Chevrolet Corvette Stingray C7 Forum - View Single Post

purpleRac3r · 01-26-2015, 06:13 AM

You are correct - the V4 valves are separate from the NPP valves ans ALL Stingrays have them. The V4 units are located above and forward of the rear axle, the NPP units are located to the rear of the mufflers, and can actually be seen by looking into the exhaust tips. As your car did not have the NPP system from the factory, you will not have the wiring and programming for it. As a result, what you hear is what you get.

01-26-2015, 06:13 AM	#18
purpleRac3r Drives: 1974 & 2014 Corvette Stingrays Join Date: Mar 2013 Location: Troy, Mo Posts: 623	You are correct - the V4 valves are separate from the NPP valves ans ALL Stingrays have them. The V4 units are located above and forward of the rear axle, the NPP units are located to the rear of the mufflers, and can actually be seen by looking into the exhaust tips. As your car did not have the NPP system from the factory, you will not have the wiring and programming for it. As a result, what you hear is what you get. __________________ '74 Stingray coupe, heavily modified, as seen in August 2011 VETTE magazine, 2014 Stingray Z51 #196, ordered 02/11/13, built 08/29/13, Museum Delivery 10/04/13, driven daily!