i own an astra mk3 with some modifications on the engine
cylinder block C14SE
cylinder head NOVA 1.6 GTE
pistons NOVA 1.6 GTE
ECU programme NONA 1.6 GTE
beru power cables
pipercross air cone filter
stainless steel back box
i have Vauxhall factory manifold from a cavallier 1.6
should i change it ?
which manifold do you suggest ?
from an known brand or a handmade stainless steel ?
will the car perform better ?
will i gain in bhp and torque ?
has anyone seen any difference with a manifold like that ?