This is posted on http://www.eil132.com/8.html, is it true ?


Dump Valves

Let's get one thing straight, RST's don't need dump valves. They don't do anything for them. No anti lag, no extra turbo life, nowt. On an MFi set up your more likely to have problems than sound like a bus, which is what most people buy them for! Because the KE Jetronic system has the airflow meter before the turbo, the dump valve can draw in air resulting in idle/leaning off problems. Do yourself a BIG favour and don't bother buying one unless noise is all you are interested in. Even on a Cosworth it's only really needed when using a T4 turbo or bigger. It's a big con! Use your money elsewhere.