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Old 05-16-2013, 03:40 AM   #1
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Mustang 2003 v6

Well I purchased a mustang 2003 3 months ago and I have done the basics already complete tune up, changing the ignition coil and brakes, so now I was wondering ways to improve performance. I am going to add a air intake to give some horsepower, but I want to know what else can I modified
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Old 05-16-2013, 05:55 AM   #2
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First 3 things most mustang people do is

1. Cai
2. Exhaust
3. Tuner
After that its really wherever you want to take your car
I recommend looking up on YouTube the m112 supercharger on our v6's if you really wanna get good performance but this will run you a min of almost $2000
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Old 05-16-2013, 06:27 AM   #3
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Around how much horsepower will that bring me up to well a estimate?
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Old 05-16-2013, 06:30 AM   #4
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Supercharge with supporting mods(cai, exhaust, posi rear end, ect) will run gt's
There's people saying they have gotten up to 300rhp with all this and bumping up the boost
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Old 05-16-2013, 06:49 AM   #5
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I been asking around for the intake the whole kit is about $270 for the K&N the best brand there is, but there's cheaper ones for like $140 but I dont know if it will give around the same amount as K&N since I been told its like a 5-10hp increase
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Old 05-16-2013, 06:50 AM   #6
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be prepared to put alot of money into your v6 to make it fast. simple bolt on's should be first though. intake, full exhaust, get a gt dual catback, gears, get a tuner.
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Old 05-16-2013, 06:50 AM   #7
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I been asking around for the intake the whole kit is about $270 for the K&N the best brand there is, but there's cheaper ones for like $140 but I don't know if it will give around the same amount as K&N since I been told its like a 5-10hp increase
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Old 05-16-2013, 06:51 AM   #8
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I been asking around for the intake the whole kit is about $270 for the K&N the best brand there is, but there's cheaper ones for like $140 but I don't if it will give around the same amount as K&N since I been told its like a 5-10hp increase
buy the one from americanmuscle. its like 70 bucks or something. they all do the same thing. an intake wont give you nothing unless u get a tuner to go along with it.
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Old 05-16-2013, 06:57 AM   #9
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Yeah I bought the cheap one from AM, for a cai They all do the same thing, ur paying extra for the name


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This us my sr racing(American muscle) paid 70 for
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Old 05-16-2013, 07:15 AM   #10
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How exactly do the tuners work and which one should I get for my mustang v6 2003? I saw a vid where they plug in the tuner underneath the dashboard ,so it reprograms the car's computer system?
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Old 05-16-2013, 07:17 AM   #11
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yeah theres a port under neath ur steering column and u just hook it up and upload one of ur custom tunes.
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Old 05-16-2013, 07:20 AM   #12
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Really there's really no installation or no need to go to a mechanic?
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Old 05-16-2013, 07:22 AM   #13
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Really there's really no installation or no need to go to a mechanic?
no. if u order ur tuner from americanmuscle.com they ask questions about ur car and its mods, then they will send u custom tunes just for ur car. then they give u instructions on how to upload them to ur handheld tuner. when u do that, just plug and play into your car to upload the tune of your choice.
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Old 05-16-2013, 07:50 AM   #14
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And the exhaust just adds more sound to the engine making it sound like a gt, but does it help the mustang in other ways too?
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Old 05-16-2013, 07:59 AM   #15
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And the exhaust just adds more sound to the engine making it sound like a gt, but does it help the mustang in other ways too?
it doesnt make it sound like a gt.. ur gona need the extea 2 cylinders for that. but it will sound better than a stock v6 at least. and yes it helps ur car breath better. wen i used to have a v6 as soon as i cut the cats off and put an off road h i felt the engine breathe better. so its worth it.

---------- Post added at 07:59 AM ---------- Previous post was at 07:57 AM ----------

before u start spending alot of money on performance wise on a v6, u should come up with a plan for it or a goal. if i were u, id worry about the looks , exhaust, and suspension for a v6. but thats just my 2 cents. theres several guys who love putting performance parts into v6's. its really your decision to make
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Old 05-16-2013, 08:00 AM   #16
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it doesnt make it sound like a gt.. ur gona need the extea 2 cylinders for that. but it will sound better than a stock v6 at least. and yes it helps ur car breath better. wen i used to have a v6 as soon as i cut the cats off and put an off road h i felt the engine breathe better. so its worth it.

