Here is a DIY for a resonator delete I did on my 2012 Si sedan. Tools needed: -Jack -Jack stand -4 way lug nut tool -Socket wrench -10mm socket -Flat head screwdriver 1. Loosen lug nuts slightly 2. Jack up car 3. Slide jack stand under and lower car on jack stand (keep slight jack pressure under car, I do this to keep 2 points of contact) 4. Remove wheel 5. Use flat head to gently pry the middle piece of the 2 plastic retainers and fold the flap down. Where the green arrow is pull the little tab out of the wheel well shield 6. Gently pry all of the middle pieces from the rest of the retainers in wheel well shield (do not pull out the 3 that are x'd in red). I didn't get a pic but there are 3 more retainers that you need to remove under the bumper. Then fold the shield under the brake disc. 7. Remove the 2 10mm bolts 8. Remove the 2 retainers from the "snorkel" 9. Remove "snorkel" from resonator box 10. Remove 10mm bolt hidden behind the plastic piece 11. Wiggle resonator out and down 12. Here is what's left. Holy ground wires! 13. These are the parts you should have left over. 14. Replace the wheel well shield and the shield that covers the intake tube. 15. Put tire back on and lower car.