So I test drove a 3.8 and I think it's slower than 3.9

MustanG_guy17 · October 31st, 2007, 05:16 PM

Well I was looking at cars on this lot and seen a 2003 3.8l with 17k miles. Well I drove it and this is what I noticed. But keep in mind I have dual exhaust and CAI..

1.Engine seems quieter then 3.9l
2.Not at torqey
3.feels sluggish

Now I have been driving my 3.9l for about 8months. Im not trying to start a flame war or anything, im just stating my experience. Has anyone ran a 3.9 on a dyno?

ESG-642T · October 31st, 2007, 05:21 PM

Its all in your head...

Neither is faster than the other -

whitemustang02 · October 31st, 2007, 05:25 PM

ther isent even a .1 liter diference it is about .06 so what u are fealing is all ur mods
i raced my frends 3.9 vs my 3.8 he was stock and all i hade mac cat back a 2 to 1 to 2 set up and cai and i won
those arent big mods maby 5 hp totle and so i don't tink thay have that much more power.

MustanG_guy17 · October 31st, 2007, 05:26 PM

I geuss it is in my head lol

MustanG_guy17 · October 31st, 2007, 05:28 PM

Actually Im happy that my mods made such a difference.. lol I was thinking I gained basically nothing from cai and exhaust. But obviously not.

Hourofpain · November 1st, 2007, 02:24 AM

the 3.9's dont make any more power.
What happened was ford slightly changed the bore to stroke ratio
I beleive...

Onemanzu · November 1st, 2007, 02:26 AM

nope its making three more horses at the fly... which equates to about ... .5 monkey power at the wheel

itschristorres8 · November 1st, 2007, 08:41 AM

theres a whole 3 flywheel hp difference between the 3.9L and 3.8 which is just a figure ford gave out. it has not been proven to be true on a dyno yet. or at least that i've seen....
most differences are between 99-and earlier 2000 and 2001-2004
IMRC
MAF has a built in IAC
The harmonic balancer is different as well.
i believe those are the only differences

Ninjawafers! · November 1st, 2007, 08:45 AM

Originally Posted by itschristorres8

theres a whole 3 flywheel hp difference between the 3.9L and 3.8 which is just a figure ford gave out. it has not been proven to be true on a dyno yet. or at least that i've seen....
most differences are between 99-and earlier 2000 and 2001-2004
IMRC
MAF has a built in IAC
The harmonic balancer is different as well.
i believe those are the only differences

and the hood design

Juggalo_X · November 1st, 2007, 09:50 AM

Originally Posted by MustanG_guy17

Well I was looking at cars on this lot and seen a 2003 3.8l with 17k miles. Well I drove it and this is what I noticed. But keep in mind I have dual exhaust and CAI..

1.Engine seems quieter then 3.9l
2.Not at torqey
3.feels sluggish

Now I have been driving my 3.9l for about 8months. Im not trying to start a flame war or anything, im just stating my experience. Has anyone ran a 3.9 on a dyno?

stay off the bong pipe.

Top Gear · November 1st, 2007, 10:13 AM

The difference you feel is because of all the mods you have. I noticed a big difference with just a CAI, and tightened throttle cable.

itschristorres8 · November 1st, 2007, 04:32 PM

Originally Posted by Top Gear

The difference you feel is because of all the mods you have. I noticed a big difference with just a CAI, and tightened throttle cable.

you dont notice 3hp
just like him its in your head

Murderjetz · November 1st, 2007, 06:22 PM

it's not in your head...

with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable.
Just CAI on its own probably would be in your head if you think you notice a difference just with that though.

Top Gear · November 1st, 2007, 06:39 PM

I noticed a big difference in throttle response, not to much of any thing else. I was referring to his number 3, forgot to mention that.

itschristorres8 · November 2nd, 2007, 12:54 AM

Originally Posted by Murderjetz

it's not in your head...

with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable.
Just CAI on its own probably would be in your head if you think you notice a difference just with that though.

ok let me break this to you guys now

if your just doing exhaust...JUST exhaust no other mods. have the exhaust cut after the cats and mufflers before the axle etc...your gaining about 1-2hp
what you guys are feeling is in your head when you get your exhaust

even with the 2.25 thick exhaust i had the extra loss of back pressure lead to less of a difference

and the 3hp intake ...MAYBE 5hp now...you will not notice 5hp. it wont be til you get tuned or start getting pulleys xcal2 when your exhaust is more usful and intake. being more helpful and giving you more power

intake and exhaust v6 vs stock v6 is a drivers race. all day long. and even if both drivers are good its gonna be a TIGHT race

