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Exhaust Valve: This axle-back exhaust system incorporates factory style NPP dual mode & AFM (active flow management) exhaust valves which use the factory exhaust valve motors (not included)
This reduces turbulence and unwanted back pressure - freeing up horsepower and improving turbo response
thermistor
Maximum Corrosion Protection
ACL Porsche 944 1982-91 2
ARP Cast Aluminum 12pt Valve Cover Bolt Kit 1977-oldsmobile-cutlass-supreme-brougham-esi3105300 Exhaust Valve: This axle-back exhaustARP Cast Aluminum 12pt Valve Cover Bolt Kit
