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Search: Posts Made By: Calum
Forum: Technical Q & A 05-28-2008, 08:31 AM
Replies: 1,087
Views: 139,946
Posted By Calum
I worked my way through undergrad as a IBM...

I worked my way through undergrad as a IBM system/390 night operator.

I'll hack together a little vb.net utility. With MS Express its free and easy to do little stuff like this.
Forum: Technical Q & A 05-27-2008, 02:20 PM
Replies: 1,087
Views: 139,946
Posted By Calum
Sorry if this is old hat, but I'm way behind on...

Sorry if this is old hat, but I'm way behind on this thread and there's just too much to read. :P

Is there a windows tool for dumping the memory from a stock ecu yet? I'd rather not do the Linux...
Forum: Technical Q & A 04-15-2008, 08:58 AM
Replies: 1,087
Views: 139,946
Posted By Calum
dang it, double post. Sorry!

dang it, double post. Sorry!
Forum: Technical Q & A 04-15-2008, 08:56 AM
Replies: 1,087
Views: 139,946
Posted By Calum
Some multi-meters can actually. Fluke has made...

Some multi-meters can actually. Fluke has made models that can for years, and some of the cheap chinese meters picked up this feature (lucky for us cheapskates).
...
Forum: Technical Q & A 03-27-2008, 02:01 PM
Replies: 1,087
Views: 139,946
Posted By Calum
Round 2! I trimmed the top edge about 4mm. ...

Round 2! I trimmed the top edge about 4mm. Bottom, left, and right edges are in the same positions.

http://www.calumsult.com/calumsu/disassembler/SVX/svx-rt%20size%20check.pdf

Thanks!
Forum: Technical Q & A 03-27-2008, 08:25 AM
Replies: 1,087
Views: 139,946
Posted By Calum
No, excellent that I've only got to make a small...

No, excellent that I've only got to make a small change. :)
Forum: Technical Q & A 03-27-2008, 07:16 AM
Replies: 1,087
Views: 139,946
Posted By Calum
Excellent!

Excellent!
Forum: Technical Q & A 03-26-2008, 11:36 PM
Replies: 1,087
Views: 139,946
Posted By Calum
I meant dimensions in the actual ecu. When you...

I meant dimensions in the actual ecu. When you get a chance, can you print this off (make sure to print 1:1 ration, not fit to page) and verify it fits inside the ecu? The 28-pin socket-connector...
Forum: Technical Q & A 03-26-2008, 12:06 PM
Replies: 1,087
Views: 139,946
Posted By Calum
I'll take a picture of the dimensions I'm...

I'll take a picture of the dimensions I'm referring to.

Yea, its a potentiometer. Thats actually part of the factory Nissan ecu, the wires go under the daughterboard. You turn the pot on the ecu...
Forum: Technical Q & A 03-26-2008, 09:40 AM
Replies: 1,087
Views: 139,946
Posted By Calum
Hey b3lha, can you make the following...

Hey b3lha, can you make the following measurements for me with your ecu?

From the center of the 27C1028 pin #14 (so bottom left), how far is it from there to-

-the board edge directly to the...
Forum: Technical Q & A 03-12-2008, 03:50 PM
Replies: 1,087
Views: 139,946
Posted By Calum
Looks good to me. One last suggestion, if...

Looks good to me. One last suggestion, if possible try to verify you've got enough space around each of the rom chips to use this low cost ZIF socket-
...
Forum: Technical Q & A 03-12-2008, 08:12 AM
Replies: 1,087
Views: 139,946
Posted By Calum
No problem, will do.

No problem, will do.
Forum: Technical Q & A 03-11-2008, 08:40 AM
Replies: 1,087
Views: 139,946
Posted By Calum
Whats the dimensions of your board? I still...

Whats the dimensions of your board? I still don't have an SVX ecu, but I've got a EJ20 ecu and it would be handy if the board would physically fit in both. You've probably done this, but if you...
Forum: Technical Q & A 02-28-2008, 10:57 PM
Replies: 1,087
Views: 139,946
Posted By Calum
I did a little digging, and found a copy of a '92...

