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Old 02-03-2020, 01:29 PM   #1
CamaroChriSS
 
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"Tune" at 16 SS Exhaust like the 19s?

I know the 19s exhaust was tuned for more crackles and pops, but is that mechanical or computer tuning? Is there a way to convert the 16 to be more bubbly like the 19s?

Thanks!
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Old 02-03-2020, 01:38 PM   #2
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Here's that thread: https://www.camaro6.com/forums/showthread.php?t=563618
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Old 02-03-2020, 01:48 PM   #3
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Thank you!!
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Old 02-03-2020, 06:50 PM   #4
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Once you figure it out, could you send me a map maybe? It's too complicated for me otherwise and my tuner refused to do it.
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Old 02-04-2020, 06:42 AM   #5
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Once you figure it out, could you send me a map maybe? It's too complicated for me otherwise and my tuner refused to do it.
Sorry that your tuner doesn't want you to be 100% happy with your car. People have strong opinions about the decel pops for some reason. It's your car, you should be able to do with it as you please.

1. Open your file in hptuners. Best practice is to read it from the car, but if you know for sure you have the latest, it's not the end of the world to use it.

2. Click the "Engine" icon.

3. Click the "Spark" tab.

4. Click the "Advance" sub tab.

5. There are 3 columns of stuff. In the third column, look for the heading "Minimum Spark". You will see buttons for "Base" and "Long Term". These are what you change. When you click them a big table opens up. Don't do that yet, thought.

6. Click "Compare" in the menu bar.

7. Click "Open Compare File".

8. Navigate to the file referenced in the above thread and open it.

9. In compare mode you can easily look across 2 tunes and see what is different. You can also easily copy and paste one to another. The table icons in the top ribbon allow you to switch between the tune you are working on and the compare tune. The table icon with the blue flash is the tune you are working on. The table icon with the red flash is the compare tune. The table icon with both shows differences between the tunes. You can also click "Compare" and "View Comparison Log" to see a list of differences between the tunes. No need to do it now, it's just good to know for the future.

10. Click the table icon with the red flash to access the compare tune.

11. Open the 'Minimum Final Spark" "Base" table. You'll see a big colored table. The Green/Yellow/Orange cells are the cells that are the same between your tune and the compare tune. The Pink/Purple cells are different between the 2 tunes.

12. Highlight the entire table. You can do this by clicking the empty header cell where the header row and column meet. Copy (right click on mouse and copy or ctrl+C) the entire table.

13. Close that table.

14. Click the table icon with the blue flash to switch back to your tune.

15. Open the 'Minimum Final Spark" "Base" table.

16. Highlight the entire table. You can do this by clicking the empty header cell where the header row and column meet. Paste (right click on mouse and paste or ctrl+V) the entire table.

17. Repeat steps 10-16 for the "Minimum Final Spark" "Long Term" table.

18. You will notice both have turned red. This shows that you have changed this in the tune. As an added final check, you can click the table icon with both the red and blue flashes to access the differences between the two tunes. When you open the Base and Long Term spark tables it should be full of zeros (indicating no differences).

19. Click "Compare" in the menu bar.

20. Click "Close Compare File"

21. Click "File", "Save as" and save your file as something new. As an option, prior to saving, you can click "Edit", "Calibration Details" and leave yourself a note in the "Notes" section of the "Calibration Details" tab to remind you of what you did in your tune. This is kind of a best practice, but it's up to you.

22. Put your car in service mode (without pushing the clutch or brake, press the start button for 10 seconds or so until the car electronics activate).

23. Turn your radio off, turn off Bluetooth on your phone, do not open the doors, operate the windows or push any buttons during the next steps. Make sure your laptop is plugged in (or at least has a full battery). Another best practice.

24. Connect your MPVI to your laptop and OBDII port on your car.

25. Click "Flash" then "Write Vehicle". Only write the ECM, no need to write the FSCM on this change.

26. Click "Write" and wait patiently until it is done. Do not silence or acknowledge the alerts that chime while writing it. They will stop on their own. The whole process takes 30 seconds or so (maybe less). Your car electronics will do some weird things and the infotainment display will kind of look broken. All normal.

27. When it says "Write Complete" and your car electronics displays have come back to normal, wait 20 seconds or so, then turn your car off by pushing the start button once.

28. Unplug your laptop and MPVI.

29. Start your car. For some reason, the first start after a flash doesn't work. Sounds like a dead battery. Just wait 2 seconds and try again.

30. Enjoy.

As an added bonus you can disable DFCO. You can do this by changing the Enable RPM and disable both to 8,000 rpms (see attachment). This will ensure your car never enters DFCO and keeps putting fuel into the cylinders while decelerating. It will pop like a race car. This does make driving a bit different because it doesn't slow down as much when you let off the gas. You will use the brakes a little more. It's a fairly subtle difference though. You may not have even notice it had I not told you.
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Old 02-04-2020, 08:18 AM   #6
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Quote:
Originally Posted by geaux_tigerss View Post
Sorry that your tuner doesn't want you to be 100% happy with your car. People have strong opinions about the decel pops for some reason. It's your car, you should be able to do with it as you please.
What an elaborate writeup, thank you very much geaux_tigerss
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Old 02-04-2020, 10:20 AM   #7
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What an elaborate writeup, thank you very much geaux_tigerss
Yeah, 5 stars for that explanation with photos!
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Old 02-04-2020, 11:13 AM   #8
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Incredible write up - thank you!
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Old 02-04-2020, 04:25 PM   #9
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Would these tables look the same for V6 models? Interesting in trying to mess around with the tables and try to get some pops on the V6.
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Old 02-04-2020, 05:01 PM   #10
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Well geaux_tigerss you write-up is well written.
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Originally Posted by arpad_m - “Aww, yet another oil thread with almost the same question in the OP“
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Old 02-04-2020, 05:55 PM   #11
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Wow, I dont think you could get anymore detailed, great write up man! I'll work on that later this week, one questions though. What happens if you just turn of DFCO, and leave the timing tables alone?
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Old 02-05-2020, 05:33 AM   #12
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Wow, I dont think you could get anymore detailed, great write up man! I'll work on that later this week, one questions though. What happens if you just turn of DFCO, and leave the timing tables alone?
Pops a ton more.

DFCO is a bigger impact than changing those timing tables to match the 19s. DFCO also makes it pop a lot longer. With DFCO enabled it really only pops at the beginning of your deceleration (first second or so after you let off the gas). With it disabled it will pop all of the way down to just about idle.

Need to get a go pro or something so I can show the difference I guess.
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Old 02-05-2020, 08:26 AM   #13
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Awesome write up. Wish my car was out of warranty so I could do this!
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Old 02-05-2020, 08:50 AM   #14
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Originally Posted by geaux_tigerss View Post
Sorry that your tuner doesn't want you to be 100% happy with your car. People have strong opinions about the decel pops for some reason. It's your car, you should be able to do with it as you please.
He's not wrong. I have a strong opinion about decel pops and if I were his tuner, I wouldn't do it for him but, I think this write-up is a good way to still assist. If it's not needed for the clean functionality of the car, I certainly wouldn't make any adjustments to it. Unless the car came from the factory with excessive popping from the exhaust, then I'd tune that out for myself, personally. But I wouldn't ask my tuner to do it.
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