Straight Piped....White Smoke.....Loud Pop

[Shalz92]

Straight Piped....White Smoke.....Loud Pop....sound familiar?

Let me explain my situation. I bought my 300ZX TT 1994 with only 80K miles on it about 2 weeks ago. Ive done maintenance on it and has been running like a dream (This is with the stock downpipes, stock cats and mufflers on). However, I bought SZ down pipes and a test pipe but i left the mufflers on. After installing the new pipes and instantly after turning my car on it started to spew out white smoke and lot more once i pushed on the accelerator....and sometimes when i rev it a bit hard it will backfire and make a loud pop sound, my car would never do this before when i has the stock down pipes and stock cats installed. This happened as soon as i installed the SZ down pipe and new test pipe. Also, the smoke is white like steam...and it does not smell like burning oil or coolant.

MODS DONE TO CAR:

5" High Flow Air Filter (Cone Style)
Speacilty Z Down Pipes
AMS Test Pipe 3" to 2.5"
Stillen Quad Tip Mufflers

My mechanic was saying it could be that the car is running lean because it as so much more air to fuel ratio than it did before and since i have a big air filter on the car. I will be getting my NISTUNE CHIP in on monday and we will try to tune the car properly so it wont run lean anymore.

Any kind of opinions and advice would be welcomed thank you!

[Shalz92]

I made a video so it could probably be easier to identify the issue.

First Video: The car is in cold start and just idling. 


https://youtu.be/FoDVr4PnDaI


Second Video: The car is in its normal temperature area with idle and then was also accelerated to show smoke.



https://youtu.be/onxP_IUZIMY

[sns00]

No codes? Did you tried a different air filter?
When was the last time you checked your vacuum hoses?

[Shalz92]

No codes? Did you tried a different air filter?
When was the last time you checked your vacuum hoses?

No codes are showing up. Yes i tried 2 different type of filters.

I checked the turbo hoses and throttle body hoses. The Tubro hoses that go to the intercooler had some oil on the side walls of the inner tube but just enough for you to smudge on your finger. The throttle body hoses were completely dry.

I also checked the the oil cap to see for any milky residue but there was none. The coolant in the radiator and reservoir was normal and also let the car cool down with the radiator cap open and checked to see if the radiator hose hardens when car is on but that to was normal. Im just hopping its a tune issue. Here is the fuel map for my car from nistune.

http://imgur.com/a/9sphi

[sns00]

Did you get it sorted out?