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

PCM keeps reverting to low octane table

Thread Tools
 
Search this Thread
 
Old 01-22-2007, 04:55 PM
  #1  
10 Second Club
Thread Starter
iTrader: (19)
 
WS6HUMMER's Avatar
 
Join Date: Feb 2004
Location: Alexandria La.
Posts: 2,542
Likes: 0
Received 2 Likes on 2 Posts

Default PCM keeps reverting to low octane table

I dont know why but my car keeps commanding timing from the low octane table. I never had any major problem with knock retard but occaisionally got some so I addressed it as burst knock and doubled the decay rate and halved the attack IAT and Baro tables. Just cant see what's making this thing keep reverting to the low octane table. Can anyone give me a suggestion where to look?

Note: when I got the car it had TR6 plugs so I suspect the car might have been sprayed before, could it be that someone did a IAT sensor trick to pull timing and I cant see it on the PID's I'm scanning?
Old 01-22-2007, 05:23 PM
  #2  
TECH Senior Member
iTrader: (25)
 
2xLS1's Avatar
 
Join Date: Nov 2001
Location: Warr Acres, OK
Posts: 5,649
Likes: 0
Received 8 Likes on 8 Posts

Default

Log Knock Learn Factor and see what it is.
Old 01-22-2007, 05:36 PM
  #3  
10 Second Club
Thread Starter
iTrader: (19)
 
WS6HUMMER's Avatar
 
Join Date: Feb 2004
Location: Alexandria La.
Posts: 2,542
Likes: 0
Received 2 Likes on 2 Posts

Default

Originally Posted by 2xLS1
Log Knock Learn Factor and see what it is.
I'll check this out, thanks!
Old 06-07-2007, 02:07 PM
  #4  
9 Second Club
iTrader: (33)
 
ramairws6's Avatar
 
Join Date: Sep 2004
Location: Hicksville MN!
Posts: 1,990
Likes: 0
Received 83 Likes on 59 Posts

Default

What should this knock learn factor be at?Can you set it in any way?Traver
Old 06-10-2007, 08:38 PM
  #5  
10 Second Club
Thread Starter
iTrader: (19)
 
WS6HUMMER's Avatar
 
Join Date: Feb 2004
Location: Alexandria La.
Posts: 2,542
Likes: 0
Received 2 Likes on 2 Posts

Default

Originally Posted by ramairws6
What should this knock learn factor be at?Can you set it in any way?Traver
Are you using HPT, are you logging the knock learn PID?

It should be 1.00, if its not you wont get all the timing.
Old 06-14-2007, 11:43 PM
  #6  
TECH Regular
iTrader: (13)
 
98catfish's Avatar
 
Join Date: Nov 2006
Posts: 416
Likes: 0
Received 0 Likes on 0 Posts

Default

If your not getting KR then just copy and paste high to low octane tables
Old 06-14-2007, 11:53 PM
  #7  
10 Second Club
iTrader: (14)
 
RooRnZ28's Avatar
 
Join Date: Dec 2005
Location: Central California
Posts: 1,392
Likes: 0
Received 0 Likes on 0 Posts

Default

ws6 hummer, are those wheels pro stars? they look badass!
Old 06-15-2007, 07:48 AM
  #8  
10 Second Club
Thread Starter
iTrader: (19)
 
WS6HUMMER's Avatar
 
Join Date: Feb 2004
Location: Alexandria La.
Posts: 2,542
Likes: 0
Received 2 Likes on 2 Posts

Default

Originally Posted by RooRnZ28
ws6 hummer, are those wheels pro stars? they look badass!
Yes they are, took many hours of caliper grinding!
Thanks




All times are GMT -5. The time now is 02:03 AM.