FRAM NVRAM Board

[Dylan]

Also the Pulsar ECU's were probably a 1227808? VP Holden ran the same.

[antus]

Low impedance 1 injector was a factory configuration. It is supported with 12p. 1 big injector. Im not sure about current limiting but i know one of those wont cook your ecm.

[HQ355]

Off topic but how was clipsal Ant ? I miss not living in Adelaide when the 500 is on

[antus]

Very hot! But also good times, good variety of racing we should keep this on topic though.

[BennVenn]

Morning everyone,

Has there been any reverse engineering of the '808? Either firmware or hardware? Was 12p hand coded or modified stock code?

I was expecting the injector flow values in the TBI code to be 4 times that of the PFI. Or is that value total combined for all 4 injectors?

The $54 bins look ideal for the beginner but not sure what all the 'malfunction flags' indicate. Is there a glossary of terms?

Thanks everyone for their input so far! !

[Gareth]

Try here for golssary

http://pcmhacking.net/forums/viewtopic. ... 2061#p2061

[BennVenn]

Thanks Biggvl, they're more generic terms. The stuff in tunerpro is vastly different. All good. Ill eventually run 12p which is very well documented.

And a big thank you to everyone that has made this site and its knowledge possible! You have made a high end aftermarket realtime ecu accessable for a fraction of the cost of an off the shelf version.

[antus]

Yep we think its good stuff 11P and 12P are fully reverse engineered by vl400 and are well understood. Vl400's source for 12p does exist but is not public. To prevent clones and compatability problems. With extra inputs in the datastream and flex outputs functionality can be extended for most purposes without changing code. There is also scheduling of data packet transmission for telementary.

Base fuelling for cylinders is set by netres then injrate is for injector size. In 12p this is because there is a fuel and spark controller IC which does the delivery of the calculated fuel and spark in hardware. 11P is slightly different hardware but the logic is the same.

DTCs are detected errors usually hardware but can be triggered by gross misconfiguration. When a code triggers, the ecu ignores the input and uses backup logic to cope as best it can. Theres 2 config items for most dtcs. One to ignore the dtc (mostly you dont want to set this) and one to not light CEL which is mostly what you want when you have reasons to delete a circuit. That is you want the ecu to use backup logic but its expected and normal and keep the cel for unexpected errors.

[BennVenn]

Is there a way to remove the EPROM without out causing a big mess? Or should I get the side cutters out? I'm assuming if they wave soldered them in there, the caddy should be temperature resistant enough to remove them? Edit: Preheat to 270 and lift it out, simple!

[antus]

or, more destructive, but cut the legs and solder a socket on top.