tom.mattin

Smoke from decat exhaust, paranoid??

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I have a impreza wrx blobeye 2003, decat straight to a (tiny) box with twin exits. On idle at say traffic lights they smoke up like !Removed! and you can smell what seems like oil and fuel but smoke colour is white. I assumed this was because of the decat. I know on idle it does 0.6% co2 and rev 1.5%+. Only does it now and again whilst in motion, usually after boosted.

It also uses a bit of oil every so often but coolant levels are spot on and no junk on oil cap so don't think it's head gasket but haven't done a compression test or anything.

Am I being paranoid or is it just because I have next to nout stopping my lovely jap fumesd4c0d9eba9617e8f7ab8d5c11e3bba44.jpg

 

 

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Have you had it remapped after you took cats off? Will be running very rich i would imagine. 

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5 minutes ago, Marshffs said:

Have you had it remapped after you took cats off? Will be running very rich i would imagine. 

I did have, but it does drink tons of fuel. Don't want to have to get it remapped AGAIN. It's not cheap :(

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No its not but if its drinking gallons your best off getting it looked at to see if it is rich/lean. Think of the fuel money if its drinking it. Could be nothing wrong with it and maybe the outside temp doing it. 

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Sorry I'm late to the party.

 

My classic started running extremely rich. It bore washed and the oil was very thin. Fortunately I did go for a Dyno when noticing something untoward. The afr was so rich it was off the scale. Turned out to be the MAF. I switched that and had it mapped again. All good since.

 

For the cost of a Dyno, I'd say go get it checked atleast. Keep an eye on your oil and if it's smoking, I wonder if your oil is already thinned and seeping past seals. The end result is a lot more costly than a diagnostic Dyno and possible remap.

 

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Thanks for input all, anyone recommend a decent place in/ near Hampshire that can do dyno for awd and are good? Many thanks 

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