DIY PROM Do It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.

VE table question - Acceleration vs cruising

Thread Tools
 
Search this Thread
 
Old 09-15-2015, 09:29 PM
  #1  
Supreme Member

Thread Starter
 
ULTM8Z's Avatar
 
Join Date: Jan 2003
Posts: 4,035
Received 193 Likes on 167 Posts
VE table question - Acceleration vs cruising

So having had to start from scratch after ironing out my system voltages (https://www.thirdgen.org/forums/diy-...make-sure.html)....

I'm noticing something peculiar...

When I accelerate through the RPM range of ~2000 to 3500 rpm, I have the VE tables set where it feels very strong by seat-of-the-pants feel. Integrator seems like I have the right values set (w/o entering into PE mode).

However, when I'm cruising at high load up a hill and hitting those same high MAP values, the BLMs drop down to ~112-114.

I'd like to have it balanced properly, but if I tune for high-load cruising and lean out the high-MAP cells in the VE table, the acceleration suffers. Truth be told, we're talking about pretty minor variations, but just noticeable enough for me to want to fix it.

Is there something else I should I be looking at for the fueling during the transient passes through those RPM and MAP cells? Such that I maintain 128 BLM at cruise, but still get the right fueling during acceleration?

My AE delta MAP seems to be already set correctly based on feel, plus the AE duration doesn't last long enough to do what the VE tables are doing (at least in my not-completely-knowledgable estimation).
Old 09-16-2015, 09:15 AM
  #2  
Moderator

iTrader: (1)
 
RBob's Avatar
 
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 18,401
Likes: 0
Received 215 Likes on 201 Posts
Car: check
Engine: check
Transmission: check
Re: VE table question - Acceleration vs cruising

Most likely the VE is high is that area and is acting like AE when accelerating. Maybe reduce the VE enough to get about 118 - 120 on the BLM in steady state then see how it is on accel.

RBob.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fasteddi
Power Adders
30
09-02-2015 10:29 AM
perZ
TPI
3
08-21-2015 05:51 PM
ezobens
DIY PROM
8
08-19-2015 10:29 PM
redmaroz
LTX and LSX
7
08-16-2015 11:40 PM
perZ
TPI
7
08-15-2015 01:17 PM



Quick Reply: VE table question - Acceleration vs cruising



All times are GMT -5. The time now is 07:34 PM.