Your videos are great! What’s your opinion about K&N air filters, are they worth they extra price?
Also my car has 34000 miles, should I change the manual transmission fluid?

they are good filters, but not miracle workers. You won't get better gas mileage or more power than normal paper filters. And if you live in a dusty place, they will clog up faster and need lots of cleaning as they are oil saturated filters. I would change manual fluid at 50 thousand miles

Sounds great! Thaks for your advice!