AFR goes to 11.5 but works it way back to 14.7 during WOT
#1
TECH Apprentice
Thread Starter
iTrader: (1)
Join Date: Jan 2007
Location: Maui
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
AFR goes to 11.5 but works it way back to 14.7 during WOT
I just got my truck tuned and when i go WOT the AFR goes to 11.5 as commanded, but then works it's way back to 14.7 while i'm still in boost. Shouldn't i stay at ~11.5 the entire time i'm in boost? why would by AFR start creeping back to stoich? it takes about 2-3 seconds for it to get back to 14.7.
do i need to adjust any tables?
thanks!
do i need to adjust any tables?
thanks!
#3
TECH Apprentice
Thread Starter
iTrader: (1)
Join Date: Jan 2007
Location: Maui
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
Fuel pressure stays constant, or it drops like 1-2 lbs. Injectors are the stock Radix, 42lbs and the fuel pump is also the stock radix, which i believe is the 255. Yes, the tune was done in person on a loaded dyno.
#5
TECH Apprentice
Thread Starter
iTrader: (1)
Join Date: Jan 2007
Location: Maui
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
Injectors are definitely maxed out. I have the scan file, at WOT Inj duty cycle is over 100, tops at 103.
i'm waiting for my tuner to get back to me. I was hoping someone could shed some light if they knew. Also, my previous tune held AFR at boost. So i'm thinking it's feedback from the LTFTs.. not sure though
i'm waiting for my tuner to get back to me. I was hoping someone could shed some light if they knew. Also, my previous tune held AFR at boost. So i'm thinking it's feedback from the LTFTs.. not sure though
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
atxlt
Tuning, Diagnostics, Electronics, and Wiring
1
07-20-2015 11:06 PM
lxcoupe
GM Drivetrain & Suspension
17
07-14-2015 10:14 PM