FlipZ71

34's on 4.5 slightly adjusted up

With 34 inch nitto

Yours looks right. mine is a 4.5 zone with the bds 4-6 2.5 coilovers. Slightly adjusted up. Center hub to fender measures 29 .

That will learn me to say (ANY) insight would be appreciated

Hey Nasty , what's the scoop on the cognito UCA ? I am geting close to changing mine out and the cognito is one I have been considering. Any insight much appreciated.

I'm sure if you had an issue later on , dealer would use it against you.... I set mine up the same way... cut the mid pipe before the 3rd cat , ran 2 2.75 pipes , 1 X pipe , straight out back with 2 Flowmaster FX series mufflers .... Sounds great...

So you did a burn out and damaged your truck ? Disabled traction control before burnout ?

Hit 80,000 miles and springs started the creaking..... I intended awhile back to change them out anyway but held off. May revisit that now...

Tune

Let me clarify... mine vibration was only in 4 wheel drive. The front drive shaft is what had to be clocked correctly. Shouldnt be any reason to remove the rear. But yes all I did was unbolt the drift shaft on pinion end , rotated the yoke , bolted it back up , problem gone

Knowles , On my 2015 I had started with the same set up . I had the same vibration but only when I put it in 4 wheel drive. The issue turned out to be the drive shaft was not marked before removing. So when they reinstalled it , was not clocked correctly. The lift instructions for zone 4.5 state this step clearly. The install shop never read it. Anyway after I flipped it issue was gone. This may not be your issue but it's a start. Read through the instructions and question everything you'll find it. Oh... and I also had the additional leaf but used a smaller block.... rear pinion angle is good.

I checked it this morn.. below is the average . running 70 I was 19 for a few miles then back to red lights

Yeah the custom tune was my favorite mod , more so now with the gears. Mpg... lol well I'm I spirited driver , enjoy my mods without thrashing. But my average is around 16

No , he didnt take it in. Just keeping an eye on it

My 2015 5.3 at 80K miles Lowest I see on mine is 30 Hot. I do run a 5w30 but when I switched there wasnt much of a difference in pressure , 2psi. Have a buddy with 2018 , 6.2 8spd His drops between 15 and 20 when hot .