Cold Start Engine Noise?

[4LTURBO]

Hey, Since putting a pod on the GTI(for spool noise) im getting a really loud noise on cold starts, almost like a big exhaust leak, but it only lasts for 20-40 seconds... any ideas what it is and how to stop it?

[SoVeReIgN]

Nah its normal, engine has VVT which opens up the exhaust valves to suck exhaust back into the engine on cold start to reduce emissions.

I usually let mine sit idling till this calms down (atleast) or usually a minute or two.

[Kai]

Its part of the car. I dont know exactly what it is. But you cant stop it. It does it on the stock airbox aswell. Just not as loud.

[4LTURBO]

hmm, sounds like a truck... oh well, might just have to get over it lol...

[kelvniii]

Its happens to all of the 1.8T engine (as i know), my friends Jetta 1.8T and Golf 1.8T GTI, Of cuz mine does that too, but after a min or so it will back to normal~ no worrys about it!