85mm mass air flow questions
your right, dont do it. car will self destruct.............
if he hasnt had it tuned for the mods he has then the stock maf cal is also completely differant than what the car needs. so......... your saying dont ever do any mod of any kind without an instant tuner on hand. good thing i tune huh
if he hasnt had it tuned for the mods he has then the stock maf cal is also completely differant than what the car needs. so......... your saying dont ever do any mod of any kind without an instant tuner on hand. good thing i tune huhStock LS1 MAF table
1500 HZ = 2.32 grams/sec airflow
-
-
-
-
11250 HZ = 439.20 grams/sec airflow
85mm MAF table
1500 HZ = 1.4 grams/sec airflow
-
-
-
-
11250 HZ = 355.16 grams/sec airflow
So, if you can actually comprehend what is demonstrated here. The MAF will be indicating that much more air is entering the engine than actually is, when swapping an 85mm MAF for a stocker.
You're just another NEWB that should type less & listen more, before you cause someone engine trouble.
Stock LS1 MAF table
1500 HZ = 2.32 grams/sec airflow
-
-
-
-
11250 HZ = 439.20 grams/sec airflow
85mm MAF table
1500 HZ = 1.4 grams/sec airflow
-
-
-
-
11250 HZ = 355.16 grams/sec airflow
So, if you can actually comprehend what is demonstrated here. The MAF will be indicating that much more air is entering the engine than actually is, when swapping an 85mm MAF for a stocker.
You're just another NEWB that should type less & listen more, before you cause someone engine trouble.
1500 HZ = 2.32 grams/sec airflow
-
-
-
-
11250 HZ = 439.20 grams/sec airflow
85mm MAF table
1500 HZ = 1.4 grams/sec airflow
-
-
-
-
11250 HZ = 355.16 grams/sec airflow
So, if you can actually comprehend what is demonstrated here. The MAF will be indicating that much more air is entering the engine than actually is, when swapping an 85mm MAF for a stocker.
You're just another NEWB that should type less & listen more, before you cause someone engine trouble.
your assuming that his fuel trims are already inline with what they should be. but unless he has had a tune for his current mods then they are already out of whack. the bigger maf may bring it back inline or make it farther off. but either way its not going to kill the engine by doing it. i think he is on track on what is goin on and can handle the rest. the O2's will correct the idle and cruise fueling till the point of maxing the fuel trims. tho it might be slugish or hard on the O2's it wont kill the engine. the pcm will run off the richest table at WOT were it be the maf/ve/pe/or open loop table so the chances of it going dangerously lean is slim to none. but this all goes back to not seeing a real benifit unless it is tuned. big differance if you can and should. but what do i know im a newb
good day know it all, sir Last edited by gold98Z28; Sep 29, 2008 at 06:14 PM.
thus the reason slp adds the resistor to bring it more inline with the stock fbody maf table that is hit or miss if it actually corrects it near what it needs to be. and your just a moroon(put an extra o in just for you) that thinks they know it all but really dont have a clue.
your assuming that his fuel trims are already inline with what they should be. but unless he has had a tune for his current mods then they are already out of whack. the bigger maf may bring it back inline or make it farther off. but either way its not going to kill the engine by doing it. i think he is on track on what is goin on and can handle the rest. the O2's will correct the idle and cruise fueling till the point of maxing the fuel trims. tho it might be slugish or hard on the O2's it wont kill the engine. the pcm will run off the richest table at WOT were it be the maf/ve/pe/or open loop table so the chances of it going dangerously lean is slim to none. but this all goes back to not seeing a real benifit unless it is tuned. big differance if you can and should. but what do i know im a newb good day know it all, sir
your assuming that his fuel trims are already inline with what they should be. but unless he has had a tune for his current mods then they are already out of whack. the bigger maf may bring it back inline or make it farther off. but either way its not going to kill the engine by doing it. i think he is on track on what is goin on and can handle the rest. the O2's will correct the idle and cruise fueling till the point of maxing the fuel trims. tho it might be slugish or hard on the O2's it wont kill the engine. the pcm will run off the richest table at WOT were it be the maf/ve/pe/or open loop table so the chances of it going dangerously lean is slim to none. but this all goes back to not seeing a real benifit unless it is tuned. big differance if you can and should. but what do i know im a newb
good day know it all, sir
: violin:You just contradicted your own advice & finally gave him an explanation of why he shouldn't use an 85mm MAF without a tune.
I never said "Kill the engine" (you must work for the media, the way you spin a statement
). I said "cause someone engine trouble," ie; poor idle, hesitation, maxed out fuel trims.I can see that you wont
until you have the last word; so I'm out....Post away.transam98, If you go w/ an 85mm MAF, don't forget the tune.
where is this contradiction you speak of. i stated in my first post i highly recomend a tune, and that he would not see any benifit without one........ i dont remember him saying he needed a detailed outline as to y or y not. i do recall someone saying that "He cannot get away without a tune" tho it is done on a daily basis. some with good to fair results some with poor depending on how inline the stock cal is for the current mods. but no doubt they are not optimized without a tune. just cant thro parts at a car and exspect the most out of them. it might be harder than a 9/16 distributor wrench and a small flat blade to adjust the carb or a jet change if you dont have tuning software and the knowledge to properly use it. but you can still change parts and do some trial and error to see what your car likes till you can afford to get a tune in there.
