Originally Posted by 95LSv
Well i bought an JDM obd 1 b16 manifold, and the guy who had it before me made the part where it connects to the head BIGGER. Im just wondering can I go bigger or not? Will i see any results?
Why would you want to go bigger on the manifold? If anything, you should have the head port matched to the manifold to eliminate any bottlenecks that will occur.