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Old 02-03-2014, 08:17 PM   #11
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I swapped out a IM with 90k~ on it, in good condition no rust/outer wear and clean on insides.

Replaced gaskets and PCV hose/valve. Seems like car runs better now but will find out after fill up etc for mileage. Need to do system clean air/fuel/exhaust since i did a new exhaust just beforehand. Had to use old IAC though, new(er) one had issues.
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Old 02-03-2014, 08:32 PM   #12
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Quote:
Originally Posted by Fangren View Post
I swapped out a IM with 90k~ on it, in good condition no rust/outer wear and clean on insides.

Replaced gaskets and PCV hose/valve. Seems like car runs better now but will find out after fill up etc for mileage. Need to do system clean air/fuel/exhaust since i did a new exhaust just beforehand. Had to use old IAC though, new(er) one had issues.
Hey that sounds great.
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Old 02-05-2014, 06:15 PM   #13
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After careful consideration I think im going to check all the components of my air intake air box system make sure its sealed. that could be why im having an issue, if its not sealed especially before MAF
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Old 02-18-2014, 11:06 AM   #14
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Any one have a how to for removing the tuble flaps on my 05 st? Its starting to be noticable and gas milage has went down over the last 6 months
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Old 02-19-2014, 01:47 PM   #15
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There is a VERY long thread on tumble flap delete in the duratec performance section, you can find alot of useful information in that thread but it is not a direct "how to" instructions for it. I just replaced my manifold because of the tumble flaps falling apart, I went with a knockoff cosi for multiple reasons but if you don't have a big power build in mind just deleting the tumble flaps isn't a bad idea, you will still need a tune though. I may take my old manifold and delete the tumble flaps on it just to do a write up on how to do it. You could also try to find an intake manifold off of a ford escape with the duratec engine, it is the same as the focus manifold except doesn't have the tumble flaps so you could just bolt that manifold right on and be done.


And @fangren, its more important to make sure everything is sealed up AFTER the MAF. If you have a leak AFTER the MAF then that will allow unaccounted for air into the engine that the MAF sensor never saw a.k.a. a vacuum leak. If you have a leak BEFORE the MAF it won't cause much of an issue because all that air still passes by the MAF and is accounted for by the ECU.
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Old 02-19-2014, 01:47 PM   #16
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There is a VERY long thread on tumble flap delete in the duratec performance section, you can find alot of useful information in that thread but it is not a direct "how to" instructions for it. I just replaced my manifold because of the tumble flaps falling apart, I went with a knockoff cosi for multiple reasons but if you don't have a big power build in mind just deleting the tumble flaps isn't a bad idea, you will still need a tune though. I may take my old manifold and delete the tumble flaps on it just to do a write up on how to do it. You could also try to find an intake manifold off of a ford escape with the duratec engine, it is the same as the focus manifold except doesn't have the tumble flaps so you could just bolt that manifold right on and be done.


And @fangren, its more important to make sure everything is sealed up AFTER the MAF. If you have a leak AFTER the MAF then that will allow unaccounted for air into the engine that the MAF sensor never saw a.k.a. a vacuum leak. If you have a leak BEFORE the MAF it won't cause much of an issue because all that air still passes by the MAF and is accounted for by the ECU.
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Old 02-19-2014, 08:54 PM   #17
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Quote:
Originally Posted by Black05 View Post
Any one have a how to for removing the tuble flaps on my 05 st? Its starting to be noticable and gas milage has went down over the last 6 months
[QUOTE=Phestezio;5503521]You could also try to find an intake manifold off of a ford escape with the duratec engine, it is the same as the focus manifold except doesn't have the tumble flaps so you could just bolt that manifold right on and be done.
^^^^^^^^^^^^^THIS^^^^^^^^^^^^^^^^^^^

Thats what I'm going to do soon= escape23 i/m, pcv hose & massive's egr delete plate.
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Old 02-20-2014, 12:24 PM   #18
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@Felix, I know the escape manifold is the same as ours without the tumbler flaps but its still plastic like ours correct? The escape doesn't have an aluminum IM does it?
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