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Motorsport Developments. Blackpools Leading Engine Tuner.

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Data-logging Using The COBB Accessport

When you purchase one of our COBB Accessports, you can enjoy it right out of the box, safe in the knowledge that all the original manufacturers safety parameters are still intact and the vehicle will perform faultlessly.

However, we do also offer an E-Tuning service that involves us inspecting your engines running parameters to ensure that you are getting the most from your tune.

This service requires us to get some data from your vehicle using the amazing data-logging capabilities of the COBB Accessport. This page will detail how to go about obtaining that data for us.

COBB Data Logging

The Best Parameters To Monitor?

Your engine management system constantly tunes itself to ensure that its Air-Fuel Ratio and its spark strategies are always safe. This is an ongoing process and the numbers generated day to day can be a little unusual to the untrained eye, with spark constantly being added and subtracted to keep the engine operating at optimal, safe parameters.

For us to be able to adjust the tune remotely, we need to access certain data streams from the ECU that will give us a solid understanding of how your ECU has adopted to the new tune and the fuel you are using it with, alongside the environmental conditions you operate the vehicle in.

To obtain that overall picture, we need you to log the following 22 parameters:

  • Actual AFR (AFR)
  • Accel. Pedal Pos. (%)
  • Boost Pressure (PSI)
  • Charge Air Temp
  • DTC Count (#)
  • Engine RPM
  • ETC Angle Actual (degrees)
  • Ign Corr. Cyl1 (0)
  • Ign Corr. Cyl3 (0)
  • Ign Timing Cyl3 (0)
  • Knock Count Cyl1 (#)
  • Knock Count Cyl2 (#)
  • Knock Count Cyl3 (#)
  • Knock Count Cyl4 (#)
  • Load Actual (%)
  • Load Des. TQ Ctl. (%)
  • LTFT (%)
  • Oct Adj Ratio Lrn (Mult)
  • TIP Actual ABS (PSI)
  • WGDC Actual (%)

How long to log for?

Although the Accessport will log many hours of data, that can be extremely time consuming to review, so ideally we only want full throttle data. A good full throttle pull will be something like 2500rpm - 6500rpm in 3rd and 4th gears.

PLEASE do not send us logs with hours of driving in as we will have to ask you to go and try doing another log.


How to perform the datalog...

Grab a brew and let the guys from COBB walk you through it...

What Next?
E-Mail the datalog over to us and we will review the data and get back to you as soon as possible.