MustanG_guy17 · November 2nd, 2007, 08:32 AM

Originally Posted by itschristorres8

Originally Posted by Murderjetz

it's not in your head...

with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable.
Just CAI on its own probably would be in your head if you think you notice a difference just with that though.

ok let me break this to you guys now

if your just doing exhaust...JUST exhaust no other mods. have the exhaust cut after the cats and mufflers before the axle etc...your gaining about 1-2hp
what you guys are feeling is in your head when you get your exhaust

even with the 2.25 thick exhaust i had the extra loss of back pressure lead to less of a difference

and the 3hp intake ...MAYBE 5hp now...you will not notice 5hp. it wont be til you get tuned or start getting pulleys xcal2 when your exhaust is more usful and intake. being more helpful and giving you more power

intake and exhaust v6 vs stock v6 is a drivers race. all day long. and even if both drivers are good its gonna be a TIGHT race

I got a friend with a 2004 3.9l stock with the same amount of miles as mine. We should race and see lol.. But im getting rid of my car in a month for a 2005+ v6 or gt idk yet.

tjames · November 2nd, 2007, 09:38 AM

Originally Posted by MustanG_guy17

Originally Posted by itschristorres8

Originally Posted by Murderjetz

it's not in your head...

with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable.
Just CAI on its own probably would be in your head if you think you notice a difference just with that though.

ok let me break this to you guys now

if your just doing exhaust...JUST exhaust no other mods. have the exhaust cut after the cats and mufflers before the axle etc...your gaining about 1-2hp
what you guys are feeling is in your head when you get your exhaust

even with the 2.25 thick exhaust i had the extra loss of back pressure lead to less of a difference

and the 3hp intake ...MAYBE 5hp now...you will not notice 5hp. it wont be til you get tuned or start getting pulleys xcal2 when your exhaust is more usful and intake. being more helpful and giving you more power

intake and exhaust v6 vs stock v6 is a drivers race. all day long. and even if both drivers are good its gonna be a TIGHT race

I got a friend with a 2004 3.9l stock with the same amount of miles as mine. We should race and see lol.. But im getting rid of my car in a month for a 2005+ v6 or gt idk yet.

get a GT, you will kick yourself for getting another 6

Murderjetz · November 3rd, 2007, 01:12 AM

Originally Posted by itschristorres8

Originally Posted by Murderjetz

it's not in your head...

with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable.
Just CAI on its own probably would be in your head if you think you notice a difference just with that though.

ok let me break this to you guys now

if your just doing exhaust...JUST exhaust no other mods. have the exhaust cut after the cats and mufflers before the axle etc...your gaining about 1-2hp
what you guys are feeling is in your head when you get your exhaust

even with the 2.25 thick exhaust i had the extra loss of back pressure lead to less of a difference

and the 3hp intake ...MAYBE 5hp now...you will not notice 5hp. it wont be til you get tuned or start getting pulleys xcal2 when your exhaust is more usful and intake. being more helpful and giving you more power

intake and exhaust v6 vs stock v6 is a drivers race. all day long. and even if both drivers are good its gonna be a TIGHT race

huh...
well I have a 94 V6 with dual exhaust and CAI, and a lot of miles on it. I test drove another 94 V6, completely stock, with pretty low miles. that thing was incredibly noticeably slower than my car. it felt heavy and sluggish, felt like i was driving a minivan or something. I'm not a douche, I KNOW that difference was not in my head. it was in prime shape and looked nice though...it was just slow.

I have true dual, straight-through...if that changes anything...

itschristorres8 · November 3rd, 2007, 01:23 AM

Originally Posted by tjames

Originally Posted by MustanG_guy17

Originally Posted by itschristorres8

Originally Posted by Murderjetz

it's not in your head...

with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable.
Just CAI on its own probably would be in your head if you think you notice a difference just with that though.

