Maft-switch settings
Thread Starter
TECH Apprentice
Joined: Nov 2001
Posts: 324
Likes: 0
From: Fort Worth
Maft-switch settings I have the new MAFT.What are the the dip switch settings should I use? I have a stock ported MAF.Thanks (99 TA)
<small>[ March 25, 2002, 08:50 PM: Message edited by: TexassTA ]</small>
<small>[ March 25, 2002, 08:50 PM: Message edited by: TexassTA ]</small>
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
Re: Maft-switch settings Well you really can't tell how the car is performing AFR wise unless you have A-tap or dyno with and get AFR readings... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
After that its pretty easy to make ballpark adjustments...
After that its pretty easy to make ballpark adjustments...
TECH Resident
Joined: Jan 2002
Posts: 754
Likes: 0
From: USA
Re: Maft-switch settings If your MAFT version is LESS then 5.2,
then ALL 4 switches are set to OFF.
If your MAFT version is 5.2 then ONLY switch 4 could be turned on IF your using a 85mm or larger MAF.
IMHO, if you do not want to chase your tail, start out with WOT rotary switch to ZERO (which is bypass) and only work with the BASE rotary switch until your LTFT is around zero, then fine tune with WOT setting.
If you attempt to start with setting both, AFR will move around tto much and you'll be making change after change, taking longer to do the dial in process.
After making a MAFT change, get about 1 hour engine run time so that PCM meets the timeframe to re-average LONG TERM Fuel Trims before deciding if further tuning is needed.
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TexassTA:
<strong>I was referring to the 4 on and off switches,not the base and wot settings. Anyone know? Thanks</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
then ALL 4 switches are set to OFF.
If your MAFT version is 5.2 then ONLY switch 4 could be turned on IF your using a 85mm or larger MAF.
IMHO, if you do not want to chase your tail, start out with WOT rotary switch to ZERO (which is bypass) and only work with the BASE rotary switch until your LTFT is around zero, then fine tune with WOT setting.
If you attempt to start with setting both, AFR will move around tto much and you'll be making change after change, taking longer to do the dial in process.
After making a MAFT change, get about 1 hour engine run time so that PCM meets the timeframe to re-average LONG TERM Fuel Trims before deciding if further tuning is needed.
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TexassTA:
<strong>I was referring to the 4 on and off switches,not the base and wot settings. Anyone know? Thanks</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
Staging Lane
Joined: Mar 2002
Posts: 57
Likes: 0
From: Boca Raton, Florida
Re: Maft-switch settings I have a '99 Z28 and with a stock MAF. I set the dipswitch number 3 to on to prevent setting codes per the instructions. Has been running fine for about six months.
