Ported LIM plus front PEM test data - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-06-2007, 09:51 PM   #21
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Quote:
Originally Posted by Sol
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.
Buy me one and I'll test it for you
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Old 05-06-2007, 09:59 PM   #22
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Originally Posted by agrazela
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Originally Posted by willwren
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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?
He has a 95, and that'* with PEM'* as the ONLY mod. This was the data he pulled off his Actron CP9145 BEFORE the ZM top end.

Sol, Plog? Too much of a Pita to get tuned right. Matched flow front to rear would be better. Why would you want to have to skew the front injectors (cost involved) to gain the most when you could be matched on all 6 ports?
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Old 05-06-2007, 10:14 PM   #23
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Originally Posted by willwren
He has a 95, and that'* with PEM'* as the ONLY mod. This was the data he pulled off his Actron CP9145 BEFORE the ZM top end.
So that'* with two PEM'* (and likely better done than my garage-job front only). Maybe my PEM isn't "fake," but rather "faux" or "ersatz." Be interesting to know what his MAF g/sec numbers are now...

BTW, his '95 is n/a, right?
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Old 05-06-2007, 10:26 PM   #24
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Quote:
Originally Posted by willwren
Sol, Plog? Too much of a Pita to get tuned right. Matched flow front to rear would be better. Why would you want to have to skew the front injectors (cost involved) to gain the most when you could be matched on all 6 ports?
I can get mine skewed for next to nothing, and it'* not a PITA. Plus, we all know the front and rear manifolds aren't matched evenly anyway.

But, let'* not get off topic.
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Old 05-06-2007, 10:47 PM   #25
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Ag, High flow cat and PEM'* WITHOUT adding material under the chin on the front. He is an L36.

Sol, considering Zoomer is telling customers the skew isn't necessary, and most of the cars considering this mod don't have the capability or budget to skew anyway, the Plog is turning into something of a joke or a hindrance. You pick.

Besides, the Plog itself can't even come CLOSE to the benefits of a PLIM and PTB. I find it hard to believe that anyone is interested in something that deliberately mis-matches flow between the front and rear.
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Old 05-06-2007, 10:57 PM   #26
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Quote:
Originally Posted by willwren
I find it hard to believe that anyone is interested in something that deliberately mis-matches flow between the front and rear.
In my questioning about the pipe diameter on a CAI or FWI, your response was that it may not be ideal but it is definitely an improvement. Could it be that some are taking that approach here?
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Old 05-06-2007, 11:02 PM   #27
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Agrazela, could you elaborate on what you mean by "tuned"?
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Old 05-06-2007, 11:18 PM   #28
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You have to balance cost vs. gain at some point. Look at the cost of the Plog, and compare it to the 'free' gains of the PLIM.

Cost plus PITA in tuning fall into the gutter real quick. Get standard PROPERLY ported PEM'* or small-runner headers instead.
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Old 05-06-2007, 11:27 PM   #29
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Will you just admit you hate ZZP already?

Plog has shown proven gains by many. It beats a front PEM anyday of the week. Believe me, I had one for 2.5 years. I'm feeling the gains already.

Can we get back on topic???
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Old 05-06-2007, 11:38 PM   #30
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Quote:
Originally Posted by Sol
Will you just admit you hate ZZP already?

Plog has shown proven gains by many. It beats a front PEM anyday of the week. Believe me, I had one for 2.5 years. I'm feeling the gains already.

Can we get back on topic???
Sol, I never did and never will hate ZZP. I just hate when ZZP starts vendor wars.

Plog gains are worthless for the guy who doesn't have the ability to skew injectors to make it work.
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