Let me pretense this by saying that I have searched about this both within Yotatech and on the Internet and have come up with muddled results at best.

I bought an 87 22r pickup in Pagosa Springs, Colorado from a retired Toyota mechanic from Durango.

The elevation in Pagosa is 7100 and the elevation where I'm at now is 3900. The truck sounds like it's running fine.

I have read the bluebass 22r FAQ and Have a rough idea of how to adjust these things although I'm not sure whether it's necessary.

Do I need to adjust anything? Are there any long term problems associated with leaving it be?

 

As long as it runs good no reason to mess with it

 

you can get away with more timing at higher altitude with less effective compression