Is it just me or is the turbo bugged, I can’t make my engine go CHOO CHOO CHOO anymore 
What do you mean by “choo choo choo”?
You mean the blow-off valve sound? Mine’s still working fine…
When I mean the Choo Choo sound I mean the blow-off valve sound (reference from MCM)
Off-topic:
The phrasing of this question is one of the best I have seen on the forums. 
On-topic:
It seems highly unlikely that something would break without an update causing it. Have you recently updated the game?
Not really, Maybe I need to lower the PSI of the turbo … IDK
Lower? I thought higher boost is how you got it in the first place? I’m not sure, I’m still learning every aspect of turbochargers.
Louder blow off sounds are caused by two things.
More open intakes (Race intakes are quite loud)
More boost.
If you’re not getting them on a high boost engine with a race intake then something is wrong.
I guess there’s something wrong with my game, should I reinstall the game ?
Nah, don’t bother with that, just wait for the soon upcoming open beta of the new version first 