WHERE DOES A EGR VALVE BLANKING PLATE GO ON A PEUGEOT 407 2.0 HDI 136 (NO WARNING LIGHTS}

WERE DOES A EGR VALVE BLANKING PLATE GO ON A PEUGEOT 407 2.0 HDI 136 (NO WARNING LIGHTS) Showing were it&fitted to my Peugeot 407 SW 2.0 Hdi 136 2006. EGR blanking plate is only £3 off ebay and is a 5 minute job! Only tools needed, small 10mm spanner and a small 10mm rachet with an extention. Advantages, smother drive, acceleration and increased Mpg!! ** Update: Increase In 1 mpg (urban) ** ** Note that I¬e a mechanic & not responsible for any works carried out. These are things that have worked for me. **