Got a few questions
I've got a mk4 astra 1.4 16v and I'm setting about trying to get a bit more poke out of it
I read up somewhere that a manifold upgrade is good, and the best one to use is one off a 1.6 I believe as the cat isn't on the manifold, but is further down the pipe and should make it a fair bit more responsive.
Does the manifold line up with the original studs on my 1.4? both on the block and the bottom of the manifold?