exhaust slight purple color

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djvmax07

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put on new exhaust and morleys jet kit. The pipes at the rear cylinder are turning a purple color is this ok ? do i need to adjust something?
 
Have the Voo doo full exhaust. morleys jet kit, a/f 2.5 turns, stage 7 needle with clip on 3rd slot.
 
sean more fuel would that mean more turns out on the a/f screw? I have all of them set at 2.5 turns
 
What Sean meant to say is that colorful exhaust headers may be caused by a lean condition. Take it to a AFR sniffer to make sure or check plugs.
 
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