If have a 98 gst and found an eprom out of 95 GSX at a junkyard for $200. Not a great price but their hard to come by. Does anyone know if I have to buy a GST eprom or will the gsx suffice. I don't know if the ecu has anything to do with the transfer case and such, so I'm just wondering if it will work for my car. I know it doesn't matter if they are from a manual or automatic, because they program the injector size when they burn the chip. I searched for this anwser on this site and dsmlink.com and found no definitive answer. Any help is appreciated.
EPROM, Awd or Fwd?
4cefedGST
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If have a 98 gst and found an eprom out of 95 GSX at a junkyard for $200. Not a great price but their hard to come by. Does anyone know if I have to buy a GST eprom or will the gsx suffice. I don't know if the ecu has anything to do with the transfer case and such, so I'm just wondering if it will work for my car. I know it doesn't matter if they are from a manual or automatic, because they program the injector size when they burn the chip. I searched for this anwser on this site and dsmlink.com and found no definitive answer. Any help is appreciated.
Yes, it should be ok, but...
I'm pretty sure that is wrong. FWD or AWD doesn't matter, but if it's manual or auto it does. It must be the same. I'm guessing it's due to different sensors and functions of the different transmission types, but not sure.4cefedGST said:
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Re: Re: EPROM, Awd or Fwd?
Nope, this isn't correct. I don't mean it in a bad or disrespecful way, but it doesn't matter if the car is an AT or MT. All 2G's came with 450cc injectors and the T-25, so the ECU is the same for both models. AT's however have a TCU (tranny control unit) which takes care of the AT sensors, shift points, etc...Zelite5 said:
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Re: Re: Re: Re: EPROM, Awd or Fwd?
It matters on the 1G's since they got different injectors...Zelite5 said:
Really? No disrespect taken man
Re: Re: Re: Re: Re: EPROM, Awd or Fwd?
Maybe it was just 1g guys giving the wrong advice to 2g guys:dunno:. I just remember when I was looking for the EPROM for my car, that's what I found (I may have asked). Eh, whatever, now I know.Blackboost said:
It matters on the 1G's since they got different injectors...
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Talk to TMO, they build the chips, they will know.
Alright guys I emailed dsmlink to make sure because nobody was for sure. This is the answer I got.
I have a 98 GST with a 5 speed transmission and found an eprom ecu out of a 95 gsx. I'm not sure if it was from a manual or automatic though. My question is does it matter if the ecu is from a gst or gsx? And does the ecu have to be from a manual or an automatic? Any help is appreciated.
Nope. Does matter at all. FWD/AWD or manual/AT, they are all the same as far as DSMLink goes. The only difference between any of them is the speed limiter in the FWD, which we remove anyway.
I have a 98 GST with a 5 speed transmission and found an eprom ecu out of a 95 gsx. I'm not sure if it was from a manual or automatic though. My question is does it matter if the ecu is from a gst or gsx? And does the ecu have to be from a manual or an automatic? Any help is appreciated.
Nope. Does matter at all. FWD/AWD or manual/AT, they are all the same as far as DSMLink goes. The only difference between any of them is the speed limiter in the FWD, which we remove anyway.
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This info is off the tmo web page:
"Which ECUs from what models and model years can I use with my car?
If you have a turbo car, you must use an ECU from another turbo car. There is knock sensor circuitry in the turbo ECUs that is missing from the non-turbo ECUs. 1990 cars must stick to using 1990 ECUs. The factory swapped two pins on the ECU and changed the filtering in the tachometer in 1991. 1991-1994 cars may use ECUs from 1991-1994 cars. 1995-1996 cars may use 1995-1996 ECUs. 1997-1999 cars may use 1997-1999 ECUs.
Please be aware that it is not always a simple swap. There are some slight differences between FWD and AWD gearing which results in small changes in the ECU code. Also, there are EGR differences between 1990 and 1993 (in 1994, all cars have the same EGR system). Finally, the injector sizes for automatics is different from manual cars, among other things. However, if you send the ECU to us for modifications, we can change the base code to match your car, so long as the year range and turbo status are matched as mentioned above."
