Originally Posted by cossie604

Now your trying to re-open a HUGE debate on 'is surge bad or not'.....in theory its a very bad thing, it puts huge loads on your turbo when running high boost...but alot of tuners do run cars like that with out any short term problems evident. Personaly, I consider it a bad thing, I have a dump valve fitted but with a very heavy spring on it...it releases a little just to take some of the shock out but I still have the demented pigeon stuck under my bonnet sound as well

Stu.