i email forgemotersport and they said if i send them a picture of the czt valve. they would make me one. they sent it out for free and also a spring tunning kit. but after trying one spring and the engine managment light staying on after it died and chugged to a stop with the dump valve on im affraid to try the other springs. no one i have spoke to have been able to tell me what to do to test it for which pressure spring to use. I must admint in the 30secs it was on and when i reved the engine it did sound sweet. forgemotorsport wanted me to report back to see what spring worked. ... im to affraid to break my car...lol
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