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Well....the commute in to work today left me scratching my head. After putting in the grill block the car seemed to take a noticably less amount of effort to go down the road, butt dyno effort is measured by the sensation of acceleration. This morning it just seemed to take a bit more "pedal" to maintain speed. I really wish I had a scangauge now....
Now let me qualify what I've done. Over the weekend I changed the oil, replaced the 180 degree thermostat with a 195, put on a lighter rear sway bar and put the drivers side front spash gaurds back on for winter, I also found my tires psi had fallen from it's summer, 45psi to 32 psi, so I bumped them up to 45psi again. Mondays commute felt great and it felt very easy to maintain speed. The only change I made last night was the HD lip. I know with all of the changes, I won't be able to get an answer and the volitile temps here will cause fluctuations as well. So I might not have a real answer until spring time or if a scangauge becomes available sooner...We'll see how the next few tanks average out.
I attached the lip exactly as "christ" said above, round part up, fastened thru into the bottom of the bumper.
I was thinking the flare out at the end might force air out past the wheel, vs. slaming into it...???
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