Ok, as odd as this sounds, I have been dyno tuned by Jeff, and recently I have just had Vitviper clean up some stuff in the calibration. (Even Jay contributed something to my cal.)
Just to preface, the tune that I received from Jeff Evans was awesome, and the service that I had received was nothing short of exemplary.
Now, we all know that having your car tuned by a professional on a dyno is the best way to get your car running to its max potential. (Granted that the tuner is good, I.E. Jeff Evans)
About 5 months have passed since I've been tuned by Jeff. When I was tuned by Jeff, it was about 30 degrees out. So I figured it would be a great idea to revisit my calibration and see if anything could use a change or two. (Its now in the 70-90 degree range.) Also, over this 5 month time period I've had tons of time to observe the quirks and short comings of my car and its tune. Most of these things were relative to every day driving conditions, partial throttle tuning, etc. Enter VitViper.
My car was running great before, and now it's running even better. The partial throttle was cleaned up greatly, I now do not have "over run" as much as I did, and over all, driving my car under normal driving circumstances (daily driving for instance.) is leaps and bounds better.
Anyhow, the aforementioned is just one of the reasons you may want to visit these gents regardless of if you have been tuned on a dyno or not.
Firstly, these guys know their stuff. They're pretty quick at reviewing your calibration and/or datalogs and pointing out/ fixing any shortcomings.
Secondly, I have found that many times a professional tuners time, or time spent on a dyno may be limited. The smaller details such as partial throttle, etc. are usually left out. Vit and the rest of the gang are very good at fine tuning elements such as these.
Thirdly, I've personally met/spoke with some of these guys in "real life". They are a great bunch of guys with a vast amount of knowledge. Also, when they are tuning your calibration, they will go as far as to tell you in great depth what they are changing, and why. So 99% of the time you end up learning stuff along the way.
To summarize, both Jeff Evans and the guys at "Etunez" are good, knowledgeable people. As I've stated previously, you can't go wrong with either.
Thanks,
K