3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

DFI over SD and MAF

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Old Jan 17, 2005 | 12:35 AM
  #1  
kandied91z's Avatar
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DFI over SD and MAF

everyone knows that it's possible to program speed density computers to run almost anything as well as maf cars however there are always little hickups in the system and headaches that come along with doing so.

how many here are running a similar system using a type of DFI and why did you choose it over SD/MAF stock programming?
Old Jan 19, 2005 | 06:37 PM
  #2  
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Re: DFI over SD and MAF

The factory ecm can control alot more than dfi can, which makes it a better choice for a street driven car. The problem is that not everybody understands and can tune the factory ecms.

If you have the money and want simplicity, then get an aftermarket ecm.

The only thing that I see wrong with the factory ecm is that I run out of data above 6375 rpm. Anything over that and my log files just flatline at 6375, but that can probably be corrected in the source code.

Are you still having problems? I just tuned a sd car this past weekend, and it is running fine with a hot cam, headers, ported heads and the stock tpi intake. You have to take some time and nail down the lower ve tables to get it right, it took about 3-4 hours.

You can also use the new super aujp bin file as a starting point and it fixes some of the problems with the stock code.
Old Jan 20, 2005 | 01:00 AM
  #3  
kandied91z's Avatar
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Re: DFI over SD and MAF

well i was just curious what made people do so as i was looking into the new setup that just came out. as for myself yes, i've had 6 shops and 2 gm technicians who helped put the original setup together try to work with it. i've gone as far as putting people up in hotels and paying travel expenses if they could pull it off and no one has been able to nail it. everything comes out good on scanners, sensors, timing, compression, vaccum, etc but it just doesn't work like factory. some have come close but it's always too rich or to lean so right about now i'm definately looking to other alternatives that may simplify. i have a pretty decent layout with it but it could be better. when the guys at gm started telling me i should look to dfi i'm starting to loose hope.
Old Jan 20, 2005 | 10:13 AM
  #4  
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Re: DFI over SD and MAF

Damn dude, do you have any scanner data? Something from datamaster, craig moates or a scanner? Do you have your .bin to email it to me?
Old Jan 20, 2005 | 01:14 PM
  #5  
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Re: DFI over SD and MAF

at this time no... i gave up on the sbc for awhile and doing something different with the new project.
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