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Catless DP question

This is a discussion on Catless DP question within the Focus RS Performance forums, part of the Focus RS Garage category; Ok so for the guys who have put a catless dp on your RS. Have you had any issues with cel codes? Also does your ...

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Thread: Catless DP question

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    Supporting Member JWC67896's Avatar
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    Catless DP question

    Ok so for the guys who have put a catless dp on your RS. Have you had any issues with cel codes? Also does your state have emissions testing. If so who did your tune and did you have to let them know it's a daily type driver or a car that is used for more than just track. Thanks in advanced. All info helps!

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    RS Rookie the_andromeda_sect's Avatar
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    Haven't modded my RS yet, but on my GT-R I took out the cat and had a speed density tune, it did not meet standards at all and I had to find a guy who could...."help"...me pass testing with a custom "neutered" tune, ha. Good luck man!
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    Supporting Member Stiletto's Avatar
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    Quote Originally Posted by JWC67896 View Post
    Ok so for the guys who have put a catless dp on your RS. Have you had any issues with cel codes? Also does your state have emissions testing. If so who did your tune and did you have to let them know it's a daily type driver or a car that is used for more than just track. Thanks in advanced. All info helps!
    No CELs.

    The Commonwealth of Virginia does not, but some counties have testing. But, I have Florida plates, so either way, I wouldn't have to get tested.

    Adam tuned me. I did not disclose the use of my RS. Although, I'm sure if I asked him to modify parameters to my driving goals, he would comply.
    JacksonRacer likes this.

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    If you have FL tags then of course you would not bet tested in VA. If you had VA tags, you would have failed due to your tune. I run a tune on my Raptor and I failed the VA emissions test.

    Quote Originally Posted by Stiletto View Post
    No CELs.

    The Commonwealth of Virginia does not, but some counties have testing. But, I have Florida plates, so either way, I wouldn't have to get tested.

    Adam tuned me. I did not disclose the use of my RS. Although, I'm sure if I asked him to modify parameters to my driving goals, he would comply.

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    Ok so won't pop any CEL codes in ny we don't have smog testing as long as the o2 sensors show as ready and also the heaters are working.

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    Quote Originally Posted by Raptor911 View Post
    If you have FL tags then of course you would not bet tested in VA. If you had VA tags, you would have failed due to your tune. I run a tune on my Raptor and I failed the VA emissions test.
    There was a time where it didn't matter what plates you had. Your physical residence determined that you had to adhere to the county regulations. Just like window tint.

    I had my WRX tested, just for fun...it passed on a free flowing exhaust. So, who knows. The RS may pass the sniff test.

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    Depends on your county, pretty much all of Northern VA will require emissions. Take it down to the Piedmont region of VA and your golden but the state boys have an ear for "loud pipes" :-)

    Sent from my 2PQ93 using Tapatalk

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    Unless you install 02 simulators then yes you will set a Catalyst efficiency code and your CEL will be on, cause the downstream O2 will not be showing proper readings. Doesn't matter WHAT state you reside in...the idiot light will come on!
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    add a j-style defouler on the 2nd o2 sensor
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    Quote Originally Posted by NZWINRZ View Post
    Unless you install 02 simulators then yes you will set a Catalyst efficiency code and your CEL will be on, cause the downstream O2 will not be showing proper readings. Doesn't matter WHAT state you reside in...the idiot light will come on!
    Not unless you tune it out like previously mentioned.
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