10-14-2019, 07:05 AM | #1 | |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,678
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Exhaust Pops crackles 16-18
theres been a few ppl asking about how to increase them and we’ve been hearing that the 2019+cars definitely have more pops coming from the exhaust. this guy posted his stock 2019 file for us to look at and confirms this theory. There are a few tables that effect the decel pops but seems like the min spark tables are what gm changed from previous years. What I did was use the top three rows of both minimum spark tables and blend it in the next row or two. Gm has taken that table further than I have before and yeah it crackles a lot.
Quote:
Last edited by 6spdhyperblue; 11-29-2019 at 09:18 AM. |
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10-20-2019, 04:50 PM | #2 |
Drives: Chevrolet Camaro 2SS Join Date: Jul 2019
Location: FL
Posts: 139
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My car is a 2019 A10 SS , not 2020 fyi
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10-21-2019, 08:26 AM | #3 |
Drives: 2019 GMC Sierra 1500 AT4 Join Date: Nov 2011
Location: Orange, TX
Posts: 740
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That's is how I made mine pop more. Dropped the top 2 rows of minimum final spark to like 5. I wouldn't do any blending, though. It can lead to some weird driveability issues. You can also disable DFCO to get a bit more/longer pop.
If I remember right, I only did mine above 2k rpms so I could keep it from popping when I want to (I leave the neighborhood every day at 4:30 am for work).
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2019 GMC Sierra 1500 AT4
Summit White 6" Lift, 37x13.50R24's |
10-21-2019, 08:32 AM | #4 |
Drives: 6th gen Join Date: Aug 2013
Location: US
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Yeah people have been recommending around 5. Take a look at the file, it’s much more aggressive than that. People have said that may result in damaging the cats but I suppose not.
If you look at this file it is blended. If you’re not dropping the whole table and only the top rows you might want to blend a row or two as the 19+ file does. Last edited by 6spdhyperblue; 10-21-2019 at 08:51 AM. |
10-21-2019, 08:38 AM | #5 |
Drives: 6th gen Join Date: Aug 2013
Location: US
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10-22-2019, 11:13 AM | #6 | |
Drives: 2019 GMC Sierra 1500 AT4 Join Date: Nov 2011
Location: Orange, TX
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Quote:
Good info for the guys that kept them tho. Need to go find my hptuners pc so I can look at that file. Dang Imelda flooded me out so all that stuff is stashed away somewhere.
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2019 GMC Sierra 1500 AT4
Summit White 6" Lift, 37x13.50R24's |
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10-23-2019, 07:24 PM | #7 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,678
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Looks at the top three rows. This is where the decel happens
Ok 17 on top 19 on bottom Last edited by 6spdhyperblue; 10-24-2019 at 12:02 PM. |
10-24-2019, 11:35 AM | #8 |
Drives: 2017 Camaro 1SS M6 Join Date: Apr 2015
Location: Indy
Posts: 2,460
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That's interesting that the spark timing would have changed between 16 and 19.
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10-25-2019, 06:44 AM | #9 |
Drives: 2019 GMC Sierra 1500 AT4 Join Date: Nov 2011
Location: Orange, TX
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Wow, the whole table looks changed.
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2019 GMC Sierra 1500 AT4
Summit White 6" Lift, 37x13.50R24's |
12-08-2019, 12:03 PM | #10 |
Drives: 2019 zl1 6 speed Join Date: Jul 2017
Location: Lake Havasu Arizona
Posts: 979
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It's there an easy and safe way for newbies to do this through hp tuners? I just got my car tuned remotely and would like to try this out, but I dont want to mess up the tune that's in it. Mine doesnt pop at all, ever.
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12-08-2019, 12:53 PM | #11 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,678
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Download the file in the op. Copy the top three rows over from that tune into both minimum spark tables in your tune. Take a screen shot and post up what the top 6 rows look like.
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12-08-2019, 03:11 PM | #12 |
Drives: 2016 Camaro 2SS Join Date: Apr 2017
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Always make a backup copy of the current tune file. Then be sure to do a “save as” and then add the changes to the file name.
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12-08-2019, 04:41 PM | #13 |
Drives: 2019 zl1 6 speed Join Date: Jul 2017
Location: Lake Havasu Arizona
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Ok, I'll mess with that tomorrow after my dyno, I dont want to mess with it before that, thankyou for the info.
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12-09-2019, 06:13 AM | #14 |
Drives: 18 Camaro LS M6 Join Date: Apr 2019
Location: NH
Posts: 698
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had a bimmer glide up next to me last night with all snarling and popping an shit. looked like he was looking for a run. he jumped me first then i merged to his lane and punched. either i caught him by surprise or he lost heart but he was still pulling before I hit my exit.
all show- no go. |
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