5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Reprogram the 5.0 computer

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Old 03-01-2010, 02:57 PM
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radtexas
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Default Reprogram the 5.0 computer

I have a kit car that I used a 92 Mustang 5.0 drivetrain. I eliminated all the polution stuff. I had it stroked to a 347, 30# injectors, larger cam, etc. I have the stock tune and it runs but very rich. Is there a way to send in the computer and have it reflashed with a mild tune to run on the new setup? I am sure they will want all the details but it is not in the best shape to take some where and would like to just reprogram and run. Is this possible? If so can someone pass on some good sources?
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Old 03-01-2010, 03:10 PM
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86 5.0L
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take it to a dyno shop and have them tune it, I think they reprogram the ECU, if not they burn a chip and install it, piggybacking on the stock ECU
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Old 03-01-2010, 09:46 PM
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mjr46
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you should be able to get it to run okay with no chip, by properly setting tps, timing, fuel pressure and making sure no codes exist as well as having a matching maf for inj, it should run okay, fyi they chip the ec iv not reflash
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Old 03-02-2010, 07:06 AM
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projectresto83
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What are the rest of the details in your build???
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Old 03-02-2010, 01:30 PM
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luckythirteen13
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Originally Posted by mjr46
you should be able to get it to run okay with no chip, by properly setting tps, timing, fuel pressure and making sure no codes exist as well as having a matching maf for inj, it should run okay, fyi they chip the ec iv not reflash
+1, the dyno tune should be used to maximize power, not to fix problems that can be fixed with the proper adjustments
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Old 03-02-2010, 01:41 PM
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radtexas
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Originally Posted by projectresto83
What are the rest of the details in your build???

Engine rebuild 347 SCAT stroker kit (installed by local engine shop)
Edelbrock 2281 Cam & Ford Lifters
Performer RPM II intake
30# injectors w/ C&L to match
Edelbrock 1.9 performer heads
1.6 roller rockers
190 lph fuel pump
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Old 03-02-2010, 02:45 PM
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mjr46
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Originally Posted by radtexas
Engine rebuild 347 SCAT stroker kit (installed by local engine shop)
Edelbrock 2281 Cam & Ford Lifters
Performer RPM II intake
30# injectors w/ C&L to match
Edelbrock 1.9 performer heads
1.6 roller rockers
190 lph fuel pump
try clocking the MAF, I 'M not a fan of them for such
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