C55 Kleemann Header install advice :)
I have my headers now , and i will be installing them on my stock C55 soon .
I have a few question for those who know how :
There is only one O2 bung per side on Kleeman , i gues i need to keep the 1 st stock sensor on there , the one that is located pre cat ?
( will get the Kleeman tune Asap after installing headers .)
Also can i use some coupler( 60mm) from header end to stock exhaust tube and not welding ?
Lastly , i dont think i can get a torque wrench in every nut of the header , how strong do you tighthen those copper nuts ?
( new nut and exhaust seal)
Thanks alot !
Last edited by edgar86; Nov 9, 2016 at 10:04 AM.


