Go Back   MustangForums.com > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang > 4.6L General Discussion
Sign in using an external account
Register Forgot Password?

4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

New From MASS

Thread Tools Search this Thread
Old 08-23-2012, 09:22 PM   #1
Join Date: Aug 2012
Vehicle: 2004 Mustang GT
Location: Massachusetts
Posts: 2
Default New From MASS

Hey guys just purchased an 04 Gt for $7k. Looking for more horses as we all are. Any suggestions besides the normal KB, tune, intake, exhaust? Thanks
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
Saucy is offline   Reply With Quote
Old 08-24-2012, 01:10 AM   #2
2nd Gear Member
Join Date: Aug 2012
Vehicle: 2001 Mustang GT
Location: NC
Posts: 153

Well i have a pretty stock 2001 GT vert (auto) other then added flowmasters to stock exhaust and have had time to drive it as such (as i bought it July 3).. it had good power but getting it to (get a wheel) was alittle tough with traction control on.

My first mod was a SC3 x3 hand held tuner from BAMA to which i have tired Street and Performance tunes but not Race yet.. current is Performance tune and the car has alot of added torque as i can override traction control now without turning it off from a dead stand still without useing the brake as it will light them up and make the car go side ways and bark the tires when changing 2nd gear.. it's not a 426 Hemi but for the money it's one of the best upgrades and gets the car where it's should of been from factory.
Convex is offline   Reply With Quote
Old 08-24-2012, 03:46 AM   #3
6th Gear Member
mustangman02232's Avatar
Join Date: Dec 2004
Vehicle: 03 cobra vert
Location: Ludlow, Mass
Posts: 15,784
Send a message via AIM to mustangman02232 Send a message via Yahoo to mustangman02232

Where about in mass?

03 mustang cobra vert
CAI, catted H, flows diablow tuner, DRT rotors, hawk pads, SS lines, MM FLSFC

and a lots of parts awaiting install

2009 ford F350 CCSB Lariat 5.4 (DD)
borla cat back, K&N, SCT tuned, Leveled, tinted, smoked cabs/markers, fisher mm2

99 Mustang GT vert 35th (SOLD)
02 Mustang 3.8 vert(SOLD)
mustangman02232 is offline   Reply With Quote
Old 08-24-2012, 07:25 AM   #4
uberstang1's Avatar
Join Date: Jul 2004
Vehicle: 1997 Mustang GT, 2002 F150 XLT 4x4 Triton
Location: wilkes-barre PA
Posts: 9,462
Send a message via AIM to uberstang1 Send a message via Yahoo to uberstang1

Welcome to the forum.
Street Car, 4v D1sc, 20psi,viper spec t56, Team Z/ UPR suspension.
uberstang1 is offline   Reply With Quote
Old 08-24-2012, 07:28 AM   #5
cliffyk's Avatar
Join Date: Dec 2006
Vehicle: 1998 SL500
Location: Saint Augustine, FL
Posts: 10,914

You have pretty much described the meaningful bolt-ons, I generally recommend the following, in this order:

  • Open up the exhaust, 2-1/2" from the manifolds to the back bumper. Install an H- or X-pipe per your pleasure, the only practical difference on the street is the sound. H-pipe = Musclecar, X-pipe = NASCAR. Select "off-road" or catted, again it makes no practical difference--o/r pipes are louder.

