Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors?
09-18-2002, 01:49 PM
#1
Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? Neither, your LTRIMS look good. Change PE vs RPM. Between your rev limiter problem and your A/F, I am starting to wonder.
<small>[ September 18, 2002, 01:49 PM: Message edited by: Nic00Z28M6 ]</small>
<small>[ September 18, 2002, 01:49 PM: Message edited by: Nic00Z28M6 ]</small>
09-18-2002, 04:07 PM
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Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Nic00Z28M6:
<strong>Neither, your LTRIMS look good. Change PE vs RPM. Between your rev limiter problem and your A/F, I am starting to wonder.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">No way!! My Ltrims have gone south since the last time you were in my car....I'm running +15% at times <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
<strong>Neither, your LTRIMS look good. Change PE vs RPM. Between your rev limiter problem and your A/F, I am starting to wonder.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">No way!! My Ltrims have gone south since the last time you were in my car....I'm running +15% at times <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
09-18-2002, 04:14 PM
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Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? MAF first, then PE vs RPM. Don't screw with your injector table unless you've changed injectors.
09-18-2002, 04:21 PM
#4
Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? Half dozen in one, 6 in the other.
It really doesn't matter where you make the adjustment. To keep things simple, it is recommended that all corrections to the a/f ratio be done with MAF tables if you are only making slight corrections.
It is my opinion, though, that if you are going to make large changes to the PCM to correct for poor Lterms or a/f, then those changes should be made to the Injector Table or split between the two. Reason being, large changes to the MAF transfer function table can cause the PCM to reference air flows incorrectly and result in timing problems among other things.
The PE table should only be fooked with on a dyno. IMHO.
It really doesn't matter where you make the adjustment. To keep things simple, it is recommended that all corrections to the a/f ratio be done with MAF tables if you are only making slight corrections.
It is my opinion, though, that if you are going to make large changes to the PCM to correct for poor Lterms or a/f, then those changes should be made to the Injector Table or split between the two. Reason being, large changes to the MAF transfer function table can cause the PCM to reference air flows incorrectly and result in timing problems among other things.
The PE table should only be fooked with on a dyno. IMHO.
09-18-2002, 05:40 PM
#5
Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by verbs:
<strong>No way!! My Ltrims have gone south since the last time you were in my car....I'm running +15% at times <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Say what? WTF did you do!?
<small>[ September 18, 2002, 05:40 PM: Message edited by: Nic00Z28M6 ]</small>
<strong>No way!! My Ltrims have gone south since the last time you were in my car....I'm running +15% at times <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Say what? WTF did you do!?
<small>[ September 18, 2002, 05:40 PM: Message edited by: Nic00Z28M6 ]</small>
09-18-2002, 06:17 PM
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Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Nic00Z28M6:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by verbs:
<strong>No way!! My Ltrims have gone south since the last time you were in my car....I'm running +15% at times <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Say what? WTF did you do!?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Nothing!!! the car has been leaning out on its own as time has gone by for some odd reason....
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by verbs:
<strong>No way!! My Ltrims have gone south since the last time you were in my car....I'm running +15% at times <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Say what? WTF did you do!?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Nothing!!! the car has been leaning out on its own as time has gone by for some odd reason....
09-18-2002, 10:24 PM
#7
Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Nothing!!! the car has been leaning out on its own as time has gone by for some odd reason....</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'd be careful here....this sounds like a vacuum leak in the making!!!
I'd also tweak the injectors first but I would determine if you have a vacuum leak before I did anything!
I'd also tweak the injectors first but I would determine if you have a vacuum leak before I did anything!
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09-19-2002, 12:47 AM
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Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? I've got some tuning to take care of next saturday with my a/f ratio. What is the best way to adjust my a/f ratio. Using the injectors or MAF?
09-19-2002, 03:23 PM
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Re: Using LS1 edit to richen/lean out the car is it better to scale the MAF or injectors? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by John B:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Nothing!!! the car has been leaning out on its own as time has gone by for some odd reason....</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'd be careful here....this sounds like a vacuum leak in the making!!!
I'd also tweak the injectors first but I would determine if you have a vacuum leak before I did anything!</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">thanks john...I'll look into that
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Nothing!!! the car has been leaning out on its own as time has gone by for some odd reason....</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'd be careful here....this sounds like a vacuum leak in the making!!!
I'd also tweak the injectors first but I would determine if you have a vacuum leak before I did anything!</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">thanks john...I'll look into that
