Ls1 edit tune basics
Thread Starter
Instructor
Joined: Jan 2009
Posts: 237
Likes: 2
Ls1 edit tune basics
What are the standard items that are typically tuned on a 02 C5 zo6 with headers,160 stat, and removed airpump. Just looking to get me by untill I get a pro dyno tune this summer.
What fan temps?
Any adjustments to keep it from going rich from the headers?
thanks
I'm new to the LS6 vettes (former TA owner)
What fan temps?
Any adjustments to keep it from going rich from the headers?
thanks
I'm new to the LS6 vettes (former TA owner)
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
The ECM should be able to make minor adjustments to the P/T fueling via the LTFT's--check those--make sure that they don't go positive JUST before going to WOT or the ECM will add that % to your WOT fuel and make it richer yet Try to get all your LTFT's 0 or slightly negative--You can get a guesstimate idea of your WOT AFR with your stock narrowband 02's before you get it tuned---They should be approx .900 millivolts (about 12.8)---higher is richer--
You will need to disable some of the diagnostic enablers so you don't get a check engine light with your AIR delete--You may get some rear 02 codes as well with headers
Long term with headers because your 02 sensor bungs are now further back than they were stock--you may have to adjust your 02'switching point table ( and a few other things) to correct their reading inaccurately--Must be done with a wideband--
You will need to disable some of the diagnostic enablers so you don't get a check engine light with your AIR delete--You may get some rear 02 codes as well with headers
Long term with headers because your 02 sensor bungs are now further back than they were stock--you may have to adjust your 02'switching point table ( and a few other things) to correct their reading inaccurately--Must be done with a wideband--
Former Vendor
Joined: Feb 2007
Posts: 2,572
Likes: 1
From: Austin Texas
If you are getting a pro tune, I would not put a whole lot of time into it. How are you making changes and logging data? The fan temps are a big plus. You can adjust the fueling if you are running rich. There will be a few DTC's that need tweaked if you removed the air pump or cats.
Thread Starter
Instructor
Joined: Jan 2009
Posts: 237
Likes: 2
I made adjustments to the fans. Do you guys adjust both sets? I mean the AC pressure fan settings? I matched all four. On 190 Off 180. I'm assuming that means the fan temps for when the AC in on.
Also I just toggled any AIR and Bank 2 headings I found.
For Torque Management if you uncheck the box does that disable it?
Or must the values in the tables be raised or lowered? I did both to be safe.
Also I just toggled any AIR and Bank 2 headings I found.
For Torque Management if you uncheck the box does that disable it?
Or must the values in the tables be raised or lowered? I did both to be safe.
