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anyone ever have to add fuel when going colder on plugs?


Mattsv8

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thats what i was thinking. same plug gap. both were .027. both r5671 type plugs but one a 9 other a 10. i thought colder would be richer as well. but it droped over 2.6 points on fuel. weird as shit. yes ngk is 11 coldest 6= hottest. thought it would be worth a shot since i was thinking of upping boost. but cant due to the weird loss of fuel.
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ive ran 8s for a while never a issue and a set of 9s no issues but then 10s and now im wayy lean. changed fuel pump too. but no help. 2 a1000s and im lean. base fuel pressure is the same at 10psi and 1;1 with boost. i guess ill try the 9s and see if its any change if not ill try 8s. got to figure it out by the weekend.
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