[johnatwork]

I worked at a speed shop in my youth and at the time I was into Paintball so I had an idea.

We tried something similar to good effect, but we unfortunately had no good knowledge on how to refine it. It's hard to just shoot compressed air into the manifold and not have it blow back out of the intake. Either way we figured out a way to increase the volumetric efficiency as well as gains from running cool dense air. We were very close to pre-spinning the existing turbo/super setups and experimented with that as well. We gave up because Nitrous oxide at the time was much easier to work with and popular, and the tanks we had to experiment with was tiny compared to the large scuba tanks.

We also tried using compressed CO2 bottles to spray towards the intercooler to cool that down considerably, that worked decently as well, but no good data to support.

[arprocter]

Volvo came up with a way of spooling the turbo by injecting compressed air into the exhaust manifold

https://www.carmagazine.co.uk/car-news/tech/volvos-turbo-lag...