I did a little digging, and found a copy of a '92 Legacy FSM (real, not mitchell manual, etc). Its actually got a nice series of pages describing the pulse pattern used by the ecu from the cam and...
Forum: Technical Q & A 02-28-2008, 08:06 PM
Replies: 1,087
Views: 139,946
Posted By Calum
The only reason for a stock car is you really...

The only reason for a stock car is you really need to be able to determine if a problem is something in the hardware, or just a mechanical problem. With a stockish immaculate car owned by the type...
Forum: Technical Q & A 02-28-2008, 09:05 AM
Replies: 1,087
Views: 139,946
Posted By Calum
Maybe. To answer the above question- there's...

Maybe.

To answer the above question- there's two parts to working with a factory ecu. First is having the necessary hardware to actually make changes, so for example on older ecus installing a...
Forum: Technical Q & A 02-27-2008, 08:56 AM
Replies: 1,087
Views: 139,946
Posted By Calum
If your really interested in a bench simulator...

If your really interested in a bench simulator I've got a board for doing just that. Most of the sensors are dead easy (either resistance or voltage), but the tough part is getting the correct pulse...
Forum: Technical Q & A 02-26-2008, 09:22 AM
Replies: 1,087
Views: 139,946
Posted By Calum
If there was interest I could roll a version of...

If there was interest I could roll a version of my 'Realtime' board for the early Subbie ecus, but I don't think there is really a market. The Nissan and Subaru ECUs are so similar it really...
Forum: Technical Q & A 12-18-2007, 09:30 AM
Replies: 1,087
Views: 139,946
Posted By Calum
You know what would be nice is to have all the...

You know what would be nice is to have all the known bit fields in the disassembler and let it autocomment when the fields are being modified.
Forum: Technical Q & A 12-17-2007, 09:22 PM
Replies: 1,087
Views: 139,946
Posted By Calum
Thats a good question. The problem is that the...

Thats a good question. The problem is that the 77xx series had a pretty long run as microcontrollers are sometimes apt to do (its actually still in production btw, nevermind the EOL on it), but...
Forum: Technical Q & A 12-11-2007, 11:05 PM
Replies: 1,087
Views: 139,946
Posted By Calum
Your patents in pdf form should be attached. ...

Your patents in pdf form should be attached. Pre-emptive your welcome too in case I don't wander across this forum for another week or two. :)

If you use it, please make a donation, its really...
Forum: Technical Q & A 11-12-2007, 10:31 AM
Replies: 1,087
Views: 139,946
Posted By Calum
Yea, the Nissan ecu works the same way. When you...

Yea, the Nissan ecu works the same way. When you change maf sensor you change the VQ table (i.e. look-up table for maf voltage to some unitless mass flow number). Whats handy is you can use the...
Forum: Technical Q & A 11-06-2007, 03:46 PM
Replies: 1,087
Views: 139,946
Posted By Calum
No, it doesn't prevent anything if the car always...

No, it doesn't prevent anything if the car always runs at one boost setting. If you always run the car at 10 psi, and tune the last column with that boost setting, your good to go.

For cars that...
Forum: Technical Q & A 11-06-2007, 01:40 PM
Replies: 1,087
Views: 139,946
Posted By Calum
Depending on how the ecu works, thats not really...

Depending on how the ecu works, thats not really a bad thing and you can take advantage of it. Some ecus work with values in the fuel table directly being pulsewidths, and in that case if you run...
Forum: Technical Q & A 11-01-2007, 08:59 AM
Replies: 1,087
Views: 139,946
Posted By Calum
It looks pretty dang similar to the Nissan (also...

It looks pretty dang similar to the Nissan (also JECS) ecus. On the older models (same era as SVX) when you translate the table from a multiplier to a target AFR value it ends up at under load not...
Showing results 1 to 25 of 43

 
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