ish horsepower. That's a lot for the cost of them plus installation.

 

[Mustang roush]

Thanks for your help. They are very expensive i do agree. It's alot of money for 20 hp

 

[crjackson2134]

It’s not all about the HP. LT headers move heat out of the engine faster.

 

[Mustang roush]

I didn't realize that. That's good to know. Thanks