[4DrFrontizzle06]

I don't understand why you guys would pay to have your prom reprogrammed and then "devalue" the gains by using regular fuel. As it stands right now, the owners manual - for the '06 anyway - recommends premium fuel for optimum performance.

It does say that, but I believe Reverndbiker did back to back dyno comparisons. On one run he ran regular and the other premium and the dyno results should hardly any difference here is the link, check it out.

http://www.jackphelps.com/frontier/dyno2.htm