My car doesnt have a dualPOP setup. I have that tee you're thinking of. Ecu is unopened, not socketed or chipped in any way. Everything between the MAF and the engine is OEM, i'm talking about piping in front of the MAF. The factory airbox takes two streams of air from either side through two separate filters, Tees them together right in front of the maf thru a bellmouth, then it splits again right after the maf towards the two throttle bodies. I want to mimic the factory airbox with aftermarket piping to try and get the MAF reading as close to stock as possible so it runs right.