This kit contains a range of springs suitable for tuning either the FMDVFSIT, FMDVFSITVR, FMDVVXR valves. This kit can also be used in combination with our FMDVTUN spring kit for the tuning of our twin piston atmospheric blow off valves. This kit is not suitable for the FMDVSPLTR or FMDV001GTi.
Four springs are included within the kit, colored coded green,yellow,blue, red. Depending on the supplied original fitment this represents an increase of 25,50,75 and 100%.