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Old 08-10-2011, 08:35 PM   #1
07FocusZx3
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Question about having a tune

So I bought a fswerk tune for my car and over all the car is faster. Just wondering if it's normal for the car to fall on it's face in 4th gear at 90mph or if it's properly tuned have power past 90mph Mods are in my sig.


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Old 08-10-2011, 09:19 PM   #2
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Definitely shouldn't fall on it's face. Sounds like your tune might still need some fine tuning. I have Tom's tune (not fine tuned yet, basic generic tune) and still my car pulls past 90. Come to think of it, had no problem with the stock tune pulling past 90.
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Old 08-11-2011, 06:14 AM   #3
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Take the tune out and see if the issue is still there , If it goes away then you know its a tune issue

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Old 08-11-2011, 09:45 AM   #4
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Could be a plugged fuel filter if not the tune. Mine would do that in third gear at 5400 rpm. I changed the fuel filter and it runs fine now.
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Old 08-11-2011, 12:20 PM   #5
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So being n/a and having the mods and tune I have should I expect the power to dropp off suddenly at 90mph in 4th gear? I try the stock tune this weekend see what it does.
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Old 08-11-2011, 12:38 PM   #6
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Just remembered I have the anti-foulers on the 02 sensors to prevent the cel. Could this throw things off?
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Old 08-11-2011, 02:45 PM   #7
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Quote:
Originally Posted by 07FocusZx3 View Post
Just remembered I have the anti-foulers on the 02 sensors to prevent the cel. Could this throw things off?
no. That wouldn't affect it.
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Old 08-11-2011, 06:13 PM   #8
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You need the rear oxygen sensor delete.

Quote:
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Just remembered I have the anti-foulers on the 02 sensors to prevent the cel. Could this throw things off?
You don't need thou's w/ a tune if you told them to set your tune w/a rear oxygen sensor delete. When you order your tune, there is all the option's to do or delete. You are paying for it, I'd use it. That's part of a tune to use. & check thou's anti-fouler's, how far can you throw?
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Old 08-11-2011, 06:41 PM   #9
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lol I took them off once I remembered since I did have the rear o2 disabled.
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Old 08-11-2011, 09:15 PM   #10
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Send your tuner some datalogs and have him figure out what the issue is , after all thats what you paid for

Tom
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