Injector, leaking cooler???

[Fosterslaw77]

Ok I have a 4 inch turbo back. I had my ficm fixed along with atlas 40 tune. Well I noticed when taking off sometimes a puff of bluish blackish smoke which I was told is normal. But it seems to be getting worse. Sitting at a light the other night I looked in mirror and saw smoke I think blue coming out of pipe. Take off it clears up. Sometimes it will blow bluish smoke a lot sometimes never. When it was smoking the other night I pulled into where I was going and no smoke. Could I have an injector on its way out. Or is egr valve sticking open, or cooler leaking. I have read here that coolant and soot can make bluish smoke. Also I have not seen any coolant loss. I have ordered and egr delete. Also I checked oil change in 1500 miles ago and still on same spot on stick. At idle i occasionally get a small surge like 50rpms, but its very random, did it two days ago and nothing since. Thoughts anyone.

[onealmx11]

I could be wrong, but I think excess fuel causes blue smoke. How long ago did you have ficm repaired? Have you tried any fuel treatments yet?

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[Fosterslaw77]

Fixed two months ago all numbers are fine with it. I did add atlas 40 which prob adds some fuel. So maybe I have an injector crapping slowly. Yes rev x fuel and diesl power nothing different. Great milage and smooth running as well.

[onealmx11]

Have you put a code reader on it yet to see if its thrown any dtc's

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[sinner6.0L]

could be a turbo leaking oil into the exhaust

[Fosterslaw77]

Have cts shows nothing gonna have to bring to the shop. Today it was smokey most of day. 1 hr in bjs smoke is minimal when we drive home. So weird.