ok let me break this to you guys now

if your just doing exhaust...JUST exhaust no other mods. have the exhaust cut after the cats and mufflers before the axle etc...your gaining about 1-2hp
what you guys are feeling is in your head when you get your exhaust

even with the 2.25 thick exhaust i had the extra loss of back pressure lead to less of a difference

and the 3hp intake ...MAYBE 5hp now...you will not notice 5hp. it wont be til you get tuned or start getting pulleys xcal2 when your exhaust is more usful and intake. being more helpful and giving you more power

intake and exhaust v6 vs stock v6 is a drivers race. all day long. and even if both drivers are good its gonna be a TIGHT race

I got a friend with a 2004 3.9l stock with the same amount of miles as mine. We should race and see lol.. But im getting rid of my car in a month for a 2005+ v6 or gt idk yet.

get a GT, you will kick yourself for getting another 6

done the 4.0s respond soooooo nice to boost

powerhouse turbo on the v6!!! 15psi ran low 11s
a guy in a 05 GT on boost ran 11.4.....sad i know...with close to 100rwhp or more depending on his booost

tjames · November 3rd, 2007, 02:08 AM

Originally Posted by itschristorres8

Originally Posted by tjames

Originally Posted by MustanG_guy17

Originally Posted by itschristorres8

Originally Posted by Murderjetz

it's not in your head...

with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable.
Just CAI on its own probably would be in your head if you think you notice a difference just with that though.

ok let me break this to you guys now

if your just doing exhaust...JUST exhaust no other mods. have the exhaust cut after the cats and mufflers before the axle etc...your gaining about 1-2hp
what you guys are feeling is in your head when you get your exhaust

even with the 2.25 thick exhaust i had the extra loss of back pressure lead to less of a difference

and the 3hp intake ...MAYBE 5hp now...you will not notice 5hp. it wont be til you get tuned or start getting pulleys xcal2 when your exhaust is more usful and intake. being more helpful and giving you more power

intake and exhaust v6 vs stock v6 is a drivers race. all day long. and even if both drivers are good its gonna be a TIGHT race

I got a friend with a 2004 3.9l stock with the same amount of miles as mine. We should race and see lol.. But im getting rid of my car in a month for a 2005+ v6 or gt idk yet.

get a GT, you will kick yourself for getting another 6

done the 4.0s respond soooooo nice to boost

powerhouse turbo on the v6!!! 15psi ran low 11s
a guy in a 05 GT on boost ran 11.4.....sad i know...with close to 100rwhp or more depending on his booost

wow thats sad. but what im saying is i would take a stock 99-04 GT over a stock 05+ s197 4.0L

October 31st, 2007, 05:16 PM	#1
MustanG_guy17 Hardcore Enthusiast 2007 Mustang GT/CS Join Date: Mar 2007 Location: Milton,Florida Posts: 1,967 iTrader: 0 reviews	So I test drove a 3.8 and I think it's slower than 3.9 Well I was looking at cars on this lot and seen a 2003 3.8l with 17k miles. Well I drove it and this is what I noticed. But keep in mind I have dual exhaust and CAI.. 1.Engine seems quieter then 3.9l 2.Not at torqey 3.feels sluggish Now I have been driving my 3.9l for about 8months. Im not trying to start a flame war or anything, im just stating my experience. Has anyone ran a 3.9 on a dyno? __________________ 2007 Mustang GT/CS 5spd: Flowmaster hushpower axle back,O/R X pipe,JLT CAI,93 Bama tune..laser interceptor dual jammers, Escort Redline RD,Laser Veil G4. MAVERICKS!!!!!!!!!! BABYYYY.. DALLAS COWBOYS

October 31st, 2007, 05:21 PM	#2
ESG-642T [8MINUS2] 2002, Ford, v6 Join Date: Feb 2007 Location: TEXAS Posts: 12,319 iTrader: 0 reviews	Its all in your head... Neither is faster than the other - __________________ Hi, You can call me Kyle Random ESG fact: Had a prochamber on his v6 before it was popular. WTB: v6 BBK valve covers

October 31st, 2007, 05:25 PM	#3
whitemustang02 MM's official Chevy guy 2002 Mustang V6 Join Date: Sep 2007 Location: Rochester, NY Posts: 2,024 iTrader: 0 reviews	ther isent even a .1 liter diference it is about .06 so what u are fealing is all ur mods i raced my frends 3.9 vs my 3.8 he was stock and all i hade mac cat back a 2 to 1 to 2 set up and cai and i won those arent big mods maby 5 hp totle and so i don't tink thay have that much more power. __________________ "Speak softly and carry a big stick" - Theodore Roosevelt "Any idiot can make a V8 fast, it takes a real idiot to make a fast V6". '02 Mustang N/A 4.3 stroker away for winter '72 Chevelle project car 454 coming '93 Bronco EFI 351W DD

