The power numbers seem to be in JR favor and it's a little cheapier. Yes you have to grind and hack the ECU but hey it beats waiting 3 to 4 months to pay more for comptech and then waining again for a reflash chip. On the moss webb site they have dynos, photos, faq, and the full intstruction manual. Comptech can't even get their web site working. Why should I give them my money to site on for months, and months and months...