Originally Posted by CoolRex
I want an clarification as to why the notches aren't going to affect anything.
On a turbocharged (force inducted) vehicle, the intercooler piping has a constant charge when the turbo is in boost and a constant vacumme when not. This means for example, 15 psi is 15 psi with or without notches.
Notches effect air flow near the turbo inlet and near the Mass Air Flow (MAF) sensor. If these notches were on the intake system (to the turbo) or near the MAF sensor then this would affect how the MAF reads which in turn would affect the fuel curve of the ECU map. This is because the ECU looks at the MAF sensor data to determine what the mass of air is when entering the engine.
I hope this anwsers your question.
Fine Line Imports