ive got just a couple of questions about this stuff... i tried a search but didnt really find the answers that i was looking for... basically i was wandering it the afc controller works really well with a mildly modified car(i/h/e) getting the cat in a few weeks... also i have a dc 4-1 header but it got scraped up badly one day so i need to replace it and i was looking at the greddy 4-2-1 header... is it any better or worse then the dc sprort version? i can find the greddy one for like 100 bucks cheaper then the dc one so if there isnt a big difference im porbably going to be picking that up... any help or info is greatly appreciated...