So I recently finished an Evan's etune and wanted to share my experiences.

There are a lot of etune reviews on this forum but mine is different because I used a software dyno program to track the results along the way. Im reposting this here because theres more traffic here than there is in the N/A forum, but Ill just give a summary of the thread here and link to the original thread in this post for anyone who wants to see the whole journey.

Basically I really enjoyed the whole process, watching what Jeff did with each new calibration help me understand how to use the AEMPro software better than I probably ever would have figured out on my own, and I had a blast analyzing each calibration and the logs that I made.

Heres the final results of the back to back runs that I did. For those who are questioning validity, I did multiple runs on each tune, and took the "most middle" line since the program doesnt have an averaging feature, but know that each run maybe varied by 2-3whp at the most. Each run was done with coolant temps at +/- 2 degrees of 180, starting at the same place in the road, in the same lane going the same direction and within maybe 30 minutes of each other at the most.



I think I probably could have gained a bit more power in the midrange if I changed headers and retuned. Im currently using a 4-1 header which yields high end power versus a 4-2-1 header that gives better low-midrange power. This is shown with the peak torque being at 8.2k and not really falling off at all after 6.8ish.

Vtec was lowered to 3.8k, but again I think with a different header the lowered vtec would yield better results.

All in all Im quite happy with the results. At the end some of the WOT changes he was making were effecting my daily driving AFRs, but after the whole process it was fairly simple for me to go back in, log the problem areas and make the appropriate changes to the fuel map to work out all the little lean/rich spikes.

This is definitely a great tuning option and definitely really good value for the money spent ($250 for the whole tune, EMS not included obviously). I would definitely recommend it to anyone who doesnt have a good tuner close to them, or doesn't want to shell out the big bucks to get an actual dyno tune. Jeff got my car running great on the AEM EMS, and I doubt I would see much power gain if I were to get it finished up on an actual dyno.

If your interested in the whole process, check out the main thread here!

*Side Note* The actual numbers are different at the beginning of the thread because I hadn't figured out the proper correction factor to yield correct(ish) number results. Its still not known how accurate these numbers actually are, but I plan on hitting a true dyno in the sometime in the near future to verify the numbers validity.