advice needed,is it really worth changing standard dump valve for a modded one,what sort of realistic performance improvment would i see people...agentorange,04 octy vrs

A search first would have provided you the answers and views to this question. Its quite popular one, have a good read.

Ive just ordered a forge fmdv 006, ive read some reviews and this one came out good. I think the standard plastic ones are prone for failing, and leaking air when running higher boost.

My old octy still has the original oem plastic one, has been in 5 years now. Changing the to a better aftermarket one will yield no overall performance gains. What you get is a better sound, and maybe more responsive throttle but the BHP/Torque remain unchanged.

Try an Audi S3 oe one....not so prone to failure;)

phil