• Mustang Forums
  • Digital Self-tuning Forum

351w swap need help will not idle

  • Thread starter Thread starter mustangpauly
  • Start date Start date Sep 17, 2020

mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
Sep 17, 2020
#1
  • Sep 17, 2020
  • #1
i need!!!!! Help my 302 tune is not work im just lost.
 

Attachments

  • 351w startup tune.msq
    351w startup tune.msq
    119.7 KB · Views: 136
  • 351w startup1.mlg
    351w startup1.mlg
    1.7 MB · Views: 136

a91what

SendMeUrDataLog
10 Year Member
Apr 6, 2011
10,739
6,720
214
Hillsborough county
Sep 18, 2020
#2
  • Sep 18, 2020
  • #2
Can you please tell me more about the build and what kind of problems you are having. The more specific the better
 

mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
Sep 18, 2020
#3
  • Sep 18, 2020
  • #3
351w stock short block with gt40p heads and f303 cam, 70mm tb. speed master intake, 19 lb. injector and a 255 fuel pump.it will not idle on its own and when warm it hunts. im trying to get some run time on the new motor before i put the turbo kit on.
 

mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
Sep 18, 2020
#4
  • Sep 18, 2020
  • #4
i had it run with the stock computer but it was running lean. i know i need bigger injectors, i was hoping with megasquirt to make it work im not looking for WOT
 

marcelo

Active Member
Feb 25, 2018
215
48
38
Quepos, Costa Rica, Central America
Sep 20, 2020
#5
  • Sep 20, 2020
  • #5
Data log shows that your TPS is at 2.9% at idle ..should be at 0 when idle ...
 

mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
Sep 20, 2020
#6
  • Sep 20, 2020
  • #6
marcelo said:
Data log shows that your TPS is at 2.9% at idle ..should be at 0 when idle ...
Click to expand...
That me making it idle
 

a91what

SendMeUrDataLog
10 Year Member
Apr 6, 2011
10,739
6,720
214
Hillsborough county
Sep 22, 2020
#7
  • Sep 22, 2020
  • #7
The f cam is not very aggressive, I have not had time to look the tune over yet but it should idle relatively steady with the timing locked at 15* and the idle valve in a set position.
 

mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
Sep 22, 2020
#8
  • Sep 22, 2020
  • #8
a91what said:
The f cam is not very aggressive, I have not had time to look the tune over yet but it should idle relatively steady with the timing locked at 15* and the idle valve in a set position.
Click to expand...
 

mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
Sep 22, 2020
#9
  • Sep 22, 2020
  • #9
I got it to idle,throttle was not set right
 
You must log in or register to reply here.

Similar threads

M
93 5.0 Microsquirt with Stage 3 trickflow tuning issues
  • marxpreston11
  • Jun 22, 2026
  • Digital Self-tuning Forum
  • 2 3 4
Replies
67
Views
814
Digital Self-tuning Forum Jun 25, 2026
Mustang5L5
Tunerstudio help / services
  • Kabuki_notch
  • Apr 26, 2026
  • Digital Self-tuning Forum
Replies
2
Views
253
Digital Self-tuning Forum May 2, 2026
Mustang5L5
K
351w engine swap
  • Killer351w
  • Jan 21, 2026
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
0
Views
206
2005 - 2014 S-197 Mustang -General/Talk- Jan 21, 2026
Killer351w
K
O
WTB Looking for an SCT X4 tuner for my 2005
  • optionizerSS
  • Jun 8, 2026
  • Want to Buy
Replies
0
Views
52
Want to Buy Jun 8, 2026
optionizerSS
O
G
Idle surging after warm up
  • GALLY3309
  • Jun 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
98
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 10, 2026
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • Digital Self-tuning Forum
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?