JohnnyN said:
I was on the phone to Courtenays this moring about these manifolds and they advised that Its okay to add one but it could shift the power and would probably need remapping??
I'm sure our main man vocky can shed some light on this??
what..
got to laugh at 'it's okay to add one' 😃
the 4-2-1 tubular manifold is the best mod for any normally aspirated or supercharged 4 pot engine, except throttle bodies which are even better drool.gif
the only difference to the power is there's sooo much more of it 😃
as for a remap, mines still on the factory map and have had no problems - but does take more miles for the ecu to settle if the battery is disconnected