What do you mean you are "limited to keep things from getting hot due to RPM?" Are you purposefully slowing down your driving because you think it's too hot, or are you getting warnings on the dash?

Adding more horsepower to the equation (boost or otherwise) would just make an overheating problem worse. Unless your heat problem is just in your head, you probably need to address that first before adding more power (and heat), right?

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2003 3.0 5MT Topasblau
Purchased in 2016 and sold in 2024
2012 35d Platingrau