RICH IDLE LEAN UPPER END arap 6E BIN
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RICH IDLE LEAN UPPER END arap 6E BIN
we are running 30lbs injector and aeromotive fuel pump. Running aRAP bin using tunerpro 6e11 to tune. Fp at 48psi .. not sure why we are running lean at the upper rpm's motor is a 350 w/vortec heads and 268 extreme comp cam. How can i richen the upper end and lean the idle on the lower end. Tried using a 32b file to tune but it just acted screwy and was unable to tune the PW table to get it to run properly. make a small change ex 2.00 to 1.95 msec and no change tried big changes to 1.00msec no change ... I think the 32b file maybe messedup.
Thanks Scott
Thanks Scott
Joined: Feb 2000
Posts: 1,855
Likes: 13
From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
adjust the first maf table for the idle, and add fuel in the pe vs coolant and pe vs rpm tables for the lean up top
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Junior Member
Joined: Jan 2002
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<DIV><FONT face=Verdana size=2>adjust the first maf table for the idle,
</FONT></DIV>
<DIV><FONT face=Arial size=2>Volts
grams/sec</FONT></DIV>
<DIV><FONT face=Arial
size=2>1.46
22.27 </FONT></DIV>
<DIV><FONT face=Arial size=2>1.28</FONT><FONT face=Arial
size=2>
17.69<BR>1.10
13.92<BR>0.91
10.87<BR>0.73 8.35<BR>0.55 6.20<BR>0.37 4.49<BR>0.18 3.23<BR>0.00
8.35<BR></FONT></DIV>
<DIV><FONT face=Arial size=2><STRONG>So am I shifting the Gm/sec into a lower
volt section of the table</STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>example</FONT></DIV>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial
size=2>1.46
22.27 </FONT></DIV>
<DIV><FONT face=Arial size=2>1.28</FONT><FONT face=Arial
size=2>
17.69<BR>1.10 15.92 (made
up number)<BR>0.91
13.92<BR>0.73 10.87<BR>0.55 8.35<BR>0.37 6.20<BR>0.18 4.49<BR>0.00 3.23<BR></FONT></DIV></DIV>
<DIV></FONT><FONT face=Verdana size=2>add fuel in the pe vs coolant
</FONT></DIV>
<DIV><FONT face=Verdana size=2>and </FONT></DIV>
<DIV><FONT face=Verdana size=2>pe vs rpm tables for the lean up top</FONT></DIV>
<DIV><FONT face=Verdana size=2></FONT> </DIV>
<DIV><FONT face=Verdana size=2><STRONG>so adding % is adding fuel to What
table?</STRONG></FONT></DIV></BODY></HTML>
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2719.2200" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Verdana size=2>adjust the first maf table for the idle,
</FONT></DIV>
<DIV><FONT face=Arial size=2>Volts
grams/sec</FONT></DIV>
<DIV><FONT face=Arial
size=2>1.46
22.27 </FONT></DIV>
<DIV><FONT face=Arial size=2>1.28</FONT><FONT face=Arial
size=2>
17.69<BR>1.10
13.92<BR>0.91
10.87<BR>0.73 8.35<BR>0.55 6.20<BR>0.37 4.49<BR>0.18 3.23<BR>0.00
8.35<BR></FONT></DIV>
<DIV><FONT face=Arial size=2><STRONG>So am I shifting the Gm/sec into a lower
volt section of the table</STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>example</FONT></DIV>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial
size=2>1.46
22.27 </FONT></DIV>
<DIV><FONT face=Arial size=2>1.28</FONT><FONT face=Arial
size=2>
17.69<BR>1.10 15.92 (made
up number)<BR>0.91
13.92<BR>0.73 10.87<BR>0.55 8.35<BR>0.37 6.20<BR>0.18 4.49<BR>0.00 3.23<BR></FONT></DIV></DIV>
<DIV></FONT><FONT face=Verdana size=2>add fuel in the pe vs coolant
</FONT></DIV>
<DIV><FONT face=Verdana size=2>and </FONT></DIV>
<DIV><FONT face=Verdana size=2>pe vs rpm tables for the lean up top</FONT></DIV>
<DIV><FONT face=Verdana size=2></FONT> </DIV>
<DIV><FONT face=Verdana size=2><STRONG>so adding % is adding fuel to What
table?</STRONG></FONT></DIV></BODY></HTML>
Joined: Feb 2000
Posts: 1,855
Likes: 13
From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Can't read you tables. Basically, increase the maf table values by the % that you are lean for a base, then tune from there. If your blm is 150, then 150/128=.17 or 17% lean. I just take the first maf tables first 4 values and multiply all of the values by 1.17 or 17%. You will have to play with it from there. Trial and error is what gets the tune right, and it will take time. I think I burned maybe 30-40 chips to get the idle and part throttle close to 128 alone.
Increasing the numbers in the pe vs. coolant and pe vs. rpm tables adds fuel, and reducing them subtracts fuel.
Take a look at the diy prom section under the stickys for the maf tuning tips if you haven't already.
Increasing the numbers in the pe vs. coolant and pe vs. rpm tables adds fuel, and reducing them subtracts fuel.
Take a look at the diy prom section under the stickys for the maf tuning tips if you haven't already.
Supreme Member
Joined: Jul 1999
Posts: 2,149
Likes: 4
From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
30# injectors are probably too large for his application, unless he has an SC or turbo.
He said he is rich at idle, so the 30# injectors can not pulse short enough at idle. Therefore, I would turn down the fuel pressure to the stock 43psi. If that doesnt do it, then lower the MAF value in MAF table 1..by multiplying by 80% or there about.
What is the BLM value at idle??????
But as said by another above, add fuel on the top end via the "WOT %Change to Fuel/Air Ratio vs RPM" table. (The PE vs. RPM table is for our LS1 cars.)
What does the O2 sensor put out at WOT?????
Do you have a wide band O2 sensor????
He said he is rich at idle, so the 30# injectors can not pulse short enough at idle. Therefore, I would turn down the fuel pressure to the stock 43psi. If that doesnt do it, then lower the MAF value in MAF table 1..by multiplying by 80% or there about.
What is the BLM value at idle??????
But as said by another above, add fuel on the top end via the "WOT %Change to Fuel/Air Ratio vs RPM" table. (The PE vs. RPM table is for our LS1 cars.)
What does the O2 sensor put out at WOT?????
Do you have a wide band O2 sensor????
Thread Starter
Junior Member
Joined: Jan 2002
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BLM at idle was 112.. tuning with the stock narrow band ..... as for the wide open throttle we were around 131 BLM (very short time) I need to check the O2 output voltage .. I assume it should be around .8 or so once tuned properly.
This same engine combo with a carb intake runs just over 400 HP do you feel the 30's are too large ..?
As for the MAF table reduce all the numbers by 80%... or the 112/121=92%
thanks for your help Scott
This same engine combo with a carb intake runs just over 400 HP do you feel the 30's are too large ..?
As for the MAF table reduce all the numbers by 80%... or the 112/121=92%
thanks for your help Scott
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