Question on Hp tuners DFCO / CFCO 2016 camaro 2SS M6. Need more burble / pops on dece

Not getting much crackle/pop/burble on decel/shift on my 2016 FBO e85 M6. I know DFCO/CFCO are enabled from the factory, so i tried to disable fuel cut in HP Tuners VCM editor. I don't notice a difference, did i do this properly? (note i have the tune backed up, tested one change at a time. ) My car is Pray Performance tuned and absolutely rips, im just looking to tweak and get some hands on experience . not touching anything spark/fuel table related.
Also does anyone have a vcm scanner layout setup with all the preferred channels and inputs? Please link or post. Thanks!

For vcm editor pic : https://r.tapatalk.com/shareLink?url=https%3A%2F%2Fwww%2Ecamaro5%2Ecom%2F forums%2Fshowthread%2Ephp%3Ft%3D550064&share_tid=5 50064&share_fid=10351&share_type=t

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decel spark and valve timing

Reduce the timing in the Minimum Spark Base and Long Term to 5 degrees in the .04, .08 and .12 rows where you want the pops on decel. 5 degrees of timing will make the popping rather aggressive so you can increase the timing values from there to fine tune how much you want.

do you smooth that graph after you make those adjustments

No do not smooth. You should never reach .04, .08 or .12 rows accept on moderate to hard deceleration. Smoothing the .16 and higher rows into the .12 and lower rows will negatively affect drivability.

Did you ever get the results you wanted ? Can you PM me OP

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Originally Posted by Higgs Boson

decel spark and valve timing

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Where are these?

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Originally Posted by nicul15

Where are these?

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These aren't tables in HPTuners. He was referring to the Engine Operating logic.

technically, they are in the tables, they just don't look the same as they did with GenIV stuff.

Min Spark timing set to 5-10 or so in the decel rows in the RPMs you want it to pop.
and disable DFCO

if you still have a variable cam you can retard it in the decel rows.

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Originally Posted by Higgs Boson

technically, they are in the tables, they just don't look the same as they did with GenIV stuff.

Min Spark timing set to 5-10 or so in the decel rows in the RPMs you want it to pop.
and disable DFCO

if you still have a variable cam you can retard it in the decel rows.

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I left DFCO enabled and it crackles as it enters DFCO which is perfect. When the car is cold and DFCO is disabled it pops and bangs forever which is really annoying. I would think that disabling DFCO and making the car pop and bang real hard would heat up the cats and destroy them. Yes, I agree the tables are there sorta. I posted how to make the pops and bags show up, remember? lol

My cam retards 5 degrees and I have 5 degrees of timing in the min spark tables where I want the pops on decel. This will get you the crackles people are looking for.

yes you can set it up however you want to. not sure what cats are, never heard of em.

The Cam retard is what was missing. I had changed it to 0 in those areas a while back. Thanks guys

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Originally Posted by nicul15

The Cam retard is what was missing. I had changed it to 0 in those areas a while back. Thanks guys

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Datalog and look, some cars will still retard the cam on decel even if you have 0 in the low-mid-high tables.

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Originally Posted by TriPinTaZ

Datalog and look, some cars will still retard the cam on decel even if you have 0 in the low-mid-high tables.

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Are you reffering to these tables? And make them A negatvie value in the decel areas?

Attachment 88765

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Originally Posted by J_menis

Are you reffering to these tables? And make them A negatvie value in the decel areas?

Attachment 88765

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no, I've said which tables in my first post in this thread.

yeah im running -3 in 1000rpm 0 1200 and 5 in the next one with 5* in the cam timing and its back.

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Originally Posted by nicul15

yeah im running -3 in 1000rpm 0 1200 and 5 in the next one with 5* in the cam timing and its back.

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Can you screenshot what you?re talking about lol. I have the pops I want but I?m looking to see what else I can play with.

Attachment 93209

is this the table you guys are talking about?

Engine>Spark>Minimum Spark> Base and Long Term (Both tables)

Change 0.04 to 0.12 airmass rows by 1400 to 2800 columns to 5.00.

Completely disable DFCO and test. Go higher or lower in the RPM to suit your needs.

Go higher with the number to make less aggressive pops.

Don't go over 0.12 airmass rows.

Let us know if it works out.

Attachment 93263

so i dont have a Minimum spark table. Am i changing the High octane and Low octane tables instead?

Vlad95, you are in Basic view. Change to the Advance view by going to 'Edit->View-Advanced'.

Thank you very much. I was able to adjust the table and it definitely pops now. I have one question tho, right now it only pop once u get off throttle. Is there anything that could be adjusted that would allow it to pop just on decel like the 19s do. For example if you were to downshift.

My 17 used to pop and bang real hard on downshifts without adjusting for it. Technically the same thing should work in the areas of downshifting but I haven't tested if it affects drive-ability. You will need to datalog the car when going through the downshifts and see what torque mangement advance is doing and reference against the cells in the areas of the same tables you adjusted. Also, if when you're downshifting the RPM's exceed the areas in the minimum spark table that you've adjusted, you will need to lower them for the higher RPM ranges too.

I put my entire .12 and lower to 5 degrees once and the car sounded like a machine gun on decel and downshift at any RPM. It was so obnoxious I had to pull over and adjust the tune.

