Check valves:

Check valves must be used in a setup that does not utilize a Zdyne. The Zdyne changes the programming to have the MAP sensor read the boost instead of just rejecting it as a problem shown as a CEL (Check Engine Light). The Check Valves are used to fool the MAP sensor that the engine is never running boost. You can get the check valves weirdly enough, from a pet store! They are located in the fish supplies isle. They should be around the pumps, and water lines used for the fish tanks.

Gauges:

Gauges are not really required for a setup to reliably run, but not only do they provide much needed interior looks, they can save your ass from a blown engine! Some gauges I recommend in order from the most important starting at the top…

-Boost pressure (mechanical)

-Air/Fuel ratio

-Oil pressure(Electric)

-Water temp

-Fuel pressure

Most likely, your not going to be able to fit all those gauges in your car, but this is one situation where the more the better!

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