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Bring your car to ESS, don't know why you keep being so scarred of supercharging and keep to want to supercharge your car.
If 1 company can tune and keep it safe it's ESS. It doesn't matter wich engine you have they Will have a map for your specific engine.
If you want to keep everything extremly safe , keep your car stock, put in the garage and don't drive it.
Let's get on topic, how is the coupe coming bmwZ ?
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