My friend dynoed with almost those exact mods, only thing different is he had a intake spacer that averages about 5rwhp and 7rwtq. Oh and he's running a single exhaust
He made 181RWHP and 205RWTQ, so you should be around 176RWHP and 198RWTQ.
If anything, you may lose back pressure and lose low end torque. But I've heard that you gain torque in the higher power band. If you did it, it would be more for sounds and/or looks. But I might be an idiot, so don't quote me..
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2000 V6
A.M. CAI
Dual exhaust w/Flowmaster super 44's.
GoodYear F1 tires
17" five spoke GT rims
Painted calipers, Painted pony, flat black painted hood stripe, flat black painted spoiler.
If anything, you may lose back pressure and lose low end torque. But I've heard that you gain torque in the higher power band. If you did it, it would be more for sounds and/or looks. But I might be an idiot, so don't quote me..
you do get an increase in rwhp but not that much. its around 15 hp which is around 10rwhp. you may lose back pressure if the diameter of the exhaust is larger than 2.5 inches.
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2000 auto:
Completed mods:
GT Hood Scoop, Cobra R Bumper, Blackout Panel, Tinted Tails, Tinted Windows (30% side mirrors; 20% rear), Jensen 7" Touchscreen monitor, Chrome Headlights with no amber light, Black Bullitts 17x8, Cold Air Intake, Sniper Special Forces Tuner, True Dual Exhaust, White Face Gauges, Bullitt Cup holder/ AC Faceplate/Knobs/Ebrake, FRPP Hood Pins, Mach 1 Grille Delete
If anything, you may lose back pressure and lose low end torque. But I've heard that you gain torque in the higher power band. If you did it, it would be more for sounds and/or looks. But I might be an idiot, so don't quote me..
2.25" is perfect, but 2.5" is acceptable.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
I say around 160-175rwhp depending if you have on auto or 5-speed.
I have check several places, but this one said it best. I hate to quote another site, but... 2002 Ford Mustang
The powertrain and performance of the V6 is good, but nothing exceptional. The split port V6 engine is strong with a 3.8 liter block that powers up 190 horsepower and 220 foot pounds of torque. The GT is more powerful with a 4.6 liter V8 engine with overhead cam modular. The engine creates 260 horsepower and 302 pounds of torque which makes the horses grumble at all times.
What? Did the 2003 lose 30 horses? I know consumer reports dogged the 2003 for some reason vs. 02, but man...
I pulled this up from msn, just put 3 over the 2002 in the address to get your specs:
I have check several places, but this one said it best. I hate to quote another site, but... 2002 Ford Mustang
The powertrain and performance of the V6 is good, but nothing exceptional. The split port V6 engine is strong with a 3.8 liter block that powers up 190 horsepower and 220 foot pounds of torque. The GT is more powerful with a 4.6 liter V8 engine with overhead cam modular. The engine creates 260 horsepower and 302 pounds of torque which makes the horses grumble at all times.
What? Did the 2003 lose 30 horses? I know consumer reports dogged the 2003 for some reason vs. 02, but man...
I pulled this up from msn, just put 3 over the 2002 in the address to get your specs:
OK , I could have sworn her said HP in general. If people are curious about the difference however: Yes it's true. 15% deviation is standard or 85% efficiency output. And that stays pretty constant due to the drivetrain friction and gear pressure angles, ect. The extra loss in the auto is mostly ATF oil pumping losses. So about 82% output on your automatics. Every engine is slightly different so you may find info on your specfic block.
2003 mustang gains from these mods? 
2002 v6 STOCK split port: 190 HP 220 lbs Torque 
, I could have sworn her said HP in general. If people are curious about the difference however: Yes it's true. 15% deviation is standard or 85% efficiency output. And that stays pretty constant due to the drivetrain friction and gear pressure angles, ect. The extra loss in the auto is mostly ATF oil pumping losses. So about 82% output on your automatics. Every engine is slightly different so you may find info on your specfic block.
