Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
SN95 Cobras
Troublesome Trouble Codes... P0171
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Blackwood" data-source="post: 6364231" data-attributes="member: 38390"><p>I don't know much about Mustangs, but Stampede3 asked me to take a look at this thread since I have a tuner for my Grand Prix and deal with a lot of the same tuning issues.</p><p></p><p>Did your friend go back to the dealer about the PCM flash? If the car had nitros and possible a SC, it's probably still tuned for those things which would really screw up the tune since they are no longer installed.</p><p></p><p>BTW, the foul out adapter trick is not just for ricers. There are a lot of Grand Prixs running the same setup. Either because they've removed the cat like you said or just because of a bigger downpipe or catback system. I'm told it works very well. It's not a problem in the engine, it's just that the exhaust gases are not as dense because of the extra space in the exhaust. The stock O2 sensor sees this as a lean condition.</p><p></p><p>With all the stuff you've changed, and since you haven't found any exhaust leaks (which is what I suspected to be the problem), I'm leaning toward a really bad tune or maybe even a faulty PCM. Have you checked the ground for the PCM?</p></blockquote><p></p>
[QUOTE="Blackwood, post: 6364231, member: 38390"] I don't know much about Mustangs, but Stampede3 asked me to take a look at this thread since I have a tuner for my Grand Prix and deal with a lot of the same tuning issues. Did your friend go back to the dealer about the PCM flash? If the car had nitros and possible a SC, it's probably still tuned for those things which would really screw up the tune since they are no longer installed. BTW, the foul out adapter trick is not just for ricers. There are a lot of Grand Prixs running the same setup. Either because they've removed the cat like you said or just because of a bigger downpipe or catback system. I'm told it works very well. It's not a problem in the engine, it's just that the exhaust gases are not as dense because of the extra space in the exhaust. The stock O2 sensor sees this as a lean condition. With all the stuff you've changed, and since you haven't found any exhaust leaks (which is what I suspected to be the problem), I'm leaning toward a really bad tune or maybe even a faulty PCM. Have you checked the ground for the PCM? [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
SN95 Cobras
Troublesome Trouble Codes... P0171
Top