That?ll get you some attention. 😂

Is there anything like the GenIVs DFCO Delay to define a certain time when all DFCO conditions are met, before it will shut off the fuel?

Hi together! Im a totaly newby in using HPTuners and I hope you can help me to change my DFCO settings.
I changed the Base and Long Term tabels in the minimum Spark Tab and now I dont know whats a good way to disable DFCO (disable over high ECT maybe, but I dont know if this is a good way).

I have a 2017 Camaro V8 SS 1LT 6MT and want more or minimal the same pops and crackels on decel like when the engine is cold.
Additionally I'd like to have some stronger pops and crackels only when I am in Trackmode, pushing a button / go into the Competition Mode. Is this possible?

Thanks in advance for your help!

Attachment 93846

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Originally Posted by TheRedFox

Hi together! Im a totaly newby in using HPTuners and I hope you can help me to change my DFCO settings.
I changed the Base and Long Term tabels in the minimum Spark Tab and now I dont know whats a good way to disable DFCO (disable over high ECT maybe, but I dont know if this is a good way).

I have a 2017 Camaro V8 SS 1LT 6MT and want more or minimal the same pops and crackels on decel like when the engine is cold.
Additionally I'd like to have some stronger pops and crackels only when I am in Trackmode, pushing a button / go into the Competition Mode. Is this possible?

Thanks in advance for your help!

Attachment 93846

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You need to leave DFCO enabled and at stock values. Also, you cant have factory cats on the car and expect much in the way of pops and crackles. #1) 4 cats will negate much of it. #2) The ceramic based cats cant take the abuse for too long and may fail/shatter etc. IF you want pops and bangs you need to lower the min value to 5 degrees every RPM you want them and then you can blend the values to increase as you dont need 5 degrees at high rpms for pops. I used to have mine scaled from 5 degrees at 1200 RPM to 12 degrees at 5000 RPM. But I also didn't have factory cats. That would have destroyed them.

Thank you very much!

I dont have a long term table, only a base table. I also have a 2010 Camaro which is a different generation. Is this why?

Select "Advanced View" in your editor and you'll see all tables

For what its worth, GM has changed the Minimum Spark values for the 2019 model Z06 for more pops from factory. If anyone wants more burbles this is an easy copy paste. Obviously if you want more than this you can lower your minimum spark to 0 degrees and disable DFCO. That is where it gets really rowdy.

Attachment 96526

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Originally Posted by TriPinTaZ

For what its worth, GM has changed the Minimum Spark values for the 2019 model Z06 for more pops from factory.....

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I mean.... is that REALLY WHY?

But can I use this on my 2017 SS 1LE ?

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Originally Posted by Frost

I mean.... is that REALLY WHY?

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Tadge himself didn't tell me so I guess it could not be the reason at all. But looking at the tunes from the 2019+ vs the older ones, there is almost no other changes. At least none that would affect engine operation. The purpose of the minimum spark from what I can tell in my experience is that it sets the floor for Torque Management Advance to use spark to reduce delivered torque. By lowering this table it allows TMA to pull values down into the range that start causing pop and burbles. If you're disputing my theory perhaps you could offer alternate views?

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Originally Posted by TheRedFox

But can I use this on my 2017 SS 1LE ?

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Yes you should be able to without incident. If you find the car displays any drive-ability issues then I would just keep the stock values at the .20 and higher airmass and maybe blend them into the .16 and lower. .12 and lower are the hard decel areas and it blends into the .16 row at times so you might have to play with it.

For what it's worth my .08-.16 rows are lower than this table in Minimum Base Spark but are exactly whats shows in the image for Long Term Minimum. I do it this way since I still have DFCO enabled. If you disable DFCO you can just make both tables the same. I get a good amount of nice pops and burbles before and during DFCO entry and then they stop when fuel is cut and the spark references the Long Term Minimum table. Perfect for how I want my Z06 to sound.

great info in this thread, thanks

I get to many guys wanting me to do this to their car, and I just cant bring myself to do it lol

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Originally Posted by Phil'sC5Vette

I get to many guys wanting me to do this to their car, and I just cant bring myself to do it lol

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I put the 2020 LT1 Camaro tables into my 18 2SS 1LE and when dfco is disabled, its just obnoxious and I feel like my cats are getting destroyed. Put those back to stock like a week later lol

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Originally Posted by shaneb

i put the 2020 lt1 camaro tables into my 18 2ss 1le and when dfco is disabled, its just obnoxious and i feel like my cats are getting destroyed. Put those back to stock like a week later lol

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this.

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Originally Posted by Phil'sC5Vette

I get to many guys wanting me to do this to their car, and I just cant bring myself to do it lol

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If you leave DFCO enabled in the tune it will only pop on transition into fuel cut. With the stock manifolds and exhaust it sounds good. If you add headers and a Catback I can see how it would be too much.

What is the reason for DFCO? Fuel mileage?

I tried what you posted TriPinTaZ on my L86 with headers and no cats and DFCO enabled. But I didn't really here any difference. I'm going to take 5 more out of if and see what it sounds like. I would like to just get a-little gargle and pop.-