hi these last few days my 98 wrx seems to have a lot of smoke coming out of the exhaust, i did a downpipe decat on it 3 weeks ago could it be running rich as oil and water levels are fine . or is it due to the decat and cold weather its a 3" exhaust from turbo back cheers j

 

Mines the same this time of year. looks like a cloud is following me until it's warmed up.
I also have a 3" decat.

 

could be condensation , its the first time ive had a car with a decat it was doing it after about 30min driving at the weekend (was cold and drizzling) mate rekons it smells abit petrolly when on choke j

 

condensation mate same as when you breath in this weather

 

Hmmm, i think its where the warm air is meeting the cold

 

so does the cat stop some of the condensation then, my mate standard focus rs had next to no smoke/steam from his

 

I cant believe a thread has been started on condensation out the exhaust WTF ???

where you from, mars ?

all cars do it,yes the decat will alllow more flow so more of the "smoke" but its cold,xhaust gases are hot = ................

 

as said... decats are more prone to this when idling

 

yes just dont tell the fbi , where did i leave my space ship

 

Hmmm when the exhaust is warm after driving home then left over a period of time, the warm exhaust will get condensation inside, when its cold outside. otherwise what is the liqiud that comes out from the exhaust on start up??!!!!

 

Petrol?