Exhaust manifolds

[alex_gray255]

[m4tti]

gacksen said:

diameter isnt more than 2.5" as for the x pipe could improve things. as for the back collector dont see any gains there.
some gains can be had at the ports as the original welds are soso. maybe there is something to gain but if.......

put the car on the same dyno as before and after.....

Hi Reiner

Those merged collectors willl definitely help as they'll maintain gas velocity rather than abruptly hitting a large void. Like in the standard manifolds. It will also alter the sound.

Pretty similar to NA F1 manifolds.