986 Running hot (Found solution)

[Hello.AmeerM]

Posting this for posterity:

Symptom: 1999 986 running with temps regularly above the "180" on the temp gauge.

Mods: after market headers, cat delete, RoW programming, after market exhaust, low temp thermostat.

Solution: moved from Peak pink coolant to Prestone for all vehicles.

Result: stable temps from the third mark to the right edge of the "180"

Notes: the Peak was purchased mid 2020, water wetter was added later on with no change in temps. This is my second 986, previous ran on porsche coolant then eventually prestone after changing the pump, both gave a low and stable temp.

For a long time I thought the temp was just the result of having a less restrictive exhaust.

If you're having problems with your temps then try changing to a different coolant.