Most probably you need engine repair. Check catalytic converter, by the way, I want to add a few words about engine replacement in racing cars, as it might also relate to performance. When you replace the engine in a race car, it’s not just a swap but a real upgrade, because it’s all about maximum power and fine-tuning the car. Just like a clogged catalytic converter reduces performance, an untuned engine in a race car will also fail at high speeds. When I bought spare parts at
www.supertechperformance.com and had them replaced in one of my racing cars, I was thinking not only about the power itself but also about fine-tuning the cooling and exhaust systems, just like with the catalytic converter. Every detail matters for speed and reliability.
