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

Problem with Brenspeed tunes

  • Thread starter Thread starter PUNISHER RACING
  • Start date Start date Apr 22, 2009

PUNISHER RACING

Active Member
Aug 27, 2007
1,124
0
36
FORD CITY, PA.
Apr 22, 2009
#1
  • Apr 22, 2009
  • #1
I just installed my JLT/ X cal3 combo from Brennspeed. I got it loaded with 87,93,93+ race gas tunes. The problem I am having is with the 91 and 93 tunes. After uploading either of the tunes the check engine light comes on after 5 sec. of run time and in 3rd in 4th gears from 5000 to 6500 it jerks real bad and pops through the intake. The code it throws is for the o2 heaters. Anyone have trouble like this they dont seem to be of any nor want to help. Thanks in advance!
And yes the car has a full tank of Sunoco 93 in it.
 

SpartaPerformance

10 Year Member
Nov 5, 2006
2,517
61
89
Long Island NY
Apr 22, 2009
#2
  • Apr 22, 2009
  • #2
That's odd, I don't have any experience with them but from what I've seen on here they're pretty good with customer service. Anyway what was the code, 02 heaters doesn't really say much.
 

PUNISHER RACING

Active Member
Aug 27, 2007
1,124
0
36
FORD CITY, PA.
Apr 22, 2009
#3
  • Apr 22, 2009
  • #3
with both 93 tunes it throws codes: P0155, and P0161 o2 heater. Also I rechecked all the clamps and am sure I am not getting any unmetered air.
 
S

St Francisco

New Member
Jan 16, 2009
45
0
0
Lafayette, LA
Apr 22, 2009
#4
  • Apr 22, 2009
  • #4
Try reloading the tune...like install the same tune over itself. I have this weird problem with my Bamachips tunes sometimes where I get a loud popping when I rev the motor after a tune switch, but when I reload the tune it goes away.
 

PUNISHER RACING

Active Member
Aug 27, 2007
1,124
0
36
FORD CITY, PA.
Apr 23, 2009
#5
  • Apr 23, 2009
  • #5
got ahold of brennspeed again today talked to dave (great guy to talk to). returned car back to stock, airbox and all and no problems at all. i am just sending the tuner back to them they think files are corrupted in it. so far so good!
 
You must log in or register to reply here.

Similar threads

Tuners come on inside
  • squeak93
  • Feb 13, 2026
  • SVT Tech Forum
Replies
1
Views
261
SVT Tech Forum Feb 20, 2026
squeak93
G
2006 Mustang GT o2 Sensor Wiring Issue Car Bogging/Choking
  • GCantero93
  • Sep 5, 2025
  • 2005 - 2009 Specific Tech
Replies
4
Views
1K
2005 - 2009 Specific Tech Sep 6, 2025
Noobz347
A
Engine Turbo 5.0 Mustang bad misfire at WOT
  • AwxyMoron
  • Apr 3, 2021
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
51
Views
9K
Fox 5.0 Mustang Tech May 5, 2021
a91what
M
High RPM Stumble
  • mattmm04
  • Jun 1, 2019
  • SN95 4.6L Mustang Tech
Replies
7
Views
3K
SN95 4.6L Mustang Tech Jun 12, 2019
mattmm04
M
J
2008 Gt- Advice on "pinging sound" while accelerating
  • Joshm24
  • Sep 27, 2018
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
2
Views
2K
2005 - 2014 S-197 Mustang -General/Talk- Oct 2, 2018
Joshm24
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?