On anverage how much gain in hp/torque are seen when installing either/both short and long tube headers on the 04-08 F150s with a 5.4? I dont believe the published numbers and i havent found any real answers.

Just wondering for a possible "future" upgrade cuz my manifold(s) may start to leak...ya leak thats it...

 

LT's:

http://www.troyerperformance.com/cgi...no=122-622100s
https://www.f150online.com/forums/ch...longtubes.html

More gains if coupled with proper custom tuning - and in some cases required


Shorties: next-best thing to Bupkis ... (but as a leakiy/cracked OEM replacement are okay - almost as much effort to install and almost as costly as a set of Pacesetter LT's)

www.google.com