Street driving impressions:
I can feel the difference made by the diffuser on the highway, starting at 100km/m (kilometers, since its Canada here. ), the car felt alot more stable at high speeds while driving straigt on the highway. Also VERY stable at high speed corners, I can now feel the car alot more, and I feel alot more confident in high speed turning, especially through those fast sweepers. This is on an AP1 without any rear wings (most of you with AP1's will know what I'm talking about, a rear spoiler is pretty much a must have), but I do have a J's CF wing going on there soon too (pics to come:D). Overall it feels great, I cannot wait to try it out on the track this summer.
potrebbe essere un'idea
,solo trovare chi sa fare certi lavori qui da noi.... 
