Hey guys! So Ive been wanting to ask you guys about this, sometimes I hear people say that blowing a bunch of black smoke because of a tuner is hard on the motor, some guy was telling me the extra fuel dumping in the cylinders washes the oil off the cylinder walls, also that the extra soot can cause problems, any truth to this???

 

Haven't heard that yet, but it's hard on the wallet. Maybe someone else will chime in.

 

IIRC a chip or tuner alone won't dump enough fuel to wash the cylinders. Some of the guys with bigger injectors will chime in with more info.

 

All it means is that you need more air. Diesels do not have a set air/fuel ratio. If it runs rich, it still runs just fine. EGT's will probably get up there in a hurry, but that's about it.

 

[quote=Pocket;6744002 If it runs rich, it still runs just fine. EGT's will probably get up there in a hurry, but that's about it.[/quote]
I was hoping this was the answer. I have thought about this was the answer.

 

I, from everything I have read on here believe that the DP tuner is the very best one to spend $$ on.
That said I see absolutely no reason to purposefully cause your engine to blow black smoke for any reason, (ever get stuck by an old city bus??) I think the "smoke" tune is absolutely stupid, and like others say it can cause higher egts to boot.
Back some 25-30 years ago before all the modern electronics and such were added to diesel trucks you routenely would see big trucks smoking black all the time, espessely when laboring to climb a hill, but now they don't smoke at all, I personally don't want MY truck to blow black smoke-ever!

 

There is an air fuel ratio where a diesel runs best, their stochiometric is 22:1 (ish) as opposed to a gasser at 14.2:1 (around there)

Yes, too much fuel will "wash down" the cylinders, lubricate the cylinder walls "too well" where the ring will not scrape it clean, and actually push raw/semi-combusted fuel right down into the oil pan. Imagine what that will do to bearings.. Thats one of the reasons why i havent even drove on the higher two chip settings on my truck, i want to get at least 1000 miles or so on it before i go doing that, because there is ALOT of smoke in those tunes. The way my truck is now, it won't even run without emitting some color of smoke, be it white, blue or black. All depends on throttle position

 

So does a DP-tune in like the 60, 80, or 100 horse tunes blow alot of black smoke? My junk superchips makes my truck blow some pretty good smoke, but I would rather have a good tune that didnt blow much smoke, and then maybe get a smoke-tune for when I want to blow some smoke.

 

The 60 just gives a puff, the 80E gives a slight haze when you get on it good. No clue on the 100 & 120 but the 140 will plain out black out the car beside you.

 

Here's my Bill Cohron chip in the 120 hp setting.

 

then run BIO.

 

I like how mine blows black on command...

 

Smok'n if you can !!!!!!!!!!

 

love my 140 tune!

 

No, none of you with stock, stage one, two or even hybrids have enough fuel to worry about wasing down the cylinders. Only really gotta worry about it if you have ever experienced snuffing out a large turbo due to having TOO MUCH Fuel where it doesnt burn in the cylinder, and quenches the burn..