Hmm.. well ima c what happens after this new ecu...definately white smoke with no other colors, definately not sweet smelling either... I checked my radiator fluid and it looks normal, also the car has had zero heating troubles, not to mention i already had a blown headgasket once and put a metal one in good to about 500hp, and ive got about half of that so i doubt its the headgasket...air/fuel gauge has been acting a little different now although it not staying on either rich or lean, so maybe the new ecu will correct this. Also my car is barely any louder than it was with the cat on and its a lot deeper sounding...the cat is staying off, sorry ...thanks for everyones input but ill c after xmas when i replace all these gaskets and ecu, and if its still doin it...then i guess its time for heavy investigation..

 

You have a wideband o2?

 

nope

 

have you checked your tire fluid? How about your exhaust belts? .................lol jk. I have seen things like this before, I think its mostly do to the fact you took the cat off. You have to remember, the POINT of a cat is to reduce emmisions, and that white smoke your spewing out is what they call emmissions, its what the cat is there to stop from happening. So, I'm pretty sure it has something to do with that, and also with burning oil somewhere. I've also learned that white smoke=oil.

 

yea i was kinda thinkin that it might be jus because i took the cat off too, oh well..

 

Just a little update, it seems to be getting progressively worse over time. Its white and does not smell weet like one person said earlier, its more n more smoke as time goes on? Is it possible that seals or something internal could be wrong? i replaced the manifold and turbo outlet gaskets. And the oil and coolant both look normal. Could the air/fuel be causing this? because i now have a mines ecu on along with megan manifold/turbo outlet. Should i have the car tuned do u think?

 

Well if its oil burning, it could be rings, and they may just be getting worse over time...

Edit: Just had another thought. Why not get a compression test? If you have bad rings it'll show up. Or make your own little device to pressurize the cylinders. Hollow out an old spark plug and rig it up so you can attatched it to the air compressor. (idk if I posted this already or not..oh well) Places to check for leaks (just in general, a little extra info) is to listen at the exhaust for any air comin out (bad exhaust valve), at the intake manifold (bad intake valve), look for bubbles in your coolant (bad head gasket), and to look for bubbles or any sounds comin out of where you fill your oil. (that would be the bad rings)

 

Maybe since your car no longer has a cat, the computer takes a while to adjust to your new "oxigen" values from the O2 sensor, and as it changes its values inisde the ECU, the problem gets worse. Getting it tuned may help, since like I said, the computer is expecting a cat to be there, so since it is not there, it should be programed to work diferetnly. A new gasket can also mean that it wasn't properly installed, or it may have been defective from the factory, or taking it out cracked/broke something else. Just because its new doesn't mean its good and will work perfectly.

 

right, well it smoked before i put the gaskets in, its just its gotten worse so imthinkin that thats probably not it, i will go get a compression test done then, isnt like 130 or above a good number? any suggestions of a place to get it done at or just a local shop? also how much are they? Lastly i guess im going to get the car tuned, is it necessary for a s-afc (or any other brand) to tune the a/f ratio or can they do that with theyre computer?

 

I'm not exactly sure on what number or higher (i.e 130 or higher) is ok, but I know that 180 is around what you want.

 

Ok, please I need to clear this up, now

WHITE SMOKE is not oil!!! It water, condinsation, coolant.

Blue smoke is oil. All cars have a white smoke emitting for a few seconds at start up. That is the the moisture in the cylinders(from ambient air) Condending the the cylinder walls when the engine is off an standing for a time, then burnt off very quickly.
Next, if it is thin smoke...dont worry, but if the smoke is thick and dense worry. That is a gasket or even a crack in the head/block. I dont know, but do the sr turbo have a coolant line to the turbo? if so that seal might be bad allowing coolant to blow by and into the exhaust stream(I would definatly check that out now) If they dont have a coolant line....how cold is it right now where you live, it is winter, and ummm yea smoke is normal in all cars, especially when it 32 degrees outside or close to it.

 

Yea they do have a coolant line but i duno bout all that, it didnt do it til the cat was removed so i dont think that is it. And yes i realize cars do it when they start, but mine is constantly almost everytime i let off the gas and idle or stop. And i know cars have white smoke coming out when its cold...but its 70 here...I duno some friends said it smelt like oil to them but i duno, cant be the headgasket, and i dont see how it would be the head/block because its not really eating up any coolant or overheating...im stumped so im jus leavin it for now i guess...Thanks for everyones input though.

 

OK, hmmm. Well if it were me, I would definatly check the turbo. If you never had the problem with the cat. The cat was controling the extra oil/water...whatever, so you didnt notice it. But once you took it off, then you notice it. Oh yea, do you have two o2 sensors, or just one? I would definatly take to turbo off and try another, or have the current one checked out