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Do I need a custom tune for my 5th gen ranger? I currently have an SCT 93 octane tune loaded in it. I have added a 3-in exhaust, upgraded charge pipes, high flow intake filter. I am fouling out spark plugs. Which means it's running rich. I'm currently on some NGK LTR number fives. Any wisdom out there?
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Leo Stapleton posted about 1 month ago Admin
Yes it would be recommended to get a custom tune with those mods if you are having issues fouling plugs, the preloaded tunes will not be adjusting for those mods correctly.
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