Hi, got a few mods planned while the vectra is off the road for an engine rebuild. Planning on pre-cat removal and K+N panel filter at the mo.
Would it be worthwhile fitting the 2.4 Inlet Manifold and what gains am i likely to see? Or would i be better off going for the saab aluminium inlet manifold that zafiraz22se has for sale?
viewtopic.php?f=6&t=12344
Many thanks