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Thread: No Nonsense Fuel Return for 8th gens

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  1. 03-31-2014 #1
    Jus abase
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    Do you need to tell the ecu anything when u do a return from a returnless. I'm now getting afr of 17:1 at idle and dump rich at cruz. I'm also reading after a sidewinder and all of my down pipe
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  3. 04-01-2014 #2
    Turpid Porpoise
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    Quote Originally Posted by Jus abase View Post
    Do you need to tell the ecu anything when u do a return from a returnless. I'm now getting afr of 17:1 at idle and dump rich at cruz. I'm also reading after a sidewinder and all of my down pipe
    You will need a retune. You are affecting the flow of fuel into your engine. Did you alter your FPR when you added the return line?
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