General Tuning Guide Lines for Turbo Applications.

[TheBoz2]

*** NEVER EVER TUNE YOUR CAR ON PUBLIC STREETS, TAKE IT TO A DYNO OR A TEST AND TUNE DAY AT A TRACK ***
*** NEVER EVER TUNE YOUR CAR ON PUBLIC STREETS, TAKE IT TO A DYNO OR A TEST AND TUNE DAY AT A TRACK ***
*** NEVER EVER TUNE YOUR CAR ON PUBLIC STREETS, TAKE IT TO A DYNO OR A TEST AND TUNE DAY AT A TRACK ***


*** MAKE SURE ALL SENSORS, BASE TIMING YOU HAVE CONFIGURED EVERYTHING CORECTLY FIRST BEFORE ANY TUNING ***
*** MAKE SURE ALL SENSORS, BASE TIMING YOU HAVE CONFIGURED EVERYTHING CORECTLY FIRST BEFORE ANY TUNING ***
*** MAKE SURE ALL SENSORS, BASE TIMING YOU HAVE CONFIGURED EVERYTHING CORECTLY FIRST BEFORE ANY TUNING ***

How to Setup Base Timing
http://videos.streetfire.net/video/AEM-EMS-Set-Base-Ignition_727975.htm



The Car: 1991 Mitsubishi Galant VR4, this is the same as a 1st gen DSM.

This is specific to Turbo Applications and Built Motors.

I am only posting this up because I have not been able to find anything online.  So I am posting what I am using as my guidelines.  Please fill in more info, because I do not have all the tuning knowlege .

California has a Summer and a Winter blend of gas, I dont know what the difference is but once I find out I will post up the info.  So remember that the gas can and will change.  You need to check your logs every once and a while to make sure that your car is still running the way you expected it to.

Pump Gas (91oct Cali)
AFR: 10.8-11.2 (10.8 is safe)
Timing: 10 degrees at peek torque, 15 degrees at Redline
Very Hot Temps Timing: 0-2 degrees at peek torque, 8-10 degrees at Redline(120+ degree intake temps)
Boost: 25-28psi
Knock: Less than 2.5 volts

Q16 or C16
*** Q16 requires 4-6% more fuel over your C16 tune  ***
Q16 or C16 - Low Boost
AFR: 12.5
Timing: 22-25 degrees
Boost: 30psi or less
Knock: Less than 3.0 volts

Q16 or C16 - Medium Boost
AFR: 12.0-12.5
Timing: 18-22 degrees
Boost: 30-35psi
Knock: Less than 2.6 volts

Q16 or C16 - High Boost
AFR: 12.5(30psi)-11.5(45psi)
Timing: 12-18 degrees
Boost: 30-45psi
Knock: Less than 2.3 volts

*** The reason for less volts on knock with more boost is, when knock happens at 45psi, stuff breaks quicker, so put in some extra buffer.  You can remove all of that buffer but these are the guidelines that I am using.


After Peek torque you should increase timming a few degrees by redline, be very careful when doing this.  Keep a close eye on that knock.


Knock Control
Setup -> Sensors -> Knock Sensor -> Knock Control

Options - Knock Control
Knock control: Checked


Knock Sensor Cal table
0.91796875   1.19140625   1.4453125   1.71875   1.97265625   2.24609375   2.5   2.5   2.5   2.5   2.5   2.5   2.5   2.5   2.5   2.5   2.5


Options - Ign Control
Knock Ign Rtd Max: 4.92  Degree
Knock Retard/Volt: 3.28  Degree/V
Knock Restore Rate: 50  rev
Knock Spark Advance: 2.46 Degree

Options - Fuel Control
Knock Fuel Add Max: 5.08  %
Knock %Rich/Volt : 5.00  %/V
Knock Restore Rate: 50  rev
Knock Decrease Fuel: 2.34  %


*** Should have O2 Feed Back enabled ***
Freeway MPG(any gas)
AFR: 14.7-16.5
Timing: 30-35 degrees
Boost: 0-To as much vac as your car has
Knock: Should be like 0-0.02 volts



Make sure you have AEM Pro closed before doing this.
I have attached my templates file so that you can just unzip my templates and use them on AEM Pro.  To do this you will need to first make a backup of your templates DIR(C:\Program Files\AEM\AEMPro\Templates), just take everything in that folder and highlight all of it.  Then Right click and Select SEND TO, and Compressed ZIP.  This will create a backup just incase.  Then you simply unzip the the files from the Templates.zip attached to this thread, and place the file in (C:\Program Files\AEM\AEMPro\Templates).  It will ask you if you would like to overwite the existing file, just say YES.

What to Log:
Engine Speed
Engine Load
Throttle
Air Temp
Coolant Temp
Injector Duty
O2
O2 FB Value
Fuel Trim IAT
Ign Timing
Ign Trim Air Temp
Knock #x Raw
Knock #x Volts
Knock #x Fuel
Knock #x Volts






*** BEFORE YOU START TUNING YOUR CAR DO THIS ***
*** BEFORE YOU START TUNING YOUR CAR DO THIS ***
*** BEFORE YOU START TUNING YOUR CAR DO THIS ***
1. Check your Oil.
2. Verify you have Oil .
3. Check Coolent Level and Overflow
4. Make sure that all sensors are configured properly in the EMS
5. Make sure all your lug nuts are tight, I know it sounds funny but after a night of working on your car it is easy to forget.
6. Make a test run not in boost to make sure that everything sounds fine, come back and do a once over again.



