Quote:
Originally Posted by Hydratech®
Oh yeah - has anybody here worked with the variable orifice valve (VOV) AC Expansion / Orifice tubes? Of all of the hundreds of A/C conversions from R12 to R134a I have performed in my younger years working as an ASE Master Tech, this (new to me) variable orifice tube technology sounds really cool (pun intended lol) - thinking of giving it try, looking for any possible feedback on how this may have gone for anybody else that may have tried it?
Let me know guys - thank you kindly!

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Are you talking about the variable orifice tubes that go into the factory GM orifice opening? I've used them, but I can't say I saw a huge difference.