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Evoscan Airflow Hz pegged??

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Old Feb 1, 2009, 08:16 AM
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Evoscan Airflow Hz pegged??

When logging airflow (Hz) in Evoscan it rises like normal and then pegs at 1593.75 Hz all the way to the end of the pull. Any ideas on how to get it to read normally all the way through the pull? I'm guessing it has to be some sort of limit that I need to increase, but I'm not sure where to make this change.
Old Feb 1, 2009, 08:38 AM
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What version of evoscan are you using?

EDIT:
step 1: search for "1593.75"
step 2: read...read some more? https://www.evolutionm.net/forums/5355426-post65.html

Last edited by scheides; Feb 1, 2009 at 08:46 AM.
Old Feb 1, 2009, 09:20 AM
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Originally Posted by scheides
What version of evoscan are you using?

EDIT:
step 1: search for "1593.75"
step 2: read...read some more? https://www.evolutionm.net/forums/5355426-post65.html
I'm using 2.5 and I have rescaled my MAF; that thread has all the useful pictures removed as well. Anyone had this issue and what was the resolution?
Old Feb 1, 2009, 10:59 AM
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I got the 2-byte airflow reading correctly, regular airflow is still pegged. Oh well...
Old Feb 1, 2009, 12:50 PM
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i have the same issue with my red. i was wondering if it really is a problem.
Old Feb 1, 2009, 03:46 PM
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The real airflow is the 2-byte airflow. The 1-byte airflow is a clipped version of the 2-byte airflow and has nothing to do with fueling. Mellon would be the most likely person to have maxed out the stock MAF, and even at 650 whp, it doesn't appear that he's maxed it out yet.
Old Feb 2, 2009, 10:53 AM
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I'll have to remember to log airflow when I push it up to 700+awhp again...I'll probably pick up some race gas this week and finish the race gas tune this weekend if I have time.
Old Feb 2, 2009, 10:59 AM
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I logged 2-byte yesterday and on a pretty much maxed 50-trim the max airflow reading I saw was ~2325Hz. I was looking for this data in another thread regarding the FP Red to calculate lb/min: https://www.evolutionm.net/forums/ev...gs-wanted.html
If anyone has airflow logs I would be interested in the data.
Old Feb 2, 2009, 11:00 AM
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this is mine @ 600awhp ish

Old Feb 2, 2009, 05:42 PM
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Originally Posted by Mellon Tuning
this is mine @ 600awhp ish

I need more turbo
Old Feb 2, 2009, 11:01 PM
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Originally Posted by Mellon Tuning
Do you mind posting that with time? You said you would when you had a chance.
Old Feb 3, 2009, 11:12 AM
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Originally Posted by KevOVIII
Do you mind posting that with time? You said you would when you had a chance.
I have no idea where that log is anymore what do you need time for anyway?
Old Feb 3, 2009, 11:36 AM
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Originally Posted by Mellon Tuning
I have no idea where that log is anymore what do you need time for anyway?
Its one way to calc HP and TQ.
Old Feb 3, 2009, 12:05 PM
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Originally Posted by mrfred
Its one way to calc HP and TQ.
I was playing dumb
Old Feb 3, 2009, 12:26 PM
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Originally Posted by Mellon Tuning
I was playing dumb


My "thought" dyno says you'll be at roughly 347 to the wheels on a Butt dyno.

-E


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