Quote:
Originally Posted by Hadalet
Why would an UEL header affect the tune? Or the supercharger for that matter? Just wondering
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Not exactly sure. Since my header is catless, therefore less restrictive, I imagine they can increase the air/fuel mixture (guessing).
I know it affects the tune because when I went through Delicious Tuning a stage 1 tune was all stock and stage 2 involved an aftermarket header.
Maybe someone else can explain better? An aftermarket header also helps level out the torque dip we see, too.
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