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Old 06-26-2015, 03:04 PM   #1
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what can I do?

I have a 2003 mustang 3.8 with 178,000+ miles. I do not want to hot rod it, my racing days are long gone, but I'd like to add 15-25 horses and improve gas mileage (now averages 14).
I have CAI that I will install soon but have looked at 65mm throttle body, coil pack and dual exhaust.
It seems that I read yes it will help then the next guy says no it won't. It looks like the guys who sell parts are all YES but then someone says it caused check engine light to stay on all the time and took other mods to fix that.
Does anyone have experiences that they could help me decide what is best to do.
Thanks
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Old 06-27-2015, 08:33 AM   #2
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Tune.
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Old 06-27-2015, 10:27 AM   #3
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I <3 my tune. I get better power and way better fuel mileage


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Old 06-27-2015, 11:06 AM   #4
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Full bolt ons will give u that
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Old 06-27-2015, 11:30 AM   #5
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If your average is 14mpg with a 3.8L and you're not hot rodding it, I would highly recommend doing regular maintenance because that is pretty low for a 3.8. I used to get around 18-20mpg with my 2000 around the city. Install the CAI, change spark plugs, wires, fuel filter if you haven't already. Clean the TB, at least until you get a new one. I would start there for the MPGs. As for power adders, the CAI won't give you much gains, but will help. As mentioned above, I would invest in a tuner. This will probably give you your best bang for the buck and some have also seen an improvement in MPGs. This way, you have the tuner handy when you add other mods down the road. I have the BAMA x4 from American Muscle and I love it! Mostly because of the free tunes for life. Goodluck!
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Old 06-27-2015, 07:51 PM   #6
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I appreciate the help. I will let you know what works.
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