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
SVTPerformance's Chain of Restaurants
Tuning À la carte
fuel trims
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="guitar maestro" data-source="post: 10915697" data-attributes="member: 16284"><p>Yup an exhaust leak should cause a lean code because the O2 sensor only detects excess oxygen not fuel. If you insist on using the O2s as a guide to solve this issue, you can but you hhave to be absolutely sure that you have no exhaust leaks--otherwise it renders the closed-loop fueling all out of whack. A much better solution is to use a wideband O2 but again you need to be certain of no exhaust leaks.</p><p></p><p>Here's what I would do to get a better view of what's going on. Reset the car's pcm to clear to the fuel trims. Then datalog to see what the STFTs are doing before the LTFTs have a chance to move part of those corrections into the KAM. This will let you get a better view of the total and true amount of fueling correction by looking at solely the STFTs and not having to worry about the corrections stored in the LTFTs.</p></blockquote><p></p>
[QUOTE="guitar maestro, post: 10915697, member: 16284"] Yup an exhaust leak should cause a lean code because the O2 sensor only detects excess oxygen not fuel. If you insist on using the O2s as a guide to solve this issue, you can but you hhave to be absolutely sure that you have no exhaust leaks--otherwise it renders the closed-loop fueling all out of whack. A much better solution is to use a wideband O2 but again you need to be certain of no exhaust leaks. Here's what I would do to get a better view of what's going on. Reset the car's pcm to clear to the fuel trims. Then datalog to see what the STFTs are doing before the LTFTs have a chance to move part of those corrections into the KAM. This will let you get a better view of the total and true amount of fueling correction by looking at solely the STFTs and not having to worry about the corrections stored in the LTFTs. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
SVTPerformance's Chain of Restaurants
Tuning À la carte
fuel trims
Top