What is normal g/cyl at WOT on an LS1?
08-29-2004, 10:04 AM
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What is normal g/cyl at WOT on an LS1? What is the normal reading for g/cyl on an LS1 when referencing the spark table at WOT? I would imagine if it is off either your MAF is not reading correctly or you have a vacuum leak, right? Without recalibrating my MAF I only see about .6 at WOT. I can only see 1. by mutliplying my MAF table by 10%.
08-29-2004, 11:00 AM
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Originally Posted by Another_User
What is the normal reading for g/cyl on an LS1 when referencing the spark table at WOT? I would imagine if it is off either your MAF is not reading correctly or you have a vacuum leak, right? Without recalibrating my MAF I only see about .6 at WOT. I can only see 1. by mutliplying my MAF table by 10%.
There won't be a normal value for g/cyl it represents the load the engine is under. Load is related to air flow and of course how much power you are making. How would you know if the g/cyl is off since it is based on your maf and rpm?
Gary
08-29-2004, 11:01 AM
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That all depends on your engine's airflow, but I see .76
g/cyl as a rule. Vacuum leak is going to mean diddly at
higher RPM unless it's a leak as big as your TB. Low
readings at upper RPM WOT can only mean either a
miscalibrated MAF / table combo, or a wheezing
setup.
However my setup may be biased to the rich side
and if there's a real stock number that would be
interesting. Something around 4000RPM that's the
sweet spot on the stock cam.
g/cyl as a rule. Vacuum leak is going to mean diddly at
higher RPM unless it's a leak as big as your TB. Low
readings at upper RPM WOT can only mean either a
miscalibrated MAF / table combo, or a wheezing
setup.
However my setup may be biased to the rich side
and if there's a real stock number that would be
interesting. Something around 4000RPM that's the
sweet spot on the stock cam.
08-29-2004, 11:08 AM
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Originally Posted by red ws6 99
There won't be a normal value for g/cyl it represents the load the engine is under. Load is related to air flow and of course how much power you are making. How would you know if the g/cyl is off since it is based on your maf and rpm?
Gary
Gary
08-29-2004, 02:55 PM
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Originally Posted by Another_User
I wouldn't...that why I want to know what people see under WOT. It gives me something to compare it to, which should be pretty close unless they have a ported TB.
If your are talking stock to stock with the same environmental conditions then you are correct. My car is turbocharged you could not expect the numbers to even be close.
08-29-2004, 11:23 PM
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On the "Advance" histogram mine usually tops out @ .76g/cyl. Looking at the more accurate breakdown from the .csv log I regularly see .79g/cyl. @ WOT. HTH.
Nick
Nick
