I have installed a delete kit and a H&S chip on my 2009 F350 6.4 powerstroke , I installed the mild tune and run in street level. When I accelerate fast from 20 to 70 it puts out a little black smoke but as soon as I let off to maintain speed it starts blue smoke really thick and runs rough , it will eventually stop after 5 or so miles but if I accelerate it will puff blue each time for a bit longer. What could be the issue?

 

Model year, motor - could be helpful.

Also, what other after market is hanging on the motor?

Blue smoke is Oil or Diesel.

 

No other after market installed just the delete kit and Mini Max controller . I do have a cold air intake but have not installed yet.

 

On the Mini Max you can adjust how aggressive the fuel profile is, you might have a high pressure fuel situation that is now exasperated by the tuner.

 

Blue smoke would be oil. Maybe you have something going on in the heads like a seal going bad.

 

But it runs great under normal driving , oil level is fine, could it be something with defueling settings?

 

Not likely defueling to cause blue smoke, unless those settings are calming the turbo first. If the Blue smoke is diesel, then it is a situation of too much fuel as compared to the air at that moment.

Do you run fuel additives?

Any codes on the Mini Maxx or on a scan tool? Mini Maxx does not need to be plugged in so the ODB port can be used by a scan tool.

What are your EGTs when you see blue smoke?

 

Just a guess here......2009 6.4 liter...stock till just recently? Have you ever checked lower intercooler boot for oil build up? You're now producing more boost then ya would on a stock truck.....if there's oil build up in the intercooler and associated piping...under higher boost you may just be pushing that oil through the system into the turbos/intake and it's burning off.......

Now if there's a ton of oil in there....well then you could have a runaway motor and that is BAD.

 

Excellent recommendation.

 

As a matter of fact I just replaced that boot and there has been oil built up in there! When it got a hole in it it leaked out a pretty big spot of oil! What causes the oil build up?

 

Oil build up in the intercooler is normal...it's cause by the CCV( crankcase vent) being run back into the intake.......Some mod the CCV and vent it to atmosphere or run it through a filter that separates any oil vapor oil before it can get into the intake.

 

I think I'm going to install a Ccv catch filter , I had it over rev once it's not fun! Didn't know about what could happen when I installed the chip