Quote:
Originally Posted by Gunkk
No. AFM = active fuel management valves are for when a v8 car switches to 4-cylinder economy mode. All SS cars with the automatic transmissions have these.
NPP = dual mode exhaust valves, which control how loud/quiet the exhaust is. This is optional on SS and V6 cars and standard in ZL1.
On an automatic SS with the NPP option there are four valves. 2 for AFM before the muffler (set#1 in the pic below) and 2 more for NPP after the muffler (set #2).
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So since I have a Non NPP automatic mine is going to have 2 AFM valves at Set #1 in your pic? and I would need to buy a borla exhaust non npp that comes with AFM valves?