PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

What causes a change in AFR command

Thread Tools
 
Search this Thread
 
Old 01-18-2019, 10:03 AM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (1)
 
shtnfrds's Avatar
 
Join Date: Aug 2008
Posts: 726
Likes: 0
Received 0 Likes on 0 Posts

Default What causes a change in AFR command

I ran a short data log the other night and noticed that afr command changed for some reason. I looked around the tune a good bit but I'm not educated enough to really figure out why. PE delay is set for 5500 and i was well below that. Stock tune with exception of the rear o2's and AIR being tuned out.
Whats causing the change?
Log attached
Attached Files
File Type: hpl
on ramp.hpl (12.4 KB, 21 views)

Last edited by shtnfrds; 01-18-2019 at 10:17 AM.
Old 01-18-2019, 10:11 AM
  #2  
Restricted User
 
JoeNova's Avatar
 
Join Date: Mar 2014
Location: Ohio
Posts: 7,194
Received 104 Likes on 87 Posts
Default

PE delay is just that, a delay. Its not an enable/disable. You'll still go into PE, it will just be a transition and not an on/off switch below that RPM.
If you have a car operating system from an F-body or Corvette, that value does nothing. You can change it all you want, but its hard-coded as "0" into the OS, so there is no delay.
Old 01-18-2019, 10:30 AM
  #3  
TECH Enthusiast
Thread Starter
iTrader: (1)
 
shtnfrds's Avatar
 
Join Date: Aug 2008
Posts: 726
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by JoeNova
PE delay is just that, a delay. Its not an enable/disable. You'll still go into PE, it will just be a transition and not an on/off switch below that RPM.
If you have a car operating system from an F-body or Corvette, that value does nothing. You can change it all you want, but its hard-coded as "0" into the OS, so there is no delay.
Ok, that makes sense. So what is my "on/off" switch?
Did my TPS percentage put me into PE mode here?

I added my tune BTW, I thought i had uploaded it before.
Old 01-18-2019, 02:47 PM
  #4  
Teching In
 
llafro's Avatar
 
Join Date: Feb 2006
Location: Glendale, CA
Posts: 39
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by shtnfrds
Ok, that makes sense. So what is my "on/off" switch?
Did my TPS percentage put me into PE mode here?

I added my tune BTW, I thought i had uploaded it before.
PE mode can be enabled by throttle position, MAP, and/or commanded torque percentage (at least on my 04 GTO).




All times are GMT -5. The time now is 04:15 AM.