Tuning, Diagnostics, Electronics, and Wiring HP Tuners | EFILive | Hand Held Programmers | Stand Alone PCM's | Electronics | Wiring Diagrams

injector help

Old Feb 10, 2008 | 01:25 AM
  #1  
TURBHOE's Avatar
Thread Starter
12 Second Truck Club
iTrader: (4)
 
Joined: Nov 2004
Posts: 6,318
Likes: 2
From: Jacksonville FL.
Default injector help

well, i got my injectors in. i adjusted the ifr table. it runs like crap. sounds like it has a cam in it and dies when you come to a stop. the stft's on the log are in the 50's. the narrow band log shows 20mv's. i'm going to put in the wideband tommorrow. what else do i need to adjust? when i put the 42's in the silverado i scaled the ifr table and it ran like a champ but these suck. lol so what should i do? here is the link to hpt where you can find a copy of the log and the tune. http://hptuners.com/forum/showthread.php?t=16449
Reply
Old Feb 11, 2008 | 04:30 PM
  #2  
TURBHOE's Avatar
Thread Starter
12 Second Truck Club
iTrader: (4)
 
Joined: Nov 2004
Posts: 6,318
Likes: 2
From: Jacksonville FL.
Default

no body has a clue?
Reply
Old Feb 11, 2008 | 05:36 PM
  #3  
Truckshop's Avatar
TECH Fanatic
iTrader: (17)
 
Joined: Jul 2007
Posts: 1,139
Likes: 0
From: Prairieville,La
Default

i would scale them down until it quit adding fuel. then see what happens.
Reply
Old Feb 11, 2008 | 05:50 PM
  #4  
KySilverado's Avatar
TECH Senior Member
iTrader: (7)
 
Joined: Jun 2004
Posts: 5,446
Likes: 7
From: Central Kentucky
Default

IFR Table
Offset table
short pulse adder
min injector pulse.

This is one of those threads you are afraid to post to because you know what the next questions are going to be and you don't know the answers.
Reply
Old Feb 11, 2008 | 06:04 PM
  #5  
kbracing96's Avatar
TECH Senior Member
iTrader: (26)
 
Joined: Jul 2004
Posts: 9,485
Likes: 31
From: Oakland, OR
Default

I don't know what I could tell ya that hasn't already been said in HPT's forum. Apparently, they don't flow what you think they should. All you can to is scale back the IFR table till your trims are back in line and thats what you have.
Reply
Old Feb 14, 2008 | 07:31 AM
  #6  
mcfarlnd's Avatar
Un-Registered User
iTrader: (15)
 
Joined: Nov 2006
Posts: 1,318
Likes: 10
From: DFW
Default

Originally Posted by KySilverado
IFR Table
Offset table
short pulse adder
min injector pulse.

This is one of those threads you are afraid to post to because you know what the next questions are going to be and you don't know the answers.
lol
Reply
Old Feb 14, 2008 | 09:01 AM
  #7  
TURBHOE's Avatar
Thread Starter
12 Second Truck Club
iTrader: (4)
 
Joined: Nov 2004
Posts: 6,318
Likes: 2
From: Jacksonville FL.
Default

well i tried to scale down the ifr table but it makes my above idle driving and my wot very rich. like 9:1afr at wot. i think they do flow what they are rated just that they are really slllooowww. i uped the min PW and now it nice and rich at idle. i just need to find the happy medium. i have the min PW at 1.9 and the offset from 13-15vdc to almost 1. and short Pulse adder is at 1.9. i guess i just make a small adjustment and start it. then do it over and over and over until its right. i tried ajusting the injector timing but i don't think it helped any. but at wot with the ifr table "correct" as per the rated fuel flow i get 11.5-12:1 afr. when it gave my 9afr the injectors were only at like 45%duty cycle. where my stockers were in the 80's at wot with 12:1 afr any ideas let me know.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
$A_Money$81
FORCED INDUCTION
24
Mar 27, 2023 10:25 AM
shootermwc
GM Parts Classifieds
2
Oct 8, 2015 01:45 PM
KleanKustoms
FORCED INDUCTION
1
Sep 30, 2015 05:07 PM
Wrecker 426
GM Parts Classifieds
0
Sep 29, 2015 11:00 PM
sTNT971
FORCED INDUCTION
6
Sep 26, 2015 04:22 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 02:39 AM.