• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-

Tuning Help - 2003 Cobra

  • Thread starter Thread starter Happster
  • Start date Start date Aug 1, 2015
H

Happster

New Member
May 30, 2010
18
0
1
Dunstable, MA
Aug 1, 2015
#1
  • Aug 1, 2015
  • #1
OK, after 11 years, putting the final piece of the puzzle onto my '01 Cobra motor - the '03 Eaton supercharger. I could use some guidance about getting a good ECU that I can tune for my many mods.

I have 98 GT, but converted the drivetrain to an '01 Cobra via a crate motor right from Ford. (They were giving them away 12 years ago, once the '03 supercharged motors came along.) Yes, it was a nightmare, because I had to change every wiring harness in the car and the ECU, radio, seats, cluster, T45 tranny...oy. So much for plug and play - everything changed in '99. Thank god for Missouri Mustang is all I can say.

Anyway, I have some mods coming into this stock '03 Cobra Eaton upgrade. Forged crank, Manley H-beam rods, JT forged pistons (dished for lowered compression ratio), high volume fuel pump, Lincoln Navigator heads (for the bigger exhaust valves), long tube headers, Magnaflow 3" H-pipe and Cat back. The Eaton set up I bought is coming off a stock '03 Cobra, and includes everything I need, soup to nuts, except the ECU & MAF. I assume that the stock '03 ECU & MAF not be sufficient (or wise) for this set up and probably won't even plug into my '01 harness anyway. I want to maximize my ponies. So I could use some guidance on the best set up to get this thing tuned. Any help out there? I know they have programmable ECUs, chips, etc. but I could use some guidance. Thanks.
 
D

Deleted member 38176

Aug 2, 2015
#2
  • Aug 2, 2015
  • #2
You current ECU is perfectly fine. Im using my stock ECU and even the wiring harness from my 02 GT to power my 04 Cobra motor.

What MAF are you currently running?
 
You must log in or register to reply here.

Similar threads

S
Fox '87 GT can't get to stay running
  • spilly
  • Mar 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
27
Views
973
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 20, 2026
spilly
S
0
V6 to V8 Swap info
  • 02_2v_Curtis
  • Jan 11, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
828
1996 - 2004 SN95 Mustang -General/Talk- Jan 11, 2026
02_2v_Curtis
0
C
Please help 01 cobra swapped gt
  • Calabaza117
  • Dec 2, 2024
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
18
Views
1K
1996 - 2004 SN95 Mustang -General/Talk- Mar 16, 2026
Moelutenet
M
Tuning help! - HEGO 2 @ 64 volts!!!
  • VenomousISA
  • Feb 20, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
4
Views
305
1996 - 2004 SN95 Mustang -General/Talk- Feb 26, 2025
VenomousISA
5
Hello Everyone !
  • 5150K
  • Jul 3, 2026
  • The Welcome Wagon
Replies
0
Views
126
The Welcome Wagon Jul 3, 2026
5150K
5
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?