So after gathering some info. about Superchips, I was wondering if it really is worth it for me. I have a 04' BT 4X4 w/ the 2* timing advance, AEM, cat-back exahust, TB spacer. What I have gathered is that the Superchips compensates for the 2* timing advance and takes away the WOT restriction (15mph opposed to 40mph for the 2wd). Is there anything else I'm missing? I could see if I had a 2wd (WOT restriction @ 40mph and no 2* timing advance) getting the Superchips. But, Is there gonna be that much of a gain over what I have already (nice feel of the pants test)? I just want to make sure it's worth the $200 or so for a used one. Thanks for any help.