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I have a 98 c5 a4. Mods include vararam, ls6 intake, 80mm bbk tb, long tube ceramic coated headers, no cats, magnaflow system, nitto 555r's. Has been tuned by thunderracing in baton rouge.
I just bought a zex dry system (#82011). Only plan on going as high as 75shot. The system is a complete bolt-on and is ready to go.
Do i have to change the plugs? (they were just changed less then 200 miles ago, went with ac delco)
Do i tap the air intake or can i buy a plate?
Do i need it re-tuned?
Is this system really a plug and play system? If not what else do i need?