• Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2009 Specific Tech

Running Rich After CMDP Install?!

  • Thread starter Thread starter kkdoughboy
  • Start date Start date Sep 7, 2007
K

kkdoughboy

New Member
Jul 20, 2007
212
0
0
Pennsylvania
Sep 7, 2007
#1
  • Sep 7, 2007
  • #1
Hi everyone, I recently installed Steeda CMDP's on my 07 GT 5spd. I have a custom tune from Brent at Brenspeed. After the CMDP installation I'm noticing a very distinct fuel smell from the exhaust. It is much more evident than it was before the install. I asked Brent and he said that the new tune for the CMCV removal had exactly the same parameters as before. Basically the new tune was the same. So why is the car running slower and producing this odor. Is the car running rich? Unfortunately I dont have a A/F monitor yet. Can installing these plates affect the A/F? Any ideas fellas? Thanks, Chris
 
A

anticubicle

New Member
Jul 30, 2007
268
0
0
Sep 7, 2007
#2
  • Sep 7, 2007
  • #2
See if you can get to a dyno nearby, do a few test runs. See if they'll let you hang around the dyno and monitor your A/F, then if you're indeed running rich, The XCal2 has an easy option to lean (or richen) the fuel base. Hopefully they'll let you install a tune quick and re-dyno.

(The joys of working down the block from DiabloSport's Test Facility)
 

SpartaPerformance

10 Year Member
Nov 5, 2006
2,517
61
89
Long Island NY
Sep 7, 2007
#3
  • Sep 7, 2007
  • #3
I don't see why it would run rich you're adding more air, you should be running lean if the tune is the same. I agree go to a Dyno and play with it there.
 
You must log in or register to reply here.

Similar threads

0
01 running rich
  • 01_GT
  • Oct 6, 2020
  • SN95 4.6L Mustang Tech
Replies
3
Views
1K
SN95 4.6L Mustang Tech Nov 21, 2020
McFly2
14point7 Spartan 2 install, Holley 4150 tuning, & exhaustcapades
  • LILCBRA
  • Apr 22, 2020
  • 1974 - 1978 Mustang II Talk & Tech
  • 6 7 8
Replies
143
Views
18K
1974 - 1978 Mustang II Talk & Tech Dec 12, 2023
2Blue2
1
Electrical 1992 5.0 Running rich with surging idle (surge checklist has been done)
  • 1fstpnycb
  • Oct 3, 2018
  • Fox 5.0 Mustang Tech
Replies
8
Views
6K
Fox 5.0 Mustang Tech Oct 9, 2018
General karthief
R
Engine 1992 Mustang Hesitation/Cutting-Out
  • RTW0223
  • May 2, 2018
  • Fox 5.0 Mustang Tech
  • 2
Replies
21
Views
14K
Fox 5.0 Mustang Tech May 26, 2025
Noobz347
J
5.0 Ho Swapped Comet Lean Backfire Issue
  • jas280z
  • Aug 18, 2017
  • Fox 5.0 Mustang Tech
  • 2
Replies
22
Views
8K
Fox 5.0 Mustang Tech Aug 21, 2017
jas280z
J
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2009 Specific Tech
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?