What's Eprom

[JBDdsmer610]

I was wondering whats so great about an eprom ecu is it better than a non eprom ecu

 

[miden]

I was wondering whats so great about an eprom ecu is it better than a non eprom ecu

EEPROM is an acronym:

Electrically
Erasable
Read
Only
Memory

It's an expansion to the regular ECU, one that can be rewritten and modified. If you know what you're doing, or buy products from people who know what they're doing, you can change the operation of the stock ECU. For example with the right program installed on an EEPROM chip, you can compensate for larger injectors. Or limit the engine RPM based on clutch engagement (stutterbox...). It's really pretty powerful. It's like changing the programming for your car.

-M

 

[reeper]

eprom ecu has it were you are able to remove the chip and have it burned to your new settings, where as a non eprom the Chip is permaitly attached to the ecu

 

[titogs95]

Just in case you want to know if you have E-prom. read here


It is good to have an Eprom becasue you can control the Ecu directly with DSmchips or Dsmlink; instead of remplacing your computer with an expensive AEM ECU....

 

[GVR4592]

I was wondering whats so great about an eprom ecu is it better than a non eprom ecu

http://tmo.com/faq/glossary.htm#eprom

 

[JBDdsmer610]

cool thanks alot....now i need to find an eprom ecu cheap before i do my swap

 

[DimondStar]

This thread is old but this is the only one that explains what an eprom is. Basically an eprom is for a

higher modified car that needs more air/fuel to compensate boost. How do you change the setting

on the eprom? through dsmlink??. Do you need a dsmlink to run an eprom? My GSX is broken and

getting built, but now need a tuning device to tune the high boost that I will be running.

Thanks in advance.

 

[MrVito]

DSMLink and other programs can be used to change the settings on an EPROM ECU. DSMLink uses a "socketed" EPROM ECU, in other words, the spot where one of the chips would normally sit on the circuit board of the ECU is replaced with a ZIF (Zero Insertion Force) socket, so that new chips can be easily placed on the ecu without further soldering. I am very much a newb at DSM's/VR4's, but have a lot of experience in building and tuning cars, both import and domestic, as far as I can see, the DSM Link setup is the best bang for the buck as far as tuning is concerned for a mildly/mid-range modified car is concerned.

Also, if I am wrong on any of this, PLEASE, someone correct me.

 

[JusMX141]

EPROM = Erasable Programmable Read-Only Memory

In any ECU that features an EPROM chip, the chip can be removed and burnt with specific operation data....you don't actually need to swap chips to get features like injector compensation and such- your chip can be reburnt with that data.

Socketing the chip simply makes the chip easier to remove and burn when you're ready to change your settings. I've seen EPROM sockets that had a lead and were mounted externally, outside of the ECU cover, so you could change data without pulling the ECU and removing the cover.

DSMLink is an EPROM chip that communicates with a specific computer program via the OBD1 and OBD2 data port on your car. It is basically an EPROM chip that is tunable and burnable on-the-fly. Your board doesn't necessarily have to be socketed for DSMLink to function....the DSMLink chip can be soldered directly to the board, but it would make removing the chip a real hassle when it comes time to sell the car or if you want to change ECU's at some point. Socketing can be done reasonably by virtually any electonics store.

 

[jrohner]

You can buy a chip burner for $85 bucks from moates.net or you can find different burners cheaper on ebay. I think the best tuning is with an eprom emulator which allows you to tune with your laptop hooked up to it with a usb cable; on a 1g you can tune with the car running and even switch bin files. On my 2g it seems that I have to shut the engine off to tune the fuel or timing maps or the relays click and the car dies. Tuner Pro is an amazing program for tuning with an emulator or burner and you can have a baseline tune ready to run in just a few minutes. You have the maps right in front of you, no tuning with percentages or sliders to fudge the stock maps, making it a very powerful and easy to use tuning solution.

 

[DimondStar]

ok I see. So are those chips burnt on a program on your computer. Must be?? So I i went dsm link I wouldn't need an other eprom because the dsmlink acts like on. Also whats more affective and easy tunerpro or dsmlink? Thanks!

 

[JusMX141]

All previous versions of DSMLink require an EPROM ECU because the DSMLink chip plugs into the EPROM's location. You won't need any additional hardware.

Only the newest version, ECMLink, will operate without an EPROM ECU if you purchase additional accessories.

 

[92ts1]

DSMLink is what I have. Easy to work with and my car with 1000cc injectors idles and drives like stock. DSMLink IS coming out with a new version of it that you can use without and EEPROM. It is still in the testing stages, the main thread is on link forums.

Also, the guys there and on the forum are extremely helpful and tell you what you need to do to get your car tuned correctly..

 

[delta448]

Only the newest version, ECMLink, will operate without an EPROM ECU if you purchase additional accessories.

And only if you have a 1G.
The 2G guys will still need an eprom ecu.

 

[XLR8]

And only if you have a 1G.
The 2G guys will still need an eprom ecu.

This is good to know. I have not read the entire ECMLink wiki yet.

 

[DimondStar]

Ok i'll wait until the new dsmlink come out and buy a cheep lap top. Thanks!

BTW when burning a new eprom chip is that done by computer burner?

 

[steve]

Ok i'll wait until the new dsmlink come out and buy a cheep lap top. Thanks!

BTW when burning a new eprom chip is that done by computer burner?

DSMLink replaces the EPROM chip with their own hardware that allows changing the software parameters from your laptop so no chip burning is required. It has a type of EEPROM (see above) called flash memory to store the changes you make.

If you make your own chips rather than buy DSMLink you would used a EPROM burner to write them and then put the chip into the ECU.

There are also EPROM emulators like the Moats Ostrich that provide battery powered RAM or Flash memory and an interface to read and write it on the fly that you can plug into the EPROM ECU. Those allow you to skip the chip burning every time you change something.