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Discussion Starter · #1 ·
Hi everyone, like 10 month ago I bought my focus ST and one of the upgrades I did was a catless downpipe and payback, after that is a really bad smell coming out the exhaust, is this normal in this car? I don't get the tuner yet, is that's gonna help with the smell? Help please, thanks in advance
 

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Yep, welcome to the catless life. It's quite possible you are burning off some oils on the downpipe, but most likely you are smelling freshly burned unfiltered freedom (gas).

No, tuning won't help.
 

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You don't have a catalytic converter so there's that. And that's all.
 

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Discussion Starter · #5 · (Edited)
But this is not the first car I do that, I used too have a Honda CRX, Acura Integra, Eclipse GS-T and all of them with pure pipe all the way from the engine to the back, so I know, don't having a cata is not the problem
 

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Wait till you mix ethanol into it yaha
Lol... my car always smells drunk.
I've ran other cars with the cats deleted and this car tends to smell more, I think it has to do with it being a Direct Inject engine.
 

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But this is not the first car I do that, I used too have a Honda CRX, Acura Integra, Eclipse GS-T and all of them with pure pipe all the way from the engine to the back, so I know, don't having a cata is not the problem
Sorry man, you may have not noticed it with those other cars, it is definitely because you are catless. As previously mentioned in this thread.

Oh, and a little time to work on grammar goes a long way, thanks.
 

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Discussion Starter · #9 ·
Someone can please help me, I don't want to start spending money like crazy, trying to find what the problem is.
 

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you made a change and something happened thats directly related to the change. catless downpipes make the car smell.
 
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