Ok...just to make sure I'm reading this right...If you have the Stillen G3's, and HFC and CBE combo you're good...not running too lean and won't need a tune...but if you add a header or anything else more on top of this three combos you will need a tune right? Did I read that right?
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2013 Nismo Z34 / FI TT #091 / IG: @lilzilla_z34
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