Saleen,
You misinterpreted Nicks tone. He's very helpful and knowledgable. It's just that most people on this site are of the offroad variety. And to many of us, racing a Jeep is like offroading a Corvette... but to each his own. This website has room for everyone and we are happy to have you! Besides, power and torque are important on or off the paved road. So stay on, continue to share your knowledge and thoughts, and keep in mind that we are all here to help.
As for the 4.0 engines, they are torque monsters. When stock, with stock tires, I used to beat Euros all of the time. Remember, efficiency is just as valuable as engine size.
Now, about your v8...If you run a search, I recall someone talking about how much a ripoff the jet chips were. I can't remember who. But like any mod, it may cause your engine to run differently than intended and shorten it's life span. It seems most people are happy with the K and N FIPK. I don't personally have one, but the only issue I've heard is foriegn matter (mud, dirt) inhibiting the filter and airflow due to it being a cone filter and not in a protective box. But, since you are usually on the road, seems like a great upgrade.
Also, there is a question as to wether or not they filter well when clean. Athough, I've heard you only get around 6-10 hp. The deal is to remember that you have to upgrade both ends, intake to exhaust.
Check this link out concerning K & N:
http://www.bmwe34.net/E34main/Upgrade/Air_filter.htm
Try the search. Welcome aboard! :wink: