Before we start here is some information on how to get the most out of your tune.

Thank you for your order, we look forward to working with you:) Once this form has been filled out it will be sent to one of our tuners and they will put together a customized basemap using dyno tuned parameters based on your specific vehicle and modifications. This process does take some time and we work very hard to start the tuning process with the safest, highest quality, and best performing customized basemap. We strive to get our new customized basemaps out as fast as possible, that in mind we do not want to sacrifice quality, performance, and safety, for speed. After this form has been submitted it will take 24-48 business hours (Monday-Friday) to receive your customized basemap. Orders placed over the weekend will have a customized basemap by Tuesday evening at the latest. Thanks again for your order:) -The E-Tunez Team

The key to tuning your vehicle is making sure that your vehicle is up to date on all general maintenance. It’s best to reference your owners manual with your current mileage. That said, before starting the tuning process it’s best to have fresh oil, new OEM oil filter, good spark plugs (always best to start tuning with new plugs), and a fresh tank of premium gas. If the vehicle has been stored or sat for a while run a full tank through the system before starting the process. We recommend replacing the factory primary O2 sensor if the car has over 60,000 miles or is over 3 years old as the accuracy may not be the greatest. We typically recommend replacing them as there are gains with a new primary O2 sensor. We can often tell their health or age if we see a “delay” in readings, even if a CEL is not tripped yet. If the car has a silencer on the exhaust you will need to decide if you want to tune with the silencer in or out. Maintenance jobs like a valve lash may sound standard but will have a huge effect on your tune, so best to complete before starting the process. If you have any questions please contact info@e-tunez.com or your tuner.

Order Information

Before we can start working on your map we will need some more information from you.
  • (Example: #ET-4084)
  • for Ktuner users, starts with 37820-
  • Please include a list of all modifications including non-engine modifications such as, coilovers, motor mounts, clutch/flywheel upgrades, etc. Knowing anything that is not factory will help us tune your vehicle to to its fullest potential
  • If you are a returning e-tunez customer, please list any or all changes in modifications to the car.
  • Take this opportunity to let us know if you prefer Speed Density vs AFM based tunes, or a JDM vs USDM ROM. Please note some vehicles are restricted on the type of rom they can run. If you are not sure what to say here, you can tell us that and we would use our experience to pick a proven map type for your car.
  • We will need the approximate location and elevation of your daily driving to reduce the learning time for IAT's, elevation and vacuum table indexing as we will pay particular attention to those affected tables and may adjust vacuum table indexing to better suite your location.
  • We will also need to know the Fuel type you are running, the octane rating and ethanol content. Ethanol will affect the target AFR's. For example minimal content ethanol fuel may perform best at a 0.90-0.92λ (stock O2 reads 13.2-13.5 WOT AFR), while a 25% ethanol fuel may perform better a a 0.86-0.88λ (stock O2 reads 12.7-12.9 AFR) A E85 or E100 mixture may be targetting even richer, so knowing the fuel type is important.
  • If you have a custom map you are currently running please provide datalogs for that map as well as the map itself as we will use this as a starting point, even if it requires significant revision. However, if you have no base map or datalogs it is not an issue and we will provide you with the one to test as a base map and start datalogging at that point.
    Drop files here or
    Accepted file types: fpdl, fpcal, kdl, kal, kcl, kdlg, s3d, s3m.
  • The difference is instead of starting from scratch we may use your existing map as a starting point, or we may start from fresh but simply retain Wide Open throttle ignition or similar settings etc and transfer into a better tuned starting point for your modifications if something looks very amiss (part throttle fueling, cam angle indexing etc) in the dyno-tuned map.

COBB users, please ensure all datalogs are logging at least the following 11 variables:

1) AFR – Air Fuel Ratio (or A/F Sens 1 Ratio)***
2) MAP – Mass Air Pressure (or Boost PSI / Man. ABS. Pressure)
3) MAF – Mass Air Flow (or MAF (g/s) or AFM)
4) RPM – Revs Per Minute ***
5) IPW – Injector Pulse Width (or Inj. PW with Lat)
6) TP – Throttle Position
7) MPH – Speed (or Vehicle Speed)
8) STFT – Short Term Fuel Trim (or A/F Correction 1)***
9) LTFT – Long Term Fuel Trim (or A/F Learning 1)***
10) IGN – Ignition Timing Advance (or Ignition Timing in Deg)
11) CA – Cam Angle for the Intake Cam Advance (or AVCS in/out *both)
12) Knock – Knock sensor feedback (or Fine Knock Learn / or Knock Volume)
13)  Load – Vehicle load as a %. (or Calculated Load) ***
14) DAM – D.A.M multiplier for Subaru *If applicable / model year dependent.
*** = Tune Critical, can’t tune without. We also need your Cobb AP Serial number, very important as ATR Pro requires this information.

Please remember during all tuning to use the same fuel type and ethanol content as this affects AFR and STFT. Also if using a manual fuel pressure regulator or manual boost controller, please set the levels up ahead of time where possible and keep them the same until tuned. Also due to the returnless fuel system on many newer vehicles please try to keep the fuel level above half a tank during tuning, as some car tends to run sporadic fuel pressures (and air in the lines) when on the last few bars of fuel (this is why some SD/MAP tuned cars could report harder starting when near empty).
One last tip, be sure to allow the car to warm up fully before making any datalogs for submission, at least 10 minutes.. Typically we request a 30 min driving datalog and 1 to 2 WOT 3rd gear datalogs for each revision. These can be combined into one datalog or separate. For part throttle tuning, as revisions continue we may request to increase the datalog length for near completed tunes. This is due to the law of averages as in order for higher accuracy and averaging then previous revisions we need more information.
Due to the typical size of log files over 30 minutes (300MB to 700MB+) we recommend using www.7-zip.org to to compress these over 90% rather then online datalog hosting. Although online hosting does work it could take more time to get a revision as only a few revisions can add up to gigabytes of information being downloaded simultaneously with other users, where as small compressed logs download in seconds.
If you have any questions or concerns or suggestions for improvement please let us know. We are here to support you before, during and most importantly, after your purchase.
Thank you for your business, we aim for your 100% satisfaction.

The E-tunez Tuning Team