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Dynamic Airflow only goes to .59-.61 g/cyl, is it OK?

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Old 05-04-2008, 07:56 AM
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Default Dynamic Airflow only goes to .59-.61 g/cyl, is it OK?

Scanned my car with HPT and saw that dynamic airflow only reaches 0.60-0.61g/cyl. However after reading a bit it seems that values of 0.75-0.80g/cyl should be achieved.
So is this normal, or is my tune crap?
Engine is: 383ci, 9.2:1 CR, mild cam, LS6 intake, Patriot stage2 heads, stock ported maf and 80mm TB
Old 05-04-2008, 12:24 PM
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That is way low for a 383, stock 5.7 motors are about 0.8 g/cyl.
The ported MAF is a probable source of error, that's what porting
does to them (more airflow for the same freq reading). You might
try and swap on a virgin stocker if you can find one. They do sell
remans at fairly reasonable prices. Though maybe less reasonable
when you're overseas.
Old 05-04-2008, 05:46 PM
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yepp, it's hard to conduct any experiments requiring change of parts
so is it my tune that is sh.t then?
Old 05-04-2008, 09:19 PM
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Wouldn't tuning the ported MAF work similarly as tuning a stock MAF?
Old 05-05-2008, 05:10 AM
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Could also be other stuff out of whack like ve table & injector flow, (ie) Both skewed in order to work properly etc.
Old 05-06-2008, 10:43 AM
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I wonder if someone knowledgeable could take a quick look




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