I have a 2006 duramax and i have plenty of additions to it like a 5" MBRP exhaust and a AFE Stage 3 Intake also i have EFILive And a FASS Fuel/Air seperation system. I am using AMSoil synthetic and other clean products but im just not gettin the SMOKE expected. Does anyone have a EFILive code that smokes alot and there happy with, or any ideas on what i can do to make that DMAX SMOKE>??:D:

EFI Live will give you plenty of smoke, but you will be running on borrowed time on a stock tranny.

I suggest that you post this over on the Custom Tuning Software section, as your question relates to a custom EFI Live tune. A search will show you similar topics.

go to the tune libary, there is a smoke tune in there. if you want some smoke there it is!!!

ok thanks guys

Try The Joe Farmer Smoke Tune In The Tunning Libary.

Not to jack this thread,...... but I've been lookin at that tune,..... and WOW!

3000, and up to 4000 ms of pulse!:eek: is that what it takes to make smoke???

A few questions,..... 1, is it because the the length of the pulse is soooo long, it is still injecting a ways past TDC, and cant possibly burn the fuel, so it rolls out as smoke? 2,.... if one were to advance the timing far enough to burn a 4000ms pulse,... wouldn't it make a terrific amount of power?

Forgive me if these are newb queerys, I haven't researched enough of the "Big" tunes to see what kind of pulse widths that are being applied to those.

Next question,..... wouldn't it be possible to create quite a bit of smoke, by simply retarding the injection event (within reason), without going to extremes with the pulse width, and making tons of power?

Just thinking to myself......:rolleyes::D

single stock cp3 wont keep up with much over 3100-3300ms pulse

4000 will equal out to low rail pressure

Not to jack this thread,...... but I've been lookin at that tune,..... and WOW!

3000, and up to 4000 ms of pulse!:eek: is that what it takes to make smoke???

A few questions,..... 1, is it because the the length of the pulse is soooo long, it is still injecting a ways past TDC, and cant possibly burn the fuel, so it rolls out as smoke?
Not exactly. The smoke occurs because the engine is running "rich". IE there is too much fuel for the ammount of air being supplied.
2,.... if one were to advance the timing far enough to burn a 4000ms pulse,... wouldn't it make a terrific amount of power?
No. At that long of a pulse width the injection would have to start so early that you would be running the ragged edge of destroying the engine. If you need that much fuel bigger injector nozzles are required.

Forgive me if these are newb queerys, I haven't researched enough of the "Big" tunes to see what kind of pulse widths that are being applied to those.

Next question,..... wouldn't it be possible to create quite a bit of smoke, by simply retarding the injection event (within reason), without going to extremes with the pulse width, and making tons of power?
Kind of...but the question is: why? Most times the smoke you see is a by-product of big power. Large turbos are hard to spool, and the fueling is set up for the boost that the turbo produces once its wound up. So when the throttle hits the floor and the turbo isn't out of bed yet the result is alot of unburned diesel. besides, big smoke without big power is reserved for the cummins guys...:p:

Just thinking to myself......:rolleyes::D


Hope this helps

Hope this helps

Yes,.... to a point. I understand the rich mixture making smoke, I also understand that, to put it simply, there are only a few things that determine the burning efficiency of the charge.
1, Amount of fuel, which is governed by the rail psi vs. P.W. time,
2 Amount or air, governed by the turbo psi
3 timing of injection event.

Now,..... keeping in mind that most of the discussion here is geared towards increasing the efficiency, to gain power and or mileage, there is also interest in decreasing efficiency to produce copious amount of black smoke.

I really dont want to get into the moral issues of making smoke, just the mechanics of it.

In order to decrease efficiency to the point of making smoke, realistically, one should be able to vary one or more of the parameters mentioned above. Either, one,..... dump large amounts of fuel, 2 reduce the air supplied, or 3, retard timing.

In the VVT motors, is it possible to vary the boost tables to reduce the air supplied? This should enable the engine to produce more smoke, at less power, than the non-vvt motors?

Otherwise, it's lots of fuel, with retarded timing. Thats my take on it.

My intent here, is a reduced power smoke tune, engineered specifically for the fartcan honda kids, and Prius owners, without breaking the warp speed laws. Law officials here, while not liking smoke, willl surely be less impressed than lots of smoke produced with tire smoke and excessive speed. In a nutshell,.... that's the Why.:rolleyes:

You have the basic Idea and understanding. You just need to consiter the included possibilities. a longer injection P/W Included with retarded timing can quite easily result in fuel still burning on its way out the cylinder. and some other nasty side effects. You can quite easily produce copious ammounts of smoke with a 2000-2300 uS pulse width, stock timing table "C" and the maf tables set to "120". All while being fairly easy on the trans. heck, if all you do is set the maf tables to 120, an otherwise stock tune will smoke a fair bit when nailed from a stop.

Regarding that smoke tune, I would be careful running it. I did and it cost me a turbo. Well, I cost me a turbo with the help of that tune that is...

Sky high EGT's would be my guess, as far as turbo problems go, perhaps an overspeed. :D

Thanks for the pointers, now if I can trouble you a bit more. The MAF table you are referring to is (B0802)? and thats 120 in gms/sec? What exactly is this table doing anyhow? Does it modify the P/W to attempt to maintain a specific A/F ratio? I have yet to figure what the MAF system does on a diesel. I completely understand what it does on a gasser.

How about the "desired boost" (B0504) table for a LB7? I realize that it wont raise the boost level beyond what the fueling will allow, but will this table lower the boost, by having the ecm open the wastegate? Perhaps thats my ticket to "Low Boost fueling" :rolleyes:

the wastegate is mechanically operated, the ecm has nothing to do with it.

the wastegate is mechanically operated, the ecm has nothing to do with it.

Thats what I thought,.... then what do the boost tables do on the lb7? nothing?

The boost tables on an LB7, as far as I know, only give reference to when the ECM sets an overboost DTC.

As far as the MAF tables, there are two of them. B0802 is one of them, I believe the other is B0801 or B0803. one is EGR on the other is EGR off. You want to set these to 120 mm3 across the board. This efectively thwarts the ECM's efforts to reduce smoke at low boost numbers. There is one other fuel limiting table, I forget the exact number, I believe its called "Max Fuel Quantity" you can bump this table up if you need to, but it can bring a whole host of other problems with its adjustment.

Gotcha!,........ I'll take a look when I get time, and see if those are limiting me.

Thanks! :D