Z1 headers + Motordyne Manifold

dimitarm

I think i will leave the headers thing for some other time..

For the manifold i will probably pick the z1 because it is cheaper and ive never heard complains about it..

Currently i have ark dt-s ex. + berk hfc's + stillen gen 3 intakes and now when i add the z1 manifold what will happen if i dont tune my car?

Here in my country it is very hard to get tune especially for this type of car...so is it that bad if i dont tune my car?