    There are many that say chambered mufflers like the Flowmasters sound better with H-pipes, and that straight through mufflers like Magnaflows sound better with X-pipes. Having owned both combinations (and scrapping the H-pipe and Flows) I am among them.
  • The next thing to do is to buy a tuner, handheld with "tunes for life" or a more sophisticated system if you plan on doing your own tuning. The stock tune was designed to make the EPA happy, run on 87 octane swill, and insure that there was no way a GT owner could possibly hurt the engine, regardless of how hard they romped on it. The ignition timing is absurdly conservative, and in open loop it runs pig-rich; especially the '03s and '04s with the pink 21 lb/h injectors, that will dip into the low 11s and even high 10s AFRs at WOT.
  • Then if you want to wake up street performance change the rear-end gears. The ratios 3.73:1 and 4.10:1 are the most popular--I will not get into which is "best" as that is a very subjective discussion. I will say that I got 3.73s when my engine was near stock, and if I had it to do over again I would have installed 3.55s or even stayed with the 3.27:1 stock gears.
  • After the above install an aftermarket upper plenum and 70 mm throttle body. Again it really doesn't matter which maker--read more about that here. Some will say get a 75 mm TB if you plan on going f/i some day, to which I say nonsense. In the first f/i and n/a are distinctly different environments with regard to intake flow, and in the second a supercharger or turbocharger will cost so much that another $100 will be a ****-hole in the snow by comparison--and you can easily sell that 70mm TB on eBay for $50 to $60.
Beyond the above there really isn't much to do in the "bolt-on" realm. CAIs (Cold Air Intakes) are a complete waste, some actually hurt engine output. The stock intake is a CAI and a very good one at that.

Things like underdrive pulleys, lightweight flywheels and aluminum drive shafts can improve acceleration, but only if you are a "drive it like you just stole it" (DILYJSI) )sort of person. I have those things, and must admit that upon occasion, under safe conditions, I am a DILYJSI sort of driver.

Don't waste money on after market COPS, fancy spark plugs, cotton gauze air filters, special oil treatments or anything where the person selling it presents claims that don't make sense. The reason they don't make sense is because they don't make sense.

If there were some magic elixir or device that could actually improve fuel economy or power the automakers would be buying or licensing it to make the Corporate Average Fuel Economy higher, or to give them bragging right over the competition. They don't because there is no magic or snake oil.

Above all keep in mind that of Cheap, Fast and Safe you only get to pick two.

BTW, I lived in Plymouth for 45 years--been down here for 20. I miss crisp clean air; there is a permanent musty smell here that you do get used to, and having four seasons; we have 2-1/2, hot friggin' hot, and nice--but I do not miss scraping and shoveling--not one bit...
-cliff knight-
SOLD! - 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum,
Delta Force tuned, Steeda UDPs, Ralco flywheel,
RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq

Engineering is, at its base, making what you want from what you have.
At its extreme it is making what you want from what you can get.

Last edited by cliffyk; 08-24-2012 at 07:31 AM.
cliffyk is offline   Reply With Quote
Old 08-24-2012, 07:37 AM   #6
3rd Gear Member
03gt04mach1's Avatar
Join Date: Dec 2009
Vehicle: '03 Mustang GT & '04 Mach1
Location: Acworth,Ga.
Posts: 812

Welcome Saucy. There's always room in the Corral for another Mustang. Seems to me like you got a DEAL. Hope it's in real good shape. Welcome again.
03gt04mach1 is offline   Reply With Quote
Old 08-24-2012, 07:21 PM   #7
Join Date: Aug 2012
Vehicle: 2004 Mustang GT
Location: Massachusetts
Posts: 2

Originally Posted by mustangman02232 View Post
Where about in mass?
North Shore
Saucy is offline   Reply With Quote
Old 08-24-2012, 07:30 PM   #8
Soldier GT
6th Gear Member
Soldier GT's Avatar
Join Date: Aug 2007
Vehicle: 2003 Ford Mustang GT
Location: MO/ Born and raised in Louisiana
Posts: 10,024


Vortech V-1 T Trim SC (intercooled)
HP 292 cams
Teksid Forged Short Block 433 RWHP/390 RWTQ 3.33 pulley

New Project: MMR 900 Shortblock/ MHS Stage 1 heads/ CMS Stage 2 Blower Cams
Soldier GT is offline   Reply With Quote
Old 08-24-2012, 07:30 PM
Ford Mustang

Paid Advertisement


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 05:45 PM.

© Internet Brands, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup