Quote Originally Posted by Golf Loon
Quote Originally Posted by Golfwise
Unless you are doing huge mods on your mk1 1.8 there is very little value in extractors over the standard system which is reasonably efficient to start with.A 2 inch system from down pipe back would help more.
Sorry wise one, but I dont agree. I hate those two piece early manifold. They always have broken studs and rusty holes in em. You cant tell me that a nice set of extractors dont make an improvement over the stock strangler manifold.
Anything that gets the exhaust gasses out quicker has to be good. BUT...a freeway is only as good as its entries and exits. You have to facilitate better breathing to get the most from them. So both of you are right, as long as the airflow into the head is also improved.
Also, there are extractors and "extractors". Just a set of individual pipes wil not always improve gas flow. The lengths and where they join are critical. (Disclaimer: I've never worked with VW extractors but have done so with Rover V8s and many years ago lots of Minis. )