I still cannot justify in this matter...:hmmmm:
coz sometimes I can see mud/dirt which dirty the outer/behind the intake plenum...
if I use open trumpet but with ITG 'Burger' or Pipercross filter... the issue related to heat comes in mind...
further search show up to 5bhp loss due to open trumpet...
so I decide to use aftermarket trumpet inside the ori intake plenum and use ARC Intake Chamber to increase the air storage...
now I'm using HKS open filter, coz ori intake box cannot support at high rpm...
still didn't have time to DIY 'heat shield'...
pcmod...
I've search about the Teflon thermo gasket... however need to customise as overall availability is not for 4AGE...
another thing, you might need to relook at the nut and bolts as the height increase...
if not because of this, I might already use a modded 'intake gasket x 2'...:hmmmm:
coz sometimes I can see mud/dirt which dirty the outer/behind the intake plenum...
if I use open trumpet but with ITG 'Burger' or Pipercross filter... the issue related to heat comes in mind...
further search show up to 5bhp loss due to open trumpet...
so I decide to use aftermarket trumpet inside the ori intake plenum and use ARC Intake Chamber to increase the air storage...
now I'm using HKS open filter, coz ori intake box cannot support at high rpm...
still didn't have time to DIY 'heat shield'...

pcmod...
I've search about the Teflon thermo gasket... however need to customise as overall availability is not for 4AGE...
another thing, you might need to relook at the nut and bolts as the height increase...
if not because of this, I might already use a modded 'intake gasket x 2'...:hmmmm:
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