Before I start describing the process I went through, I want to first describe the full feature set of the StreetTuner package as well as the accessories that make tuning with it a little easier.

The StreetTuner package has access to all of the important tables that you would need to tune and access to some tables you will likely never touch.  The AccessECU development team has been pretty good about adding features that their users request, such as small changes in the interface to make it easier to use, or more features to make it more capable.  The current list of accessible tables in StreetTuner includes:

• AVCS Intake Cam Advance (degrees, 14 load x 18 rpm)
• Boost Limiter (PSI, 6 barometric pressure levels)
• Boost Targets (PSI, 8 throttle position x 12 rpm)
• Turbo Dynamics, Coarse Gain High (%, 9 boost error levels)
• Turbo Dynamics, Coarse Gain Low (%, 9 boost error levels)
• Turbo Dynamics, Fine Gain (%, 9 boost error levels)
• Wastegate Duty Cycle Air Temp. Compensation A (%, 16 temp levels)
• Wastegate Duty Cycle Air Temp. Compensation B (%, 16 temp levels)
• Wastegate Duty Cycle Barometric Compensation (%, 6 load x 4 rpm)
• Wastegate Duty Cycles High (%, 8 load x 8 rpm)
• Wastegate Duty Cycles Low (%, 8 load x 12 rpm)
• Closed Loop Delays (ms, 3 values)
• Closed Loop Modified Load (16 rpm ranges)
• Closed Loop TPS (TPS, 16 rpm ranges)
• Closed Loop Vehicle Speed (speed on, speed off)
• Fuel Injector Latency (ms, 5 battery voltage ranges)
• Fuel Injector Scale (scalar, single value)
• Intake Calibration (g/s, 54 MAF voltage values)
• Primary Fuel (AFR, 15 load x 18 rpm)
• Tip-In Enrichment (fuel correction, 18 values)
• Dynamic Advance A (degrees, 16 load x 18 rpm)
• Dynamic Advance B (degrees, 16 load x 18 rpm)
• Dynamic Advance C (degrees, 16 load x 18 rpm)
• Dynamic Advance Multiplier (initial value)
• Knock Learning (degrees, 4 load x 6 rpm, populated by ECM only)
• Primary Ignition (degrees, 15 load x 18 rpm)
• Rev Limits (RPM Cut, RPM Restore)
• Full access to enable/disable displaying/reporting of OBDII trouble codes

In addition to this very long list of tables, StreetTuner also comes with a handy “Help Active” function which displays the help file information for whichever parameter you are currently viewing.  This is useful when you are looking at something and you need a quick reminder about what it does.

I mentioned earlier that StreetTuner has the ability to log data.  This feature is able to poll any information that is available on the OBD2 port.  This includes all the typical things that you’d want to log during tuning, including Ignition Timing, Injector Duty Cycle, RPM, Wastegate Duty Cycle, Dynamic Advance, Boost, MAF airflow, and so on.  However, this function is enhanced further with the ability to log data from external devices, namely a third-party Wideband O2 sensor.  Anybody reading this article probably already knows that you can’t use the stock oxygen sensor for fine tuning your engine because it lacks accuracy.  In this case, an auxiliary Wideband O2 sensor is vital.  I chose to use the Innovate Motorsports LC-1 kit, which was relatively easy to install in my exhaust, which already had an extra bung in the downpipe to screw the sensor into.  The rest of the unit is easily installed as well with just a couple wires for power and ground, and then a pigtail hanging out somewhere accessible to plug into your laptop.  This kit is available for a very reasonable price from innovatemotorsports.com.  This happens to be one of the Cobb-supported Wideband kits so integration with StreetTuner is seamless.



In addition to the basic StreetTuner kit and a wideband O2 sensor, you will need a good boost pressure gauge and possibly an oil temperature gauge so you can be sure not to give the car any hard pulls until the oil is fully up to temperature.