As title says, would all of these combined actually have any effect on how power would be produced or anything that i could feel?
Lightweight Bottom Pulley..
Lightweight Crank Pulley..
3 Inch Stainless Steel TopHat & PowerPipe (Replaces plastic/silicon hoses)..
Or would it all be money wasted?
(On a 2006 Astra SRi 2.0 Turbo by the way...)