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I am using a 2007 , 2.5 turbo motor. I need to keep both catalytic converters for emissions. My question is, How did you run your exhaust? Pics before body install?
Next. What did you do to keep the air flow meter that is part of the air filter box? How did you mount it?
Aux Air Pump, How did you mount this little jewel?
Thanks in advance
Bob_n_Cincy
08-14-2021, 10:58 PM
I am using a 2007 , 2.5 turbo motor. I need to keep both catalytic converters for emissions. My question is, How did you run your exhaust? Pics before body install?
Next. What did you do to keep the air flow meter that is part of the air filter box? How did you mount it?
Aux Air Pump, How did you mount this little jewel?
Thanks in advance
My up-pipe cat is pure stock. I used the FFR supplied elbow on the output of the turbo. Then my down-pipe cat out of a 04 forester xt to the FFR supplied tailpipe. Let me know your questions.
Bob
https://thefactoryfiveforum.com/attachment.php?attachmentid=152116&d=1474775135
Sgt.Gator
08-16-2021, 12:17 AM
Roy, do you have a uppipe cat, or the two cats in the downside? When the uppipe cat starts to come apart inside it will destroy your turbo. I haven't heard of a Subaru failing a sniffer test or any other electronic emissions test because of an uppipe cat delete. I suppose a visual check by a nit picking emissions officer might notice it's gone.
But highly unlikely they will notice it. They are looking for the standard cat. The stealth way to do it is to gut the uppipe cat so it appears normal but there is nothing inside to destroy your turbo.
If you have a 2007 STI 2.5L you don't have an uppipe cat. They came specifically only on:
02-05 Impreza WRX
04-05 Forester XT
04-06 Baja XT
05-06 Legacy GT
05-06 Outback XT
There's a reason Subaru doesn't do them anymore!
You should pass any emissions testing with one cat in the downpipe side.
A Google search on "Subaru Uppipe Cat delete" will find a ton of info about it.
No upside cats, Just 2 down side (California Car) I might try just one and see if I can get it to pass
Thanks