Resolved 90 EPROM ECU?

[Chris1990gsx]

I have a 1990 Eclipse GSX. I'm looking to upgrade to EPROM. I was wondering if anyone know of any good deals to buy it at.


Thanks

 

[92AWDHX40]

look on ebay, classifieds, for good deals or place a wtb add.

 

[My1GLaser]

hmmm, your ecu should be an eprom if it is the original one...have you checked it?

 

[bryanwheat]

hmmm, your ecu should be an eprom if it is the original one...have you checked it?

Incorrect. Not all 90 turbo ECU's are EPROM, just like not all 91-94 turbo ECU's are EPROM.

 

[Bud92gsx]

Incorrect. Not all 90 turbo ECU's are EPROM, just like not all 91-94 turbo ECU's are EPROM.

^^^^^^^^^This!!


But op, you should get out your ECU, open it up, and see if it's an EPROM.

EPROM ECU just makes it easier to either go with a chip, or DSMLink.

 

[fonzi90Tsi]

Bryan is right. I have a 90 with stock ecu and no eprom .

Thing that sucks bro is we 90s have to get a 90 eprom. We cant use the 91+ UNLESD ypu wanna do the lil comversion for the tach.

 

[Bud92gsx]

^It's more simple now..It only takes swapping 2 pins.

 

[fonzi90Tsi]

Really? Guess the search function should be modified!

The two main threads that came uo for the 90 to 91+ swao for me was the ones saying that you had to change the tr unit and such.

No when I searched the 91+ cars using the 90 ecu's the pin swap came up so I thought it was different.

Can anyone else confirm this?^^

 

[Bud92gsx]

Pin 6 and 14 if i'm not mistaken. I Probably am tho..

And I think your right on the search function needs to be revamped..

 

[My1GLaser]

You swap pins 6 & 14. I ran a 91+ in my 90 Laser and a 90 ECU in my 92. Both 90s were eprom, so I figured...

 

[fonzi90Tsi]

Great thanks guys.

OP so basically grab any 1g eprom. just make dure if its the 91+ going int your car to s-ap pins 6-14 at the ecu. There is a writeup somewhere on here about how to swap the pins.

 

[Bud92gsx]

Ecu Eclipse Talon Laser Galant 3000GT Stealth ECU ID Reference

Pins DSM ECU and TCU Pinouts - DSMPurity.net

 

[Chris1990gsx]

I have a 1990 gsx im loooking to up grade to Eprom i was wondering if anyone know of anygood deals to buy it at.


Thanks

Yeah i took it out and saw no eprom

 

[fonzi90Tsi]

That was my reaction as well. ^^

 

[donniekak]

^It's more simple now..It only takes swapping 2 pins.

You have to swap 6&14 to get the car to run properly. A small board must be added to a 91-94,ecu for the tach to work properly in a 90.

 

[Chris1990gsx]

That was my reaction as well. ^^

Yeah i figured it would have just been to easy to just get a tune. Now gonna have to spend more money to get it running right.

 

[steve]

You have to swap 6&14 to get the car to run properly. A small board must be added to a 91-94,ecu for the tach to work properly in a 90.

Keydiver isn't making the tach adapters anymore but there may still be some floating around. (I have a couple left) It's the simplest way to deal with the incompatibility between the 90 gauge cluster and the 91+ ECUs.

If you want you tach to work right it is more involved than swapping pin 6 and 14.

 

[fonzi90Tsi]

Donnie explain a little.more ###.

We.swapped a 94 ecu into my car yesterday and it ran fine. Even got a tach signal they were just a bit off.

Steve so I was right in mu earlier post about having to swap the tr units etc.

Bleh! I thought it was gonna be easy.

 

[Bud92gsx]

Keydiver isn't making the tach adapters anymore but there may still be some floating around. (I have a couple left) It's the simplest way to deal with the incompatibility between the 90 gauge cluster and the 91+ ECUs.

If you want you tach to work right it is more involved than swapping pin 6 and 14.

You have to swap 6&14 to get the car to run properly. A small board must be added to a 91-94,ecu for the tach to work properly in a 90.

Steve you should really do a write up on this..Everytime I see this come up..It's always swap those pins..Unless I forget to recheck the thread.

 

[steve]

Steve you should really do a write up on this..Everytime I see this come up..It's always swap those pins..Unless I forget to recheck the thread.

I've done many write ups on this. Please start paying attention

Just remember you must swap 6 and 14 whenever you mix 90 and 91+ and 90 cars need tach work with 91+ ECUs.

 

[Bud92gsx]

I know the 6 and 14. But the other part I never caught..Pay attention I know.

 

[fonzi90Tsi]

Thats where I got my info from. Steves writeup.

 

[donniekak]

Donnie explain a little.more ###.

We.swapped a 94 ecu into my car yesterday and it ran fine. Even got a tach signal they were just a bit off.

Steve so I was right in mu earlier post about having to swap the tr units etc.

Bleh! I thought it was gonna be easy.

Rev the car up, and watch the tach dip toward 0.

 

[Chris1990gsx]

Thinking about buying this 1990 DSM, GSX, Talon, Laser EPROM ECU | eBay