do our ECU's or ECM's have EPROM?

 

YEs. Computers aren't my thing, but I believe that's the actual chip that is replaced when you upgrade to a JWT, Z1, GMS etc chip.

 

hey thanks for responding so quick i really needed it...I love this forum haha

 

Like Mr.91zxtt says, it's the brains in the ECU. The chip it's self costs only $1.50 but the program on it is what reads and makes changes to your engine. Put a scoket in your ECU and you can swap EPROM's with different programs.

 

Hey, Zgringo,...what's with the Mr.91zxtt. Come on, we're not that formal here. My teacher would call me Mr. Bartley when I was misbehaving in school. Ahhhhhhh..the memories. You can relax.

 

OKaa, then I can call the buttheads Mr.? If I remember my teacher did the same.

 

Do you know where you can buy just the EEPROMs? Seems like every one wants you to buy the whole ECU.

 

GMS, or iirc, chip ginn motorsports, they have a website and sell on ebay, $60 or so. you buy their eprom and then install the socket yourself or take the ecu to a tv repair shop to get it soldered in.

 

CC hit the nail right on the head...but you also have another choice. Learn to do it yourself and have full control over your car. There's a site that has some neet guys that be more than happy to help you get started. I migh also add go to this site and start reading up un the subject so you kinda know what there talking about.

http://cherrypicker.tripod.com/id10.html

After you get a basic understanding then go here and ask for help.

http://forum.ztechz.net/

 

Nice link.... I've searched numerous times for books or other info on this subject. Not just for cars, but also for automation and little machines.

Be careful tho, I seem to remember reading where evan is also an expert at this.

 

So true..so true. The all knowing, all seeing, demi car God thats aquired all the knowledge on earth in 1-2 years. What confuses me is the web was setup to search and find information, but a few condemn you if you dare use any search engine to find things your looking for.

 

Kick ***, this is exactly what I was looking for. I always knew it was a simple mod, I just wasnt sure what it consisted of. The programming is always something I've wanted to do, I'm just not sure how effective you can be without the wide band O2 to monitor the effects of your changes.

 

I didn't even know what a wideband O2 was before reading that writeup. Now I know it can just be a more accurate O2 sensor from a Honda or .........

Frosty, read the section on "air-fuel-ratio".

What I do believe, don't know for sure, but I'm definitely going to look into, is that getting accurate afr's off of wideband O2 sensors is just an issue of resolution of the equipment reading the voltage signal. To re-iterate, our ecu's and the cheap afr gages might take reading at X.X resolution. If I use a high quality digital multimeter, that can provide an accurate resolution of say X.XXX, I should be able to reliably convert that voltage reading to actual afr's....

 

I think but never checked it with a multimeter, the narrow band measures 0-1 volt, and the wide band 0-5 volts. I use dual wide band o2's an dual EGT's.