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Old 03-17-2007, 10:16 PM   #1
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Default powerlog fuel imbalance

i need to know where some of you got the info ( a link to the thread would be great) about the fuel imbalance with the powerlog

i cant find it on Club gp, they talk about it on 3800pro
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Old 03-17-2007, 10:21 PM   #2
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Old 03-17-2007, 10:26 PM   #3
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found it
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Old 03-17-2007, 10:46 PM   #4
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From that topic:

Quote:
Originally Posted by GTPboy
We have done some testing with the Plog on an L67..

Honestly the gains are next to nothing before skewing the injectors (2%IIRC). However once they are skewed the power is great, almost like headers.

We swapped out a front PEM with the PLOG and still noticed nice gains, after skewing of course.

And to the best of my knowledge we will have the fastest PLOG'ed car???? 12.3s going into tonight, and hopefully 11s after tonight (only changes being the PLOG and tuning).

HTH-at least a little-Jeremiah
Try searching on SKEW at ClubGP and 3800pro.com like I suggested in reply to your PM.
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Old 03-17-2007, 10:48 PM   #5
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If it'* any value, I was researching the XP Hotcam and called to ask about clearance etc. Couldn't talk to anyone three days in a row and then upon emailing got a response from ZZP'* lead tech regarding the VS vs XP that led into his telling me the XP hot requires a double roller timing chain. Their site clearly says you can run the stock chain and dampener.

Personally, I would have to apply some level of logic to what they say and what the people using the product say.

In this case, everyone running that log is stating the front becomes lean from the flow.
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Old 03-17-2007, 10:50 PM   #6
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http://www.clubgp.com/newforum/tm.as...de=&*=#3638590

Your own topic on 3800pro:
http://www.3800pro.com/forum/showthr...highlight=skew

http://www.3800pro.com/forum/showthr...highlight=skew

Less than two minutes of searching. You going to believe ZZP'* denial of the need or the practical experience of the people who have done it?

FYI, Gamoever got an email from ZZP stating the skew wasn't necessary.
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Old 03-17-2007, 10:57 PM   #7
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Even tho the skewing isn't nescessary, and it obviously isn't to just bolt it on. You will see more gains skewing the injectors. Via butt dyno you can litterally feel the difference.
Our 13sec L36 shows that-lol.
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Old 03-17-2007, 11:01 PM   #8
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Everyone that has skewed has noticed the difference. This clearly shows a problem.

The front 3 cylinders are running 1-2% leaner than the rear. But you only have one O2 sensor. That means 3 are slightly rich and 3 are slightly lean, with an overall good AFR according to the PCM.

Leaving the front three injectors to be more prone to KR issues from a lean condition.
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Old 03-18-2007, 12:32 PM   #9
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well i emailed chris at FEI to try to do my injectors 3% over the others from what i seen on club gp i few guys with the log did that and the car woke up and chris suggested 3% because that would work out better for him with the pool he has
right now as far as Kr i see Spikes from 0-3 degrees at Wot in lower RPM and in higher rpm i have none
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Old 03-18-2007, 12:35 PM   #10
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There is no special table adjustments required for the PL or PEMí*. As always, tuning would never hurt though.



Eric DeVries

ZZPerformance.com -Sales

(p): 616-532-5152

(f): 616-532-5110

-----Original Message-----
From: Mark Morgan [mailto:[email protected]]
Sent: Thursday, December 28, 2006 4:47 PM
To: Eric Devries
Subject: Re: recent purchase



is the zzp pcm tuned for the powerlogs already?
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