Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

tuning MAF

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Old Sep 10, 2011 | 11:38 AM
  #1  
aknight_sa's Avatar
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tuning MAF

is there an application i can use to log my actual MAF (g/s) against frequency (Hz) to reprogram the MAF table in the ECU?

i have a 97 camaro with LT1
Old Sep 10, 2011 | 11:33 PM
  #2  
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Re: tuning MAF

Yes. Take a look at Jet DST. It is Tunercat for OBDII LT1s. It is distributed by companies such as Summit and Jegs. There is also an unsupported, out-of-date very limited capabilities over-priced piece of stuff called LT1Edit. I own it and regret the day I purchased it.
Old Sep 11, 2011 | 12:34 AM
  #3  
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Re: tuning MAF

I do own Jet DTS and it's the MAF calibration table I'm trying to tune.. Looking for a program that can log the actual airflow vs frequency values

All what I can log is the MAF vs rpm
Old Sep 11, 2011 | 07:11 AM
  #4  
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Re: tuning MAF

My bad. What you really asked for is data logging software which will give you information so you can modify the table in Jet DST and reprogram the PCM. I combined the logging and programming parts in my mind, when it is really two different pieces of software for the OBDII LT1. Unlike LS1 apps which combine logging and programming, ours are separate.
I use AutoTap for logging. It will log MAF rate in g/s, but will not build a table like you want. You might want to look into MXScan ( http://www.monodax.com/ ). They don't list the PIDs they will log, but it is the only alternative I ever found for out orphan OBDII LT1s.
Old Sep 11, 2011 | 09:13 AM
  #5  
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Re: tuning MAF

To accurately calibrate the MAF sensor, you would have to install the MAF, along with whatever is on the inlet and outlet side, on a head flow bench. Then convert the head flow bench volume flow measurements to mass flow, while recording the output frequency of the sensor.
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