that ticking noise is most likely your exhaust leak, I had that problem on a race car, I had to take the header off and examine it agains a straight edge, then build it uop and grind it smooth.
make sure that you use a fresh gasket with every mate and demate of the header adn a good sealer, and let is cure before starting it up.
H2 Black Lux, Air Suspension, AEM Intake, soon to be blacked out...
Black 02 Fatboy
300ZX TT 500Hp, 10.5Sec completely Blacked out, Wolfe Sport 600 Turbo, Billet Aluminum FlyWheel, Carbon Claw RPS Turbo Clutch, Dual Pop Intake, HKS Intercoolers/Exhaust
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03 H2 Black Lux, 02 Fat Boy, 06 R1, 08 Ultra Classic, 39' Erickson and one scurvy dog
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