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Old 01-06-2005, 08:51 PM   #1
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what kinda numbers?

i'm getting a custom true dual setup on the mustang and wondered what the numbers i'm looking at are.

all aluminum with flowmaster 40's
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Old 01-06-2005, 09:37 PM   #2
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which numbers? gains vs. stock?
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Old 01-06-2005, 09:53 PM   #3
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no rteal gains, maybey 1- 2 hp, its mostly just for sound that it helps.
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Old 01-07-2005, 03:09 PM   #4
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if you have a manual 165rwhp@5250 and 185rwtq@2800 thats about the most you can hope for

with an auto take off 5.5% from those numbers~ with dual exhaust expect 6rwhp/tq max
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Old 01-07-2005, 05:32 PM   #5
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dual exhaust is a mod that allows for better airflow so hp is increased that way. So when you do more mods, your dual exhaust will allow for more hp to be made.
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DAMN Those are some old *** numbers!!! I need updated ones!!
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Old 01-07-2005, 05:42 PM   #6
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very nicely put ^^
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Old 01-07-2005, 07:34 PM   #7
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What would longtubes and a catted mid-pipe and I'm thinking of Flowmaster (40's) make me?

4 hp?
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Old 01-07-2005, 07:40 PM   #8
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Quote:
Originally Posted by NorwegianMustang
What would longtubes and a catted mid-pipe and I'm thinking of Flowmaster (40's) make me?

4 hp?
LTS maybe 5rwhp and you would lose a little tq at your peak about the same maybe a little more but higher up in the power band.

NO cats once again wotn help at all maybe a little hp but it will kill your down low power... it will move the tq peak up a good bit

all mufflers are about the same
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Old 01-07-2005, 08:01 PM   #9
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Quote:
Originally Posted by SpectorV
LTS maybe 5rwhp and you would lose a little tq at your peak about the same maybe a little more but higher up in the power band.

NO cats once again wotn help at all maybe a little hp but it will kill your down low power... it will move the tq peak up a good bit

all mufflers are about the same
So you gain some and lose some, but is it worth it?

(I'm thinking of staying NA)
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Old 01-07-2005, 08:13 PM   #10
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Ya, it's worth it. 3.8 engine have kinda high toque. Well higher than any 4 cylinder so I'm sure you could spare a few tq for a few extra hp. And if you're that worried about tq, go with a 4.2 swap which will give you about 30 more tq and maybe 5 more 5hp too.
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Old 01-07-2005, 09:11 PM   #11
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Quote:
Originally Posted by 97Stallion
Ya, it's worth it. 3.8 engine have kinda high toque. Well higher than any 4 cylinder so I'm sure you could spare a few tq for a few extra hp. And if you're that worried about tq, go with a 4.2 swap which will give you about 30 more tq and maybe 5 more 5hp too.
Guess I got to do that after the full exhaust change, thanks man. Then the intakes, cam and heads.
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Old 01-07-2005, 09:22 PM   #12
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how much Hp and TQ would a 3.8 get if i had ported heads, intake, and new cams. How much would it cost?
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Old 01-07-2005, 09:29 PM   #13
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Well what year 3.8 are we talking. Also you need to specify a cam. My 97 put out roughly 210 bhp and about 260 btq when i did my h/c/i swap. I went with a 216/225 cam then. Now I have a 224/230 cam, and a 4.2 w/ Bigger valve heads. That's how I have so much more hp. And i still have some work to do. I think once i get my new intake built with some long tubes I should easily have 300 bhp.
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