October 31st, 2007, 05:26 PM	#4
MustanG_guy17 Hardcore Enthusiast 2007 Mustang GT/CS Join Date: Mar 2007 Location: Milton,Florida Posts: 1,967 iTrader: 0 reviews	I geuss it is in my head lol __________________ 2007 Mustang GT/CS 5spd: Flowmaster hushpower axle back,O/R X pipe,JLT CAI,93 Bama tune..laser interceptor dual jammers, Escort Redline RD,Laser Veil G4. MAVERICKS!!!!!!!!!! BABYYYY.. DALLAS COWBOYS

October 31st, 2007, 05:28 PM	#5
MustanG_guy17 Hardcore Enthusiast 2007 Mustang GT/CS Join Date: Mar 2007 Location: Milton,Florida Posts: 1,967 iTrader: 0 reviews	Actually Im happy that my mods made such a difference.. lol I was thinking I gained basically nothing from cai and exhaust. But obviously not. __________________ 2007 Mustang GT/CS 5spd: Flowmaster hushpower axle back,O/R X pipe,JLT CAI,93 Bama tune..laser interceptor dual jammers, Escort Redline RD,Laser Veil G4. MAVERICKS!!!!!!!!!! BABYYYY.. DALLAS COWBOYS

November 1st, 2007, 02:24 AM	#6
Hourofpain Hardcore Enthusiast 2005 Torrid Red GTO m6 Join Date: Mar 2007 Location: Virginia Beach Posts: 1,524 iTrader: 0 reviews	the 3.9's dont make any more power. What happened was ford slightly changed the bore to stroke ratio I beleive... __________________ 1996 Cobra To be sold... 2005 M6 Twin Turbo GTO Torrid Red Fully Forged LS2 Block Built to handle 1000RWHP. Fully ported Dart Heads. Edelbrock Jr Intake. Custom cut upper intake plenum. APS twin Turbo System with APS twin Fuel pumps.

November 1st, 2007, 02:26 AM	#7
Onemanzu ¡ʇsnq ɹo uʍop ǝpısdn Join Date: Oct 2006 Location: Looking for free hand jobs in poland springs nebraska... silly gooses Posts: 12,551 Blog Entries: 1 iTrader: 0 reviews	nope its making three more horses at the fly... which equates to about ... .5 monkey power at the wheel __________________ My Foz

November 1st, 2007, 08:41 AM	#8
itschristorres8 Banned 00 V6 & 09 GT 13.37@104.4mph--BONE stock GT Join Date: Aug 2006 Location: south florida Posts: 15,806 iTrader: 2 reviews	theres a whole 3 flywheel hp difference between the 3.9L and 3.8 which is just a figure ford gave out. it has not been proven to be true on a dyno yet. or at least that i've seen.... most differences are between 99-and earlier 2000 and 2001-2004 IMRC MAF has a built in IAC The harmonic balancer is different as well. i believe those are the only differences __________________ [SIGPIC][/SIGPIC] Acmillr loves me

November 1st, 2007, 10:13 AM	#11
Top Gear Regular Join Date: Aug 2007 Posts: 184 iTrader: 0 reviews	The difference you feel is because of all the mods you have. I noticed a big difference with just a CAI, and tightened throttle cable. __________________ 6er

November 1st, 2007, 06:22 PM	#13
Murderjetz Hardcore Enthusiast Join Date: Mar 2007 Location: Manitoba, Canada Posts: 1,001 iTrader: 0 reviews	it's not in your head... with dual exhaust and CAI, it is a pretty noticeable difference. It's not a huge difference but still very noticeable. Just CAI on its own probably would be in your head if you think you notice a difference just with that though. __________________ Listen to my music \| Visit my garage

November 1st, 2007, 06:39 PM	#14
Top Gear Regular Join Date: Aug 2007 Posts: 184 iTrader: 0 reviews	I noticed a big difference in throttle response, not to much of any thing else. I was referring to his number 3, forgot to mention that. __________________ 6er

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So I test drove a 3.8 and I think it's slower than 3.9

So I test drove a 3.8 and I think it's slower than 3.9

Re: So I test drove a 3.8 and I think it's slower than 3.9