Had on my Civic for a couple of months and then upgraded to the new TiAl Q, this has the 11psi spring which is for vacuum of -18 to -21in/hg...aka all Honda and Acura. Absolutely nothing is wrong with it. Came with my Fullrace turbo kit. Letting it go for $145 shipped <FONT SIZE="9"><FONT COLOR="red">SOLD</FONT></FONT>