How to use: First, make sure you have the necessary custom tuning for your vehicle. Then, carefully install the DPF pipe, EGR plates, and gaskets included in the kit according to your vehicle's engine layout. The kit is guaranteed to fit, but take your time during installation. Attention: Custom tuning is a must. Without proper tuning, the vehicle may not perform well or could even cause damage. Maintenance: Since the kit is made of 304 stainless steel, it's relatively durable. However, periodically check the gaskets for any signs of wear or leaks. If you notice any issues, replace the gaskets promptly to keep your engine running smoothly.