Quote:
Originally Posted by red2010z
Will it require a tune after installing HFC?
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Quote:
Originally Posted by Gibby1113
Most likely. That way you can the most out of the mod and turn off the CEL light
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I would wait till you've added all the bolt-ons then have a tune. But rule of thumb - CAI + HFC + CBE + more = Need a tune. Otherwise you don't need to coz it's not going to change the A/F ratio that much.