Ported LIM plus front PEM test data - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 05-05-2007, 12:32 AM   #11
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wow nice info agrazela think i will take my EM out this week to have a close look at it just came back from the track and im all prime out i got from 16.26 to 15.81 from getting the L36 to breathe colder air and lower the temp that a .45 second ans 3MPH not bad for a stock motor
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Old 05-06-2007, 02:15 AM   #12
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As promised, here'* additional data after doing more tuning:

Stock tuned
Max MAF: 125.81 g/sec
Median WOT KR: 2.94

PLIM tuned
Max MAF: 137.35 g/sec
Median WOT KR: 1.08

PLIM plus front PEM tuned:
Max MAF: 152.00 g/sec
Median WOT KR: 0.32

It'* for real
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Old 05-06-2007, 05:45 PM   #13
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agrezela whit what are you getting those maf reading .can get these reading whit my aeroforce scan gauge .i have a maf sensor in lb/m or maf frequency .
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Old 05-06-2007, 07:23 PM   #14
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Quote:
Originally Posted by firebuick
agrezela whit what are you getting those maf reading .can get these reading whit my aeroforce scan gauge .i have a maf sensor in lb/m or maf frequency .
I am getting these readings with the PowrTuner.
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Old 05-06-2007, 07:41 PM   #15
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Quote:
Originally Posted by agrazela
As promised, here'* additional data after doing more tuning:


PLIM plus front PEM tuned:
Max MAF: 152.00 g/sec
Median WOT KR: 0.32

It'* for real
Interesting. jr's3800 was getting 151 g/sec with PEM'* only, just before the ZM LIM and TB went on the car.
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Old 05-06-2007, 07:47 PM   #16
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by agrazela
As promised, here'* additional data after doing more tuning:


PLIM plus front PEM tuned:
Max MAF: 152.00 g/sec
Median WOT KR: 0.32

It'* for real
Interesting. jr's3800 was getting 151 g/sec with PEM'* only, just before the ZM LIM and TB went on the car.
How much did the rear PEM add? I know it'* not much, but do you think 5-8 g/sec would be about right?
Also, he had a replacement UIM on already didn't he? How about you Agrazela?
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Old 05-06-2007, 08:02 PM   #17
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The UIM isn't the restriction. The LIM is. Flow area of each UIM port is far more than any LIM port.
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Old 05-06-2007, 08:17 PM   #18
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Quote:
Originally Posted by willwren
The UIM isn't the restriction. The LIM is. Flow area of each UIM port is far more than any LIM port.
I'm talking the inlet, but then thinking about it, I do recall it is bigger than the TB outlet.
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Old 05-06-2007, 09:48 PM   #19
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by agrazela
As promised, here'* additional data after doing more tuning:


PLIM plus front PEM tuned:
Max MAF: 152.00 g/sec
Median WOT KR: 0.32

It'* for real
Interesting. jr's3800 was getting 151 g/sec with PEM'* only, just before the ZM LIM and TB went on the car.
Is that 151 g/sec on jr's3800'* car with no mods at all? Remind me...what year is his car?
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Old 05-06-2007, 09:49 PM   #20
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It would be cool to see tests with a ZZP Plog. I just got one on my car to get rid of the PEM. I instantly felt a slight gain even without tuning.
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