Ported LIM plus front PEM test data
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Posts like a Corvette
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From: San Diego, CA

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.
Originally Posted by agrazela
Originally Posted by willwren
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
PLIM plus front PEM tuned:
Max MAF: 152.00 g/sec
Median WOT KR: 0.32
It'* for real
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?
Thread Starter
Senior Member
Posts like a Corvette
Joined: Jan 2007
Posts: 1,451
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From: San Diego, CA

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.
BTW, his '95 is n/a, right?
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?
Plus, we all know the front and rear manifolds aren't matched evenly anyway.But, let'* not get off topic.
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.
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.
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.
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.
Cost plus PITA in tuning fall into the gutter real quick. Get standard PROPERLY ported PEM'* or small-runner headers instead.
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???
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???
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???

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


