Set base timing with LS1 edit?
Thread Starter
TECH Apprentice
Joined: Aug 2002
Posts: 362
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From: Maple Grove MN
Set base timing with LS1 edit? Lets say I wanted to set my timing to 22 (stock is 28?), how would I go about doing this. Also where do you adjust your rev limiter? I thought I put mine at 6600 but it now cuts out at like 6000.
Thanks, Justin
Thanks, Justin
Thread Starter
TECH Apprentice
Joined: Aug 2002
Posts: 362
Likes: 0
From: Maple Grove MN
Re: Set base timing with LS1 edit? When looking at that table I was a little worried about changing figures I dont understand.
"reducing timing in the .56 g/cyl 3600 rpm and up 6 deg" What does this .56 g/cyl mean? So whatever number is in the 3600 box I should just subtract 6 from it if I want to reduce my timing 6 degrees? Then do that from there on up to my redline? Are the numbers in those boxes you actual degrees of timing? What are all the other boxes in the table? I just want to understand what I'm doing before I do it. Thanks for your help.
"reducing timing in the .56 g/cyl 3600 rpm and up 6 deg" What does this .56 g/cyl mean? So whatever number is in the 3600 box I should just subtract 6 from it if I want to reduce my timing 6 degrees? Then do that from there on up to my redline? Are the numbers in those boxes you actual degrees of timing? What are all the other boxes in the table? I just want to understand what I'm doing before I do it. Thanks for your help.
Re: Set base timing with LS1 edit? Sorry about the delay. The bastards have actually been making me work for my money.
G/cyl is grams per cylinder and is a representation of how much air is actually being compressed in the cylinder. This is useful for specific fuel injection / timing / etc...
To calculate g/cyl use the following
g/cyl = 15 * MAF(g/sec) / RPM ----- (I think this is it, I don't have my notebook on me <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" /> )
The numbers in the boxes represent the actual target ignition advance that the PCM will try to reach at the specific RPM and g/cyl.
Above .56 g/cyl and 3600 rpm your car is basically going to be in WOT (for NA). And it is this timing that I am assuming you are interested in pulling. Anything below this, you shouldn't be building any boost and the car should run relatively normal with the original timing values.
Just highlight all cells between the above mentioned cell and your redline. Check the "Selected Cells Only" and "Add" and then type in -6 in the box. This should pull all of your WOT timing 6 deg.
Good Luck
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
G/cyl is grams per cylinder and is a representation of how much air is actually being compressed in the cylinder. This is useful for specific fuel injection / timing / etc...
To calculate g/cyl use the following
g/cyl = 15 * MAF(g/sec) / RPM ----- (I think this is it, I don't have my notebook on me <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" /> )
The numbers in the boxes represent the actual target ignition advance that the PCM will try to reach at the specific RPM and g/cyl.
Above .56 g/cyl and 3600 rpm your car is basically going to be in WOT (for NA). And it is this timing that I am assuming you are interested in pulling. Anything below this, you shouldn't be building any boost and the car should run relatively normal with the original timing values.
Just highlight all cells between the above mentioned cell and your redline. Check the "Selected Cells Only" and "Add" and then type in -6 in the box. This should pull all of your WOT timing 6 deg.
Good Luck
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
