There is something you can buy that replicates the dump valve and its available for any car!is there nething that you can get that makes you car sound like it has a dump valve?
Its by HKS and this is how it works
in the pack you get a HKS Hyper Dump Valve, Control Box and ECU link up.
It works exactly like those big The Fast & The Furious tachos with shift lights.
You link it to your ECU, set the rev limit, when you hit this limit and back off - PTTSSSSSHHHHH.
This was primarily designed for Turbo Diesels, but i've been told by a distributor you can adapt it to fit.
Price is about £349 (which i think is about 490 Euros) cough this is why they haven't sold any! cough