Hi there. does the eprom used have to be the 27c128? or can the 27c256 be used instead? reason i ask is i can get hold of the 27c256 easily, and for almost...
Couple of ?'s for you guys. Pulled from another board. These are pertaining to the 1G cars. 1: Are our MAFs ascending voltage or descending voltage types? 2:...
... Square-wave that rises in frequency as the engine takes in more air. The 1G MAS loses count somewhere around 1600hz. The 2G and 3/S MAS is supposed to be...
Guys, I uploaded an Excel file showing the differences between a DSM and GVR-4 map found at FB6E. The 21-byte map is called from D65F. I see that this area of...
From flow testing I can tell you the a 2G meter reports about 20% less air than an un-hacked 1G meter. So you should have to richen it up. If we remove the...
Does someone know how much 1 Hz count in the MAS is interpreted by the ECU as volume/min? I always wanted to know how each Hz represent on the volume side to...
The frequency output of the MAFs doesn't translate to lb/hr. lb/hr is a MASS flow rate. You're forgetting that the frequency output by the MAF is one of three...
... less air than an un-hacked 1G meter. So you should have to richen it up. If we remove the lower screen from a 1G meter it will report less air but from...
... stock. ... See, that sort of agrees with my theory: I seem to remember that on my GVR-4 (without the bottom honeycomb) I usually only got 30 Hz at idle. At...
My hacked 1G MAF/SAFC settings would go along with this. I have to add WAY more fuel in the low end, then less as RPM climbs. (ie: 50% at 1000 rpm still...
... add WAY ... 1000 rpm ... adding about ... Maybe you should try a GVR-4 chip ;) Just the opposite of my problem. With the 2g MAS, I've basically flattened...
Actually, I'm about to install a (socketed) EPROM ECU, and I *think* I can borrow a GVR-4 chip for some testing. If it changes anything, I'll let you know. ...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the dsm-ecu group. File : /Excel...
dsm-ecu@yahoogroups.com
Feb 21, 2003 7:20 am
266
Hi guys. Just joined the list today. I've been wondering what speed parts are useable in the 1G ECU's? I've got a couple files I've played around with (also...
Welcome Hop, I've been using -15 parts myself, or better. The CPU internally runs at 3 MHz, I believe, so if anyone knows how to calculate the EPROM speed from...
I will get back with a clean copy of the EA01 this week-end Jeff. Also I have in my hand a 2G EPROM ECU which I will be able to copy also this week end. I'll...
Which timing map is used under normal (ie low air temp and no knock)? I think I remember that there is one "ideal" map that is never reached. Also, let's say...
When the ecu sees knock, it starts subtracting timing right? It doesn't jump to a different table does it? Jeff Oberholtzer <keydiver@...> wrote:Jason, ...
On Wed, 5 Mar 2003 08:14:58 -0800 (PST) ... Right. There are a few other things that will subract timing, as well. Coolant temp being too high is one of them....
Hey guys, I updated the basic info file, located here: http://autos.groups.yahoo.com/group/dsm-ecu/files/Basic_Info I also made it so that it gets sent to...
Hi everyone! This site is going to take a while to absorb, especially since I don't know anything about this :). That sort of thing has never stopped me...
I think, in the bottom of my closet lies a Motorola HC11 developers kit. I may actually have to dig it out and power the thing up. I know it has at least 1...
... Yes it is HC11 based but it also has enhanced instructions that the HC11 language does not have. I think there are 6 or 8 instructions we have not been...
You don't need someone internal to Mitsu to figure out what those special instructions do. Just start going through the code, disassembling and figuring out...
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