"Which ECUs from what models and model years can I use with my car?
If you have a turbo car, you must use an ECU from another turbo car. There is knock sensor circuitry in the turbo ECUs that is missing from the non-turbo ECUs. 1990 cars must stick to using 1990 ECUs. The factory swapped two pins on the ECU and changed the filtering in the tachometer in 1991. 1991-1994 cars may use ECUs from 1991-1994 cars. 1995-1996 cars may use 1995-1996 ECUs. 1997-1999 cars may use 1997-1999 ECUs.
Please be aware that it is not always a simple swap. There are some slight differences between FWD and AWD gearing which results in small changes in the ECU code. Also, there are EGR differences between 1990 and 1993 (in 1994, all cars have the same EGR system). Finally, the injector sizes for automatics is different from manual cars, among other things. However, if you send the ECU to us for modifications, we can change the base code to match your car, so long as the year range and turbo status are matched as mentioned above."
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if thats not a sticky then i dont know what is
thats some valuable information
Thanks for clarifying that, i guess i too was under the wrong impression
thats some valuable information
Thanks for clarifying that, i guess i too was under the wrong impression
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Just for the record...redawdturbo said:
The above mentioned info applies to 1G cars only...
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Re: Re: Re: Re: EPROM, Awd or Fwd?
I'll vouch for that they are the same ECUs
also could you imagine the PITA it would be for a A/T M/T Swap if that were true?!?!? OMFG....
I have a FWD A/T TSi with DSMlink from a 95 GSX M/TZelite5 said:
Really? No disrespect taken man
I'll vouch for that they are the same ECUs also could you imagine the PITA it would be for a A/T M/T Swap if that were true?!?!? OMFG....
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I was talking to a guy who wanted to use a m/t ecu in his auto (1g) because his auto ecu died on him. One of the things i was wondering about is how the ecu deals with the timing when the car shifts gears. On an auto you don't lift off the throttle when it shifts. I was wondering if the auto ecu is programmed for this and if the m/t ecu would be able to deal with it or if it even makes a difference. Same thing w/ a auto ecu in m/t car....when your lifting off the throttle to shift would it confuse the ecu...possibly giving poor timing advance?
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Nope... The 1G AT cars have a TCU (tranny control unit) which takes care of the shift points, etc... However a 1G MT Turbo ECU shouldn't be used on a 1G AT turbo car without adding the 450cc injectors and fuel pressure regulator from the MT car. You need both of those if you want the MT ECU to behave correctly in the AT car. On the other hand, it isn't wise to use an 1G AT Turbo ECU on a MT car since the AT ECU can't handle correctly the 450cc injectors that are on the MT cars...redawdturbo said:
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QUOTE]However a 1G MT Turbo ECU shouldn't be used on a 1G AT turbo car without adding the 450cc injectors and fuel pressure regulator from the MT car. You need both of those if you want the MT ECU to behave correctly in the AT car. On the other hand, it isn't wise to use an 1G AT Turbo ECU on a MT car since the AT ECU can't handle correctly the 450cc injectors that are on the MT cars...[/QUOTE]
So if you had an afc and 550's to tune the fuel curve yourself there wouldn't be any other drawbacks to using either ecu in either car?
So if you had an afc and 550's to tune the fuel curve yourself there wouldn't be any other drawbacks to using either ecu in either car?
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redawdturbo said:
So if you had an afc and 550's to tune the fuel curve yourself there wouldn't be any other drawbacks to using either ecu in either car? [/QUOTE]
The AT ECU has different (lets say less agressive to describe it in simple words) fuel maps than the MT ECU. You do the math...
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I wouldn't be too worried about the fuel map because you can make it as agressive as you want w/ the afc and larger injectors...it's the timing i was wondering about. I thought i read somewhere before that the auto's timing advance isn't very agressive and the ecu pulls timing way back between shifts. I understand the tcu controls the shift points but does it also control the timing advance?
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redawdturbo said:
Nope...
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only diff. between an awd and fwd would be the governed speed for the fwd
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