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thank you so much for your help and to your patience if someone wants to get smart fuel i will highly recommend hho kit..
I am very satisfied with the professional products and support very quickly and professionally. Thank you very much...
I bought this hho super, installed, everything works well. Excellent kit. Thank you!..
Great job. Thanks..
I went from 27MPG to 35 MPG WOW!..
Good performance for Corvette C6..