Dustin I would take a look at upgrading your injector spider to this:
http://www.napaonline.com/Search/Detail.aspx?A=CRB238887_0275667328&An=599001+101998+50014+2014025
I put this on my 98 Yukon about 4 months ago. I picked up about 4mpg and it has alot more power. If your interested I can get it for you alot cheaper than the price shown.
http://www.napaonline.com/Search/Detail.aspx?A=CRB238887_0275667328&An=599001+101998+50014+2014025
I put this on my 98 Yukon about 4 months ago. I picked up about 4mpg and it has alot more power. If your interested I can get it for you alot cheaper than the price shown.