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Old 08-21-2013, 04:52 PM   #1
Webstang11
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Default Roushcharged mustang gt

Hey guys new car just got it I was wondering do you have any idea what my 2007 mustang gt m90 roushcharged mustang with off road x pipe and flow master 44s would have?
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Old 08-21-2013, 05:19 PM   #2
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Do you have a boost guage? I believe the normal peak boost is about 9-10 psi for the m90. It's dangerous to stare at your guage when going WOT with a blower, but 3rd gear shouldnt be too bad since I don't even spin my tires in 3rd when they're warmed up.

If yours is about 9psi, then i'd guestimate 400-450whp, depending on boost and health of motor.

Oh, and post pics.
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Old 08-21-2013, 05:24 PM   #3
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No boost gauge would it be wise to buy one
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Old 08-21-2013, 05:26 PM   #4
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Quote:
Originally Posted by Webstang11 View Post
No boost gauge would it be wise to buy one
I believe the most important one is A/F guage since that determines if your motor goes ka-boom, then a boost guage just so you know about how much hp you're putting down, then a fuel pressure guage. Then last but not least, a knock guage would be more insurance (never seen these but someone made a topic about them yesterday)

Guages and pods can be expensive but it's not only safety but also can look cool.


No pics? Imaginary car?
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Old 08-22-2013, 01:47 AM   #5
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No m90 is making 9-10 psi......I wish. 5 psi is normal. Depending on your other mods you should be putting down around 375 ish rwhp if stock. Adding a cai, longtubes, smaller pulley and cams will improve it. All of those of course would need a new tune.
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Old 08-22-2013, 11:15 AM   #6
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No need for gauges on the M90....you're not making enough boost to be concerned, just enjoy it!

Oh, and try punctuation...doesn't this read easier?

Quote:
Hey guys, new car, just got it. I was wondering do you have any idea what my 2007 mustang gt, m90 roushcharged, mustang with off road x pipe, and flow master 44s would have?
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Old 08-22-2013, 11:18 AM   #7
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Quote:
Originally Posted by Roy_R View Post
No need for gauges on the M90....you're not making enough boost to be concerned, just enjoy it!

Oh, and try punctuation...doesn't this read easier?
Not really.
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Old 08-22-2013, 02:48 PM   #8
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Thanks a lot guys ill post a picture tonight! Oh and yes I have a tuner as well! Would long tube headers be a wise investment?
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Old 08-22-2013, 03:10 PM   #9
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Agree with 808muscle, 5 psi boost with a Roushcharged M90 and stock pulley. Horsepower numbers maybe slightly lower at @355-365.
Long tube headers, pulley and tune will help horsepower numbers. A one piece driveshaft will help with torque.
Put it on a dyno for the real data.
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Old 08-22-2013, 03:55 PM   #10
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How much added horsepower would headers give you?
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