Well, just to add a little more fact to the mix, here is what Porsche says about engine operation and gear shift points from the '99 owners manual:
"
The specified maximum rpm figures should not be exceeded when shifting down, exceeding the safe operating limit can result in damamge to the engine.
For smooth shifting, observe observe the following shift points (applies to standard gear ratios only):
Maximum downshifting points
- 5th to 4th ... 120mph/193km/h or 5100rpm
4th to 3rd ... 84mph/135 km/h or 4700rpm
3rd to 2nd ... 56mph/90 km/h or 4400rpm
2nd to 1st ... 35mph/56 km/h or 4000rpm
Minimum upshifting points
- 1st to 2nd ... 15mph/24 km/h or 3000rpm
2nd to 3rd ... 25mph/40 km/h or 2900rpm
3rd to 4th ... 40mph/64 km/h or 3100rpm
4th to 5th ... 45mph/72km/h or 2500rpm"
Now it seems to me, by strictly observing this, you'll be in the 'disputed' range and not lugging the engine.
