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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 02-23-2010, 12:56 AM   #31
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I did the same, with the Spectre filter.
Worked great until I started experiencing the heat lock and poor acceleration.
Sorry to everyone who disagree but, I picked up an Ebay CARB exempt 2.5" CAI and replaced the wire mesh cone filter it came with, for a K&N cone, had to use the handy spacers that came with the Spectre.
Noticed a great improvement through the bar but best at higher RPM. vs. the SRI seemed better at lower RPM. It tucks in pretty solid above the splash guard and in front of the wheel well. 01 SE.
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Old 02-23-2010, 07:31 AM   #32
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what year did this splash guard start coming on the focus?...i want one! i had to make one, but a factory one would be key
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Old 02-23-2010, 07:45 AM   #33
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k/n CAI ftw!!!
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Old 04-26-2010, 03:26 PM   #34
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I found a really cheap CAI online, threw it on the car, and it definitely made a difference. It did set the CEL on though, I have yet to fix that, I'm going to stop at Autozone tonight to find out what code it's throwing. I only paid 60 bucks for it, so I wasn't expecting much, although being that it's wayy better than stock, I will be investing in a quality one soon. My inspection isn't up until December, so I have plenty of time to get it resolved.
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Old 04-26-2010, 04:04 PM   #35
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CAI FTW!!! UNLESS you live in an area that is prone to flooding like my Houston members.
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Old 04-28-2010, 05:27 AM   #36
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So I went to have my car checked to find out what my check engine light was on for, and it said all 3 of my O2 sensors were bad, and that my engine was running too lean!! This is ridiculous! I can't afford to replace all those, is there a chance it has to do with the intake rather than the sensors themselves? I can't imagine it being anything else, I mean how would they all go at once??
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Old 04-28-2010, 12:00 PM   #37
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Posted via FF MobileIntake - try cleaning maf, rechecking connections & resetting computer B4 chucking it for now...
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