MAFLESS VE Tuning
The comments from Chris about TPS/MAP prediction
are interesting; these don't show up as params in
HPTuners but seem reasonable and would be the
proper "pump shot" on opening throttle I expect. I
wonder if there are any "lead gain, lead offset" params
we will be seeing in the future.
are interesting; these don't show up as params in
HPTuners but seem reasonable and would be the
proper "pump shot" on opening throttle I expect. I
wonder if there are any "lead gain, lead offset" params
we will be seeing in the future.
FormerVendor
Joined: Jan 2003
Posts: 525
Likes: 0
From: Melbourne, Australia
Originally Posted by jimmyblue
The comments from Chris about TPS/MAP prediction
are interesting; these don't show up as params in
HPTuners but seem reasonable and would be the
proper "pump shot" on opening throttle I expect. I
wonder if there are any "lead gain, lead offset" params
we will be seeing in the future.
are interesting; these don't show up as params in
HPTuners but seem reasonable and would be the
proper "pump shot" on opening throttle I expect. I
wonder if there are any "lead gain, lead offset" params
we will be seeing in the future.
"Pump shot" is really an "Air shot" that has the desired effect on transient fuel. Its a large'ish filter coefficent table that includes MAF, VE, and predictive terms based on MAP and TPS. Sounds like fun eh, can't wait to write the description of that one in the help manual...
TECH Addict
Joined: Jul 2002
Posts: 2,261
Likes: 0
Originally Posted by gameover
once Ken and I stop arguing over the name yeah
"Pump shot" is really an "Air shot" that has the desired effect on transient fuel. Its a large'ish filter coefficent table that includes MAF, VE, and predictive terms based on MAP and TPS. Sounds like fun eh, can't wait to write the description of that one in the help manual...
"Pump shot" is really an "Air shot" that has the desired effect on transient fuel. Its a large'ish filter coefficent table that includes MAF, VE, and predictive terms based on MAP and TPS. Sounds like fun eh, can't wait to write the description of that one in the help manual...
joel 
TECH Fanatic
Joined: Mar 2003
Posts: 1,839
Likes: 0
From: La Porte, TX
Originally Posted by HumpinSS
No you dont place 1.13 in the Open loop F/a table. Set the pe to 0 or 1 to make sure the pcm chooses the riches mixture which will be in the open loop F/a table
Do I need to change ALL points in the open loop F/A vs Coolant Temp vs MAP table to 1.13? Also I do not have access to a WB02 yet, what kind of narrow band o2 milivolts are you seeing at 13.0 AFR? I know that it won't be exactly perfect, but I'm just looking for something to get me in the ballpark until the WBo2 gets here, then I can start the fine tuning.
Also currently I'm seeing an -2 ltft avg. with the MAF. Should I try using my current VE table or should I start from scratch with an OEM table? I'm mainly looking to cure the low RPM surging and bucking and the crappy idle characterics that come with having such a big cam. I'm also looking to be able to lower my idle RPM and improve gas milage.
