will having a bull bar effect 5100's settings?

2005 toyota tacoma prerunner 4.0 dc, the rear (stock non tsb) is 2" and change higher than the front. I have a 3" bull bar in the front. i was thinking playing it safe and going .85 since its non tsb but do i need to possibly go to 1.75 to compensate for the weight of the bull bar. or is that a non factor? also I took the measurements with a half tank of gas and is that a factor also when figuring the front setting. sorry about the poor grammy and run ons and so fourth.. thanks for taking time to reply.

 

Pics of this bull bar? Is it the Westin type?

 

Gonna say no simply because a bull bar weighs less than most sexy taco owners. That ain't counting the non sexy ones...

 

Non issue.