1320 optimum bypass valve r53 brand new

[kevs cooper s]

NOW SOLDas title optimum bypass valve by 1320 brand new 50 pounds http://i1069.photobucket.com/albums/u466/kes1275/_57MY1L34DP_zpsuht9r1vz.jpg (http://s1069.photobucket.com/user/kes1275/media/_57MY1L34DP_zpsuht9r1vz.jpg.html)

[EcosseGP]

What does this actually do or achieve ?

[kevs cooper s]

butterfly spring goes weak on the std item not closing fully so losing boost 1320 modified ones are fitted with stronger springs and are setup to fully close as per 1320 tuning on their home page

[EcosseGP]

I'll check it out and see what it says ...

[kevs cooper s]

no probs

[kevs cooper s]

NOW SOLD