Quote:
Originally Posted by AlpsRider
I'm going to read those threads. Doesn't the M4 GTS have water injection making that a problem for a car with out it?
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You can tune the stock S55 to 500hp without the water injection system; BMW implemented it into the GTS to help further cool down the motor and ensure longevity..
It's an old trick they used in race cars, it's sort of a safety net but not necessary..
I say you're safe tuning up to
The 500hp Club without the auxiliary water-cooling system.
https://jalopnik.com/how-the-absurdl...1760175847/amp