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Does anyone know how to tune for this ? Im fully tuned for my sbd blue with aux fuel and happy with my tune but just want crackles and pops. Does anyone know what to change in the tune to achieve this. Im going to ask my tuner if he knows how or will even do it. Just want to be able to point him in the right direction if possible
 

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Does anyone know how to tune for this ? Im fully tuned for my sbd blue with aux fuel and happy with my tune but just want crackles and pops. Does anyone know what to change in the tune to achieve this. Im going to ask my tuner if he knows how or will even do it. Just want to be able to point him in the right direction if possible
The Stratified tune I bought was supposed to produce them, but it did not. My only advice would be not to buy it.

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Discussion Starter #3
I don't want to buy another tune. I want to see if people know how to tune for it so my tuner can include it into my tune
 

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Yes decel
 

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Stratified did this basically by adding a little extra fuel after you let off the gas so that when it ignites you get the crackles and pops. They have said that not only will you not get a lot of the extra sounds with the stock dp but if you don't have a catless dp it will eventually damage the cat.
 

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I don't know if what I'm about to say is true with the ST, because I'm a noob with this platform, but every LS vehicle I have had (about 10 of them) all sounded smooth until I opened the exhaust up. Long tubes with no cats in the mid and a open type muffler caused popping and cracking on decel. Anyone with a catless downpipe and relatively open exhaust have that experience? Maybe I'm off base a little.
 

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I don't know if what I'm about to say is true with the ST, because I'm a noob with this platform, but every LS vehicle I have had (about 10 of them) all sounded smooth until I opened the exhaust up. Long tubes with no cats in the mid and a open type muffler caused popping and cracking on decel. Anyone with a catless downpipe and relatively open exhaust have that experience? Maybe I'm off base a little.
Somewhat correct. Stratified's first version of the crackle and pop used extra fuel on decel but the most recent version is supposed to not add extra fuel upon deceleration; the second version is much more pronounced as I've had both since each was released. Prior to the tune provision I had catless dp, high flow resonator and strait piped all the way back and it didn't really create the popping effect until the tune was installed. I'm sure others have had different experiences where they feather the throttle in gear and it fills the exhaust with excess fuel and creates the pops and sometimes flames. Big turbos are a different story.


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Yes, the basic concept is to dump a little fuel in with 0 percent pedal input (during decel) so that it ignites in the exhaust system. Typically, you cut fuel in deceleration, known as DFSO (decel fuel shut off). The issue with doing this is you are burning extra gas (if that concerns you) and that you can eventually damage the cat. You are igniting the gas in the downpipe, which creates the pops and burbles. If you are running a catless dp, this will not be an issue.

You (the tuner) can calibrate how much fuel to dump in and for how long, which will change the sounds of the pops and the length of the pops. It is also possible to change the RPM at which this happens; i.e. only happens after 4000RPM or it happens from 6500-1500RPM, depending on what you like.

Hope that helps.
 
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Discussion Starter #10
Yes, the basic concept is to dump a little fuel in with 0 percent pedal input (during decel) so that it ignites in the exhaust system. Typically, you cut fuel in deceleration, known as DFSO (decel fuel shut off). The issue with doing this is you are burning extra gas (if that concerns you) and that you can eventually damage the cat. You are igniting the gas in the downpipe, which creates the pops and burbles. If you are running a catless dp, this will not be an issue.

You (the tuner) can calibrate how much fuel to dump in and for how long, which will change the sounds of the pops and the length of the pops. It is also possible to change the RPM at which this happens; i.e. only happens after 4000RPM or it happens from 6500-1500RPM, depending on what you like.

Hope that helps.
I'll see what he says hopefully he can throw it in that's the only thing I want and more power 405whp isn't enough lol
 

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It has a lot more to do with the valve/ignition timing than it does the decel fueling. Adding extra fuel on decel will get you the occasional pop, but if you want something significant, it's timing. If your tuner knows his way around this matter, great, but I would avoid becoming a science experiment, especially after spending all the money to get to where you are.
 
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