Too old to do a tuning career?

I just realized that tuning cars was my to go career since last year but never got into it since I am thinking of age limit. Is 35 late on game already?

There is no age limit to tuning. So I would say you could have 50+ years of tuning if you want to,

As David said - the only limits are your desire to learn and your ability to do so. 35 is actually relatively young* and I would expect many here would have been older than that when first learning.

*Gale Banks, one of THE diesel gurus, has just turned 80, for example, and he's still working hard in the industry.

Thank you for the response, I almost gave up pursuing tuning since most of the tuning shop owners started at a young age

I was never an automotive guy (not even close) until 33 years old when I bought Honda crx delsol... Now I'm 52 and known as one of most reliable engine builders in my area, learnt how to tune engine software, built fastest Mitsubishi Airtrek in the world with 9.5 ET... It's never too late)