The nostril block (anti snoring measures ?) have made no difference to the intake temps, or nothing noticeable so far.
I would like to mod further like these:
But at the same time I'm thinking I won't see any changes in the journeys I have to do (Midlothian, west Embra and the A720) on top of what I have gained so far due to techniques. This is mainly due to traffic which I can't really do anything about - no alternative routes and I don't have the flexibility of trying different times because of work and family schedules.
So I'm going to call it a day, maybe for a while at least.