paging 85MikeTPI
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Le Mans Master
Joined: May 2004
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From: Hellinois
Finalist 2020 C4 of the Year - Modified
paging 85MikeTPI
Mike your inbox is full, here is a question for you. Let me see if I understand, arap IS the code for an '89 Corvette ecm? I've been looking on ebay and they all list the ecm as fitting a number of years. Are they all arap code or am I missing the whole thing?
Tech Contributor
Joined: Oct 2008
Posts: 3,729
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From: Custer, WI
arap is the code that the computer runs, it's a ".bin"
http://forums.corvetteforum.com/c4-s...-aypy-bin.html
little bit of an explanation here
any 86-89 ecm should work, you can load an arap bin into it with an adapter from moates if you have a hard time finding an ecm that came with an arap chip.
arap bin is obtainable pretty easily a quick Google search will yield results
http://forums.corvetteforum.com/c4-s...-aypy-bin.html
little bit of an explanation here
any 86-89 ecm should work, you can load an arap bin into it with an adapter from moates if you have a hard time finding an ecm that came with an arap chip.
arap bin is obtainable pretty easily a quick Google search will yield results
Last edited by Pwnage1337; Sep 6, 2012 at 12:39 AM.
Race Director
Joined: Nov 2003
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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Yep. ARAP is a customized, "downloadable" code into the late 80's ECMs. Though I would think it might be specific to the non-CSI 89 ECM. (Doesn't mean it can't be tweaked for use with cold-start injector equipped years.)
ARAP really has nothing to do with what ECM you're buying. It's just one version of (generic performance) code you can load as a starting point for tuning. Without looking at the ads you're seeing, maybe ARAP is the most commonly loaded "bin" for the last 80's performance cars. It's certainly a good starting point.
FWIW, I believe ARAP is written for ECM's running the $6E mask. (Though I don't recall the specific years...might be 87-89 GM 350. (or maybe 86-89 as stated in the post above.)
You have a computer (ECM), a code file (variable settings for the program to use), and a definition file (which is a type of mask for looking at the code file.
ARAP really has nothing to do with what ECM you're buying. It's just one version of (generic performance) code you can load as a starting point for tuning. Without looking at the ads you're seeing, maybe ARAP is the most commonly loaded "bin" for the last 80's performance cars. It's certainly a good starting point.
FWIW, I believe ARAP is written for ECM's running the $6E mask. (Though I don't recall the specific years...might be 87-89 GM 350. (or maybe 86-89 as stated in the post above.)
You have a computer (ECM), a code file (variable settings for the program to use), and a definition file (which is a type of mask for looking at the code file.
Race Director
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From: Overland Park Kansas
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http://forums.corvetteforum.com/c4-p...1227165-a.html
Buy a moates piggy-back card, chips, burner, and you're ready to go. Even with ARAP -- is that's where you want to start.
Buy a moates piggy-back card, chips, burner, and you're ready to go. Even with ARAP -- is that's where you want to start.
Thread Starter
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
Thanks to both of you for clearing this up for me. Please pardon my illiteracy in the computer world. While I am tempted to do the tuning myself I just don't feel good about it. I am planning on having the tuning done by someone with a dyno who can do it right. Does this sound doable?
Racer
Joined: Sep 2006
Posts: 289
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From: Newark DE
^^^^ this...
ARAP is just the code letters for a particular vehicle option pkg programming. GM was known for some glaring bugs in the early days of EFI. The '89 ARAP code was the most refined and should be used as the base for any '86-'89 MAF tuning.
(inbox cleaned)
ARAP is just the code letters for a particular vehicle option pkg programming. GM was known for some glaring bugs in the early days of EFI. The '89 ARAP code was the most refined and should be used as the base for any '86-'89 MAF tuning.
(inbox cleaned)
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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