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maf tuning and datalog

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Old Jun 3, 2008 | 08:11 AM
  #1  
DSmith's Avatar
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Joined: Mar 2004
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From: Brandon Mississippi
Car: 1989 Camaro
Engine: 383
Transmission: 700R4
Axle/Gears: 3.73
maf tuning and datalog

Its been the better part of 3 years since I messed with this stuff and I have once again got my car up and running.

I do have a WB-O2 and have the blm's locked to 128. I have noticed that I have 2 MAF readings in the datalog, both show grms/sec. shouldn't one or the other show the maf voltage input? if so how do I change it to show the actual voltage?

Do you maf guys tune the maf tables buy adjusting the grms/sec to the AFR of a given rpm? This is what I did to get the idle right but was just wanting to make sure that was the best way.

I didn't get the wb-o2 untill after my engine went down so I had never got to tune with it untill now but I can see its gonna be a lot better than the way I was doing it.

Thanks in advance,
Dewayne
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Old Jun 3, 2008 | 10:26 AM
  #2  
RBob's Avatar
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: maf tuning and datalog

The two airflow readings are: raw MAF airflow, adjusted MAF airflow (which is what is used for the PW calculation). See the Tuning Guide sticky for MAF Miscellanea. IIRC I outlined how to show the MAF voltage in the data stream.

RBob.
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Old Jun 3, 2008 | 10:41 AM
  #3  
DSmith's Avatar
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Member
 
Joined: Mar 2004
Posts: 472
Likes: 1
From: Brandon Mississippi
Car: 1989 Camaro
Engine: 383
Transmission: 700R4
Axle/Gears: 3.73
Re: maf tuning and datalog

Thanks RBob,

Its amazing how mush I have forgotten in the last couple years since I havn't been messing with this stuff.

Now I have to figure out whats going on with my aldl cable, it data logs for a couple minutes then its like it looses its feed or somthing, then it will not connect back and acts like I don't even have it hooked up.

Oh well, I guess it will give me somethingto do today.

Thanks again,
Dewayne
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