---------- Post added at 07:59 AM ---------- Previous post was at 07:57 AM ----------

before u start spending alot of money on performance wise on a v6, u should come up with a plan for it or a goal. if i were u, id worry about the looks , exhaust, and suspension for a v6. but thats just my 2 cents. theres several guys who love putting performance parts into v6's. its really your decision to make
you physically felt it breathe better? as if you were one with your mustang???? :O
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Old 05-16-2013, 08:02 AM   #17
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you physically felt it breathe better? as if you were one with your mustang???? :O
you know what i mean smart *** lol
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Old 05-16-2013, 08:11 AM   #18
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you know what i mean smart *** lol
hehe
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Old 05-16-2013, 08:12 AM   #19
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Mr miyagi

Lol
Basically exhaust will add 15 more up and if you go long tube headers prochamber mid pipe and flowmaster super 10's, ull wake your neighbors in the morning
It's all about the small hp gains, they add up until u supercharge
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Old 05-16-2013, 08:15 AM   #20
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yeah id stick to prochamber mid pipe. off road h's sound decent. and off road x pipes sound like straight hondas on v6's in my opinion
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Old 05-16-2013, 09:15 AM   #21
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Yeah that's what I'm goin with
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Old 05-16-2013, 09:37 AM   #22
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This is why I'm building the sixxer to decimate corners...I just don't have the disposable income to make it "fast".
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Old 05-16-2013, 11:12 AM   #23
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See I'm in high school, or about to be out of high school, so all I really pay for is gas, And that's really it, the rest of my money normally goes to my car, LOL
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Old 05-16-2013, 11:17 AM   #24
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if that's the case i'd just put on a nice exhaust, wheels, and lower it...then start a savings account mod. after you save a few grand decide if you wanna build the v6 or trade in on a GT
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Old 05-16-2013, 12:57 PM   #25
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Yeah there's an 07 gt at a local dealership that sfter I trade my car in is only 7000
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Old 05-16-2013, 01:01 PM   #26
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I'm doing the same saving for a gt500 wat do they run for i know what a 2014 new ones but what about the 2009 how much are they now and ima still keep my sixxer it's been with me forever
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Old 05-16-2013, 01:12 PM   #27
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If you can afford to run 91 or 93 octane in the car you will feel added horsepower immediately. It sounds too easy to be true but you will believe the results and its a reasonably priced modification. Just try it once if you think I am wrong and the results will impress you.
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new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
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Old 05-16-2013, 01:14 PM   #28
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yes but if your car isn't tune to run with higher octane then you won't feel the doffrence all ill be doing is wasting money
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Old 05-16-2013, 01:23 PM   #29
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yes but if your car isn't tune to run with higher octane then you won't feel the doffrence all ill be doing is wasting money
Yes, a tune will improve it. I have a tuner and ran 93 without a tune. May be because of high mileage I felt a significant difference, but the difference was amazing. A tuner or chip is worth every penny.
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new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage
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Old 05-16-2013, 10:39 PM   #30
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93 is a waste of money. But BMW guys say to run a tank of higher octane once in a while to clean things up or something.
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Old 05-16-2013, 11:05 PM   #31
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If you're running a lot of spark advance, then you NEED higher octane in order to avoid detonation. But, unless you have higher compression pistons, higher octane isn't necessary.
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Old 05-16-2013, 11:41 PM   #32
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If you're running a lot of spark advance, then you NEED higher octane in order to avoid detonation. But, unless you have higher compression pistons, higher octane isn't necessary.
This right here...
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Old 05-17-2013, 11:08 AM   #33
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I would buy if I where u it's a lil pricey but worth it i myself have one n notice a big diff in shifts and hp my shifts r firmer and I have a quicker launch of the line and n e time I WOT I launch. It's also good to take off ur speed limiter from 110 u can also data log ur car for a better tune n clear codes
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Old 05-26-2013, 05:05 AM   #34
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I just twisted my tire and rim today and was wondering what I can do to fix it but the pressure of one of the tires is decreasing. The wheel was pull back and I have a crack on my window due to the impact
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Old 05-26-2013, 11:40 AM   #35
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I just twisted my tire and rim today and was wondering what I can do to fix it but the pressure of one of the tires is decreasing. The wheel was pull back and I have a crack on my window due to the impact
Ouch. Everything's outta whack. Door, wheel. Ask if your insurance covers it. Time for you to get some new wheels man, those are a tad to big and flashy
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