Basic Tuning for AFR:
*** Always start out rich, you can always take fuel out. ***
*** If you dont know how much fuel to run, put more in. ***
1. Set Boost Pressure at its Lowest possible setting.
2. Verify that everyting looks good and engine is running properly
3. Hit F6 to start logging
4. Do a third gear pull, watching your AFR, if it goes lean let off the gas.
    a. Car went lean, add more fuel
    b. re-run the 3gear pull with more fuel
5. Pull over
6. Open the log file
7. Look at your AFR and ADD or REMOVE
8. Check the KNOCK if it was making noise and your AFR's were within limit, pull timing.
    a. Remove 1-2 degrees of timing before and where the knock
9. Repeat until you are happy with the results.
10. Turn the boost up and repeat steps 2-9




Basic Tuning for Timing
***  START WITH LOWER TIMING, you can always add more ***
1. Set Boost Pressure at its Lowest possible setting.
2. Verify that everyting looks good and engine is running properly
3. Hit F6 to start logging
4. Do a third gear pull
5. Pull over
6. Open the log file
7. Look at your KNOCK and ADD or REMOVE timing
9. Repeat until you are happy with the results.
10. Turn the boost up and repeat steps 2-9





Also dont forget to do a 0psi, and a super low boost tune.  This way you can guestimate the stuff inbetween.  To do 0psi, just get on the freeway, and hold the car in 3rd gear and stay a 0psi while logging.  You dont have to go all teh way to redline, just about 6k or so.  I also ran a 5psi run the same way to get it dialed in, because whenyou are going uphill you will more than likley be at 1-2 psi even on a big turbo.


I hope this helps, if anyone has any comments or thinks I should adjust this, just let me know.  I am just trying to provide some helpful info for all the street tuners out there.




**** READ ALL THESE ALSO, VERY GOOD STUFF HERE ****

Really good Forum threads about tuning and cold start.

1. Dyno Maths Lib, Use this for street tuning, it will help you to see what power you are making
http://forum.aempower.com/forum/index.php/topic,2279.0.html

2. Boost Comp Thread
http://forum.aempower.com/forum/index.php/topic,11494.0.html

3. Supra Forums Tuning Info Thread.  This is a really good read, boost comp and general understanding of stuff/drivability.
http://www.supraforums.com/forum/showthread.php?t=520811

3.1 Supra Forums Idle Info.  Great post on how to get your car to idle.
http://www.supraforums.com/forum/showpost.php?p=6454700&postcount=23

4. Evo E85 Cold Start / General Startup thread, this one is bad ass and a wonderful thread.
http://forums.evolutionm.net/aem-ems/390508-cold-start-e85-calibration.html

5. Lean Protection
http://forum.aempower.com/forum/index.php/topic,26003.0.html

6. Rev Limiter, 2step, and NLTS
http://forum.aempower.com/forum/index.php/topic,26059.0.html

7. Fan Control
http://forum.aempower.com/forum/index.php/topic,25999.0.html

8. Meth + NOS Map + HI/LO Boost + Protection with one switch
http://forum.aempower.com/forum/index.php/topic,26002.0.html

9. EMS Boost Control
http://Eclipse.ErichMoraga.com/AEM/Idiots_guide_to_AEM_boost_control.doc

[TheBoz2]

Link to boost comp maps:
http://forum.aempower.com/forum/index.php/topic,26131.0.html




I have added a CA 91 Pump Gas 17psi Log File and a Q16 27psi Log file.

Look at the log files, and you can get a better idea of how you will need to tune your car.  I am still in the process of tuning the car on both of these maps so they both need work.  Some will need fuel, some will need it removed and both of them need more timing.

1. Open the STF file.
2. Graph Setup
    a. Number of Plots(3)
        Plot 1: Engine Speed
        Plot 2: Engine Load
        Plot 3: Ign Timing
    b. Click Overlays
        1. Engine Speed Overlays
             - Air Temp
             - Throttle
        2. Engine Load Overlays
             - O2
             - O2 FB Value
        3. Ign Timing
             - Knock #1 Fuel
             - Knock #1 Raw
             - Knock #1 Retard
             - Knock #1 Volts
     c. Click Ok
     d. Click Draw


Now you have a log file loaded an you can start to analyze it.  First thing first, find the 3rd gear pull and zoom up on it.  Look through the run and figure out what your afr is and return to your map and add or remove fuel according to what you see.

For the Knock, I use both Knock #1 Raw and Knock #1 Volts to see what is going on.  Yes they are different.  So using the guidelines from the previous post you can take take and figure out where to add fuel and remove fuel and add and removing timing.

Eample:
Fuel -- 5100rpm-7500rpm I need to remove fuel(Even more from 5700rpm-6300rpm)
Timing -- 4500rpm-7200rpm add 1 degree, 7200rpm-7500rpm smoot out the transition and add a little more timing

So that is it.

Let me know if you have any questions.

[missouri_dsm]

This is one of the best/most informative thread on tuning I have ever seen on this board or any other forum for that matter. Props to the OP. We need more threads like this. Can a mod or someone make this a sticky on the front page?

[TheBoz2]

Added my Template Files.

[jonbar87]

Very informative thread. Thanks.