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DURATEC Performance (2003-2007) The place to chat about any Duratec 23, 23E, and 20 engine performance, tuning and exhaust related upgrades.

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Old 10-01-2012, 05:54 PM   #1
Demonic240
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What mods can I do?

I'm looking to do some mods soon (probably not until next year) and wanted to know what all I could mod (performance wise) while still being legal and able to pass emissions in Texas.


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Old 10-01-2012, 06:12 PM   #2
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General Technical Chat is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls. For modifications, you should check out the Duratec Performance Forum because that's the engine you have. Other performance forums include Wheels, Tires, Brakes and Suspensions and Car Audio and Electronics.

Moved to Duratec Performance Chat.
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Old 10-01-2012, 07:54 PM   #3
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I have a magnaflow exhaust with hiflow cat for sale if interested







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I'm looking to do some mods soon (probably not until next year) and wanted to know what all I could mod (performance wise) while still being legal and able to pass emissions in Texas.
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Old 10-01-2012, 08:04 PM   #4
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Thanks. What is a hi flow cat and is it street legal/emissions safe?
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Old 10-01-2012, 09:29 PM   #5
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Most mods are street.legal except those that remove the catalytic converter or 02 sensor. A hi flow cat is.a legal catalytic converter that allows for more exhaust gas to flow from the engine, meaning the engine will breathe better causing a gain in horsepower.
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Old 10-01-2012, 10:00 PM   #6
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I have no cat or anything on my car, race header, exhaust, custom tune, FRPP suspension, among many other mods. I passed inspection even without my header. On newer cars they only run an obd test for CEL error codes. They don't do an actual emissions test.
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Old 10-02-2012, 01:28 AM   #7
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Originally Posted by crice8 View Post
I have no cat or anything on my car, race header, exhaust, custom tune, FRPP suspension, among many other mods. I passed inspection even without my header. On newer cars they only run an obd test for CEL error codes. They don't do an actual emissions test.
Depends on garage. My garage i deal with dose actual emisions test.

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Old 10-02-2012, 08:05 AM   #8
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Depends on garage. My garage i deal with dose actual emisions test.

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Drumr you are in PA.... Here in Texas there is not a emissions test.... It differs from state to state....
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Old 10-02-2012, 10:36 AM   #9
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Mods= how far do you want to go?

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Originally Posted by Demonic240 View Post
I'm looking to do some mods soon (probably not until next year) and wanted to know what all I could mod (performance wise) while still being legal and able to pass emissions in Texas.
What are you looking for? Another words how far do you want to go? Basic mods= cai/sri, flex back exhaust & a tune w/ get you going. For more add a 23 head w/ a set of cams, a header. Add a dogbone & a STS too.
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Old 10-02-2012, 07:41 PM   #10
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I'm not looking at dropping too much in upgrades (thinking under $2k for everything) plus I need a new radio at some point. Would like to leave it in a good resell condition to for later.
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