[jns_e85]

This spring I will be doing the euro header swap on my ///M (along with cpv o-ring, RE trans mounts, VT engine mounts, as well as oil, diff, and trans fluids cause why not) and am wanting to do an engine tune at the same time.

At this point I am between the ESS and EvolveR tune, simply due to the ability to switch back to the stock tune for emissions reasons and they cost the same. I have the aFe CAI and will also have a modded secondary US cat section for OBD2 compliance.

After reading through the many threads, I noticed most of them are several years old now and am wanting to get a feel of what others experience over many years of use has been with your tune, associated customer service, reliability, emissions issues experienced, and any other pertinent information you wish to share that can aid in the decision making. Any feedback is much appreciated!!!