Eprom Information
#1
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Eprom Information
Excuse me if this is a stupid question with an obvious answer but I am currently restoring my GTA and decided to look at the internals of the ECU. Can someone give me some information on the below? Is it a stock ECM is it has an aftermarket chip?
#3
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Re: Eprom Information
Any info or link to some more details on this JET chip?
#4
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Re: Eprom Information
How would I be able to know what's in the chip? Do you think this is one of those mail order chips? Can I simply remove it or would I need a stock chip instead?
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Engine: check
Transmission: check
Re: Eprom Information
It may or may not be a Jet chip. It appears that there was a label on it, but is gone.
With the window open it may have been erased and re-burned. At a minimum get a small square of black electrical tape and cover that window.
Had a thought, pop the cover off the ECM and see if the chip label is in there someplace. Maybe it just fell off?
RBob.
With the window open it may have been erased and re-burned. At a minimum get a small square of black electrical tape and cover that window.
Had a thought, pop the cover off the ECM and see if the chip label is in there someplace. Maybe it just fell off?
RBob.
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Car: 88 convertible
Engine: 5.7L
Transmission: 4+3 maual
Axle/Gears: 3.07
Re: Eprom Information
Your original EPROM is attached to the carrier you see in the pic. It by=passes your chip but uses a 90 degree header to connect your original NETRES. You will have to remove the case cover to see (or remove) the original chip. HTH!
#7
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Re: Eprom Information
Hi guys. Thanks for all the information. I actually plan to go into prom programming at a later phase as currently I am focusing on rebuilding the car. I do have some experience with electronics so hopefully I will grasp the subject once I focus on it. I did myself a standalone MP3 player back in the late 90s using PIC and interfacing a standard ATAPI Interface.
For now I will try to open the ecm case and see if there are any stickers and also take a peek at the bypassed prom. Will probably post pictures again.
For now I will try to open the ecm case and see if there are any stickers and also take a peek at the bypassed prom. Will probably post pictures again.
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#8
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Re: Eprom Information
I opened the ECM and found the original GTA PROM.
Pic below.
Question : if I want to put it stock and remove the adapter and chip I am assuming it will work stock correct? The car does not have a Catalyser most probably it has been disabled. Would they have made those changes inside the aftermarket prom or the stock one? Sorry if my question seems stupid.
Pic below.
Question : if I want to put it stock and remove the adapter and chip I am assuming it will work stock correct? The car does not have a Catalyser most probably it has been disabled. Would they have made those changes inside the aftermarket prom or the stock one? Sorry if my question seems stupid.
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Re: Eprom Information
Currently the PROM on top in the socket w/o the tape over the window is running the ECM/engine.
To put it back to stock pop the adapter out of the ECM socket, carefully pull the MEMCAL off the adapter. Then plug MEMCAL into ECM socket.
RBob.
To put it back to stock pop the adapter out of the ECM socket, carefully pull the MEMCAL off the adapter. Then plug MEMCAL into ECM socket.
RBob.
#10
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Re: Eprom Information
So it means that any feature that might have been disabled or enabled such as smog pump checks, egr checks, etc would be in the Prom without the tape correct?
#12
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Re: Eprom Information
Understood. Thanks for the info. Really appreciate it
#13
Re: Eprom Information
Originally Posted by aseychell
Question : if I want to put it stock and remove the adapter and chip I am assuming it will work stock correct? The car does not have a Catalyser most probably it has been disabled. Would they have made those changes inside the aftermarket prom or the stock one? Sorry if my question seems stupid...
#14
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Re: Eprom Information
I am going to open the engine to change all gaskets. Will verify timing and injectors while I am at it. Thanks for the tip.
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