WRXCLASSIC Posted May 2, 2014 Share Posted May 2, 2014 Hello, I have a 6k 4 plug ECU for sale. It was used in the V3 WRX Classic which normally uses a Z4. The 6k produces more power. I also have an almost brand new Collins dump valve. Please reply if you are interested, cheers. Quote Link to comment Share on other sites More sharing options...
jaydog82 Posted October 17, 2014 Share Posted October 17, 2014 What sort of sound do you get from the dump valve. The hiss or the 'squiggly' sound as i can best describe it :) also how much. Thanks Quote Link to comment Share on other sites More sharing options...
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