^That sounds entirely plausible, nice job thinking outside the box on this issue! I do have a hard time seeing how the Stillen manifold can be more restrictive than the OEM version but it could also upset the way the air moves through the plenum and into the intake runners.
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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
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