Just lifted my JK, Not a happy ride, comments

I went down the same route you did. I have an OME/ARB lift as well. You'd do well to check the part numbers on the springs - ARB makes at least three different spring rates for the front and three more for the rear - at a minimum, they should match what's in the ARB application guide for your Jeep. I have the 60066 and 60067 shocks as well.

The bottom line is that this is going to be a firmer ride. How firm depends on your springs and shocks together. If you refer to the OME catalog you'll see most of their front springs fun about 12.5% stiffer than stock and their rear springs are 60-70% stiffer than stock. I don't care what you do to the shocks, that is not going to be a softer ride.

That said, my Jeep corners much "flatter" and with more stability now that it features stiffer springs and better shocks. If you're having issues with steering and drivability it might be time to look at an alignment, specifically the caster seems to upset drivability with Jeep lifts. How much lift did you actually net? Mine was actually about 75 mm, not 50 mm.

I'd also point you to some of the vendors on this site...they have a lot of experience with Jeep lifts in general and some with this specific lift in particular. I am sure they'd be happy for the opportunity to compete for your future business by helping you with your issues here.

Installation Details

Hello,
To start I want to thank everybody who has replied to my post and is trying to help, I really appreciate.
Sorry that I didn’t include much details of what installed when I started the post.
Please see scanned copies of the “OLD MAN EMU suspension installation record” and a table with all the parts that were installed on my JK.
To be more specific about the driving performance with the new suspension, one of the biggest differences or problem is when I am driving on the street about 40 to 60 Km and I drive across imperfections on the road or a not very smooth area I feel I don’t have much control of the car. The steering wheel vibrates much more than before.
Also, a lot of replay said change check air pressure, I have the 35 PSI on the tyres that come from factory with the 2012 JK. Can you please be more specific about the recommended pressure?
Thanks again
Carlos

Hi Carlos
With those measurements you have close to a 3" lift. At 3" you will generally have less than 3 deg of caster, and your alignment shows you have 2.5 whish is way to low. You need to purchase either adjustable lower control arms or AEV drop brackets to bring your caster back to around 4.5 deg. If you plan on doing lots of offroadind, rock crawling and playing, i would go fr the LCA,s, however if you only plan on light to moderate trails and touring, i would go the brackets. Contact Jeep connection in Melbourne or CRD Stu in Brisbane for the brackets, or DBOR in Melbourne for the arms. I would also suggest a front trackbar, DBOR supplies both the PPM and Teraflex bar.
I would suggest you are not planning much offroading as ARB have supplied you their short shocks, which are only slightly longer than stock. You would probably only have 1 or 2" of down travel a hat height. If you are planning lots of offroading, i would insist ARB swap them for the mid travel shocs up front and LT in the rear.

ARB or OME do not supply a great package in Australia. They sell the kit as a 2" as that is all we are allowed, but te kit generally gives you 3", supply shocks
That are to short for a 3" lift, as the additional components that you need with longer shocks such as brake line drop brackets etc are illegal in Oz, and do not supply anything to fix caster, as most oftat is illegal as well.

Oh yeah, most of run the stock tyres around 30 psi.