Low vacuum on start?

[pondside36]

Ok, so for a while now I have noticed when I start my car for the first few minutes I read around -9 or 10 on my gage. Once the car is warm though everything is normal at around -18 to 20 for vacuum up to normal boost pressures of 19 - 20. The car is running fine and no issues what so ever except for this slightly annoying cold start vacuum issue.

I'm leaning towards there being a slight leak on the turbo outlet side that seals up after the car is warm or perhaps it has something to do with the SAI system on start up since that runs for about 2 minutes if IIRC. Has anyone had this annoying little issue before?

Here are the engine mods:
GIAC +1, Forge TIP, Forge 007 DV, AWE FMIC, and AWE Exhaust (not that it should matter)

Thanks in advance for any insight..

[Smiley]

im pretty sure its normal to have low vacuum on a cold start. dont ask the details, i read it somewhere a long time ago

[J-jizzle]

You have lower vacuum on cold start because the car idles higher while it is warming up...

[OneBadAudi]

yup mine is the same way on the gauge when its on cold start...its normal

[A4 Moda]

It's no problem.
Especially if you've bypassed the N249 and/or N75