Slightly erratic idle after Cobra Intake Install - normal?

[MustangGT95]

Over 3 tenths in the 1/4 isn't a bad increase from an intake swap.

 

[JJ95GTID]

Over 3 tenths in the 1/4 isn't a bad increase from an intake swap.

Yep, pretty happy with it
Hoping to do better this Friday. 13s
Just installed some new pushrods which made a difference in the SOTP gauge.
Also, supposed to be about 87* which is about 10* cooler than last time at the track.
The sun is going down quicker too so the track will be cooler earlier.