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

STFT, LTFT, VE Tuning and logging

Thread Tools
 
Search this Thread
 
Old 09-11-2006, 03:36 PM
  #11  
Hello Dave
iTrader: (13)
 
dc_justin's Avatar
 
Join Date: Jul 2004
Location: San Diego, CA
Posts: 1,119
Likes: 0
Received 3 Likes on 3 Posts
Default

I already told you this specifically in another thread, but I thought I would tell it here to in case others haven't read that. With a 1 bar map sensor and forced induction, do NOT disable the MAF sensor and go into boost, very bad things will likely happen.
Old 09-11-2006, 05:48 PM
  #12  
TECH Addict
 
Yelo's Avatar
 
Join Date: Feb 2003
Location: Geneseo, NY
Posts: 2,864
Likes: 0
Received 1 Like on 1 Post
Default

Linda, you can "cheat" and use the STFT's to get pretty close....only use 1/2 the value as they ST's tend to overshoot a little to "make up" for AF error....

I've never tuned an FI vehicle.....it's imagine it's almiost the same but you HAVE to have a 2/3bar MAP sensor and 2/3bar OS or THIS WILL NOT WORK....you WILL break something otherwise because as soon as you run into boost the engine has NO IDEA what is happening....
Old 09-11-2006, 06:06 PM
  #13  
Moderately Differentiated
iTrader: (4)
 
dewmanshu's Avatar
 
Join Date: Nov 2004
Location: Maryland
Posts: 27,563
Received 3 Likes on 3 Posts
Default

The catch here for you is, your weight. We all are heavy as it is, but what are you at, 6100lbs? The heavier you are the quicker you are gonna into boost. more load. Just makes for ve tuning in 1bar a little more nerve racking, especially with a blower.

I just want to make sure it is very clear...NO BOOST without a MAF in a 1bar setup. Your pcm doesn't read past 105kpa. Fueling (airflow measurement) is guessing at best and always not enough. (2 really smart guys have already pointed out the obvious)

But if I am reading your threads right you are in the works of 2 bar, so hold off until you get the 2bar install. No reason to learn all over again.
Old 09-11-2006, 06:27 PM
  #14  
High on diesel fumes
iTrader: (70)
 
thunder550's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 12,658
Likes: 0
Received 3 Likes on 3 Posts
Default

Your best bet would be to get a wideband and a 2-bar MAP sensor. Then you can load an EFILive 2-bar custom o/s and start doing AutoVE tuning. It is very simple, and you don't have to worry about messing with the MAF sensor or LTFT's or STFT's, just a straight comparison between commanded AFR and actual AFR. EFILive has a couple of tutorials that are very good on their site for setting up the 2-bar MAP sensor and loading in the custom o/s. I had no idea what I was doing when I did mine, just followed the directions, and it worked like a charm. Very simple and straightforward.
Old 09-11-2006, 06:30 PM
  #15  
TECH Addict
Thread Starter
iTrader: (4)
 
Whippled 496's Avatar
 
Join Date: Jan 2006
Location: Lake Shore, MD
Posts: 2,143
Likes: 0
Received 1 Like on 1 Post
Default

thanks for lookin after me guys, i will wait till the 2 bar MAP and the wideband comes in before i get into anything major.
Old 09-11-2006, 06:33 PM
  #16  
High on diesel fumes
iTrader: (70)
 
thunder550's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 12,658
Likes: 0
Received 3 Likes on 3 Posts
Default

It sucks to be patient doesn't it! I've been waiting for someone to get me new headers and ORY for about a month so I can finish my tune up and it's driving me nuts!
Old 09-11-2006, 07:05 PM
  #17  
TECH Addict
Thread Starter
iTrader: (4)
 
Whippled 496's Avatar
 
Join Date: Jan 2006
Location: Lake Shore, MD
Posts: 2,143
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by thunder550
It sucks to be patient doesn't it! I've been waiting for someone to get me new headers and ORY for about a month so I can finish my tune up and it's driving me nuts!
no doubt! I want to dive into this sucker head first and start throwing numbers and stuff around now...LOL. I have this sponge like problem where i need to soak up every bit of info about something that i can. If i had it my way, there would be about 17 other new threads in this section that all started with, "how do i..........."

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GXPJAY
Trucks and SUV Classifieds
5
02-13-2022 08:15 AM
pittman
Drag Racing
37
01-19-2016 07:06 AM
GMCtrk
Tuning, Diagnostics, Electronics, and Wiring
38
08-09-2015 08:50 PM
GMCtrk
FORCED INDUCTION
67
07-17-2015 06:39 PM



Quick Reply: STFT, LTFT, VE Tuning and logging



All times are GMT -5. The time now is 01:36 PM.