I replaced my coil packs with the genuine ford one's and it made a huge difference a lot crisper so much so I had to have my tune adjusted because it was hitting the limiter in drive. But after 2 or 3 months they are rooted again also I was at heathcote when the G tech car ran the 9.2 and the motor looks nothing like in the u tube video bigger turbo, nizpro plenum and it had no coil packs had leads running up from underneath the plenum somewhere.