[SLNT930]

1987 930.
Build is as follows:
Mahle 3.4L kit
K27-7200
993 Super Sport cams
Rarlyl8 exhaust
Turbokraft Intercooler
TiAL wastegate

After installing the intercooler I'm getting low cold idle and an idle that slowly creeps up when hot. Higher the hotter the oil gets - roughly 1200rpm at near 2nd mark on oil temp gauge.

Checked all hoses - OK (will recheck)
Checked AAR function - OK
Checked plug wires - boot on #2 was broken. Replaced. Plug looked OK. No change in idle.
Unless I'm misreading the IR temp gun the left side of the exhaust manifold seems to be quite a bit hotter than the right.
A bit of stumbling at low load through the RPM range.

vacuum limiter? What's the test procedure for this?