Okay... Here's the setup...
2000 Si w/ b16a2
p28 ECU
turbo
rc 440's
home made Xover Harness
UberData for creating the ROM
RomMax burner
AMD 27c256 chip

Now, I think i'm burning something wrong... Because the other night after 4 tries, the car ran KICKASS, but still rich... And I have a phantom CEL... I just went and soldered a switch into J11... If i switch it off, and go to the OEM chip, no CEL, works normal, but wont start due to the RC 440's.. I thought maybe I had the capacitors in backwards, so i desoldered them, and flipped them around, and resoldered them... Same thing...

Car just doesnt want to start, and if I can get it to start, it skips and runs PIG RICH... I tried it with no capacitors and it wasn't right either... I still have the 1k resistor inline...

Am I burning my chip incorrectly? I'm using the ROMMax software on my work PC that we use for burning ROM's every now and then... Its an older DOS based software... Here's the steps I take...

Run the software
Install EPROM into burner
Load BIN File
Auto Detect 27c256 chip
Run Blank Check to make sure UV Eraser worked
Run Program
Run Verify
Exit program
Remove Chip
turn off burner

Does the burner have to be turned off before I pull the chip out? If I try to load the RomMax software with the chip in the burner, it won't load the software... Says to remove the chip before starting the software. I have a BIN file that I KNOW works good, because it ran GREAT the other night, but it just seems like it must not be burning correctly or something like that...

Help me out guys... and I hope I posted this in the right spot

 

bump... i think its the burning... I have spoken with another chipper, and they say i'm doing everything right...

 

here's a picture of the switch i put inline to try to get some more views on this thing...

 

the capacitors are probably fine. if you have hte phantom cel that puts you in limp mode, as has been posted in the uberdata thread like 50x by me, you need to resolder all the connections. the ones to the smlal chip and hte big socket are gnerally the problem. go over them and get lots of solder on there and then try it. also ditch the 27256 chip and get a29256
sam

 

also its VERY hard to diagnose your problemw hen you are using some oldschool burner. id suggest prog studio + batronix burner for a sure working thing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94goldjungsr &raquo;</TD></TR><TR><TD CLASS="quote">the capacitors are probably fine. if you have hte phantom cel that puts you in limp mode, as has been posted in the uberdata thread like 50x by me, you need to resolder all the connections. the ones to the smlal chip and hte big socket are gnerally the problem. go over them and get lots of solder on there and then try it. also ditch the 27256 chip and get a29256
sam</TD></TR></TABLE>

All of my connections look REALLY good, but i'll go all over them again, and make sure they actually penetrate well.... But the thing is, how come it worked GREAT with 1 burn, but then I did another and it doesn't anymore?

 

The capacitors that youre using are ceramic. These are not polarity sensitive, only the electrolytic style are (round cylinder). So orientation is not an issue with those.
As far as it running pig rich - A few questions:
1. What is your fuel pressure at?
2. What does your fuel map in uberdata look like?
I am not an expert tuner or anything, but I would be glad to look at your fuel map to see what it looks like. I am running 450's and Uberdata, and do not have these issues.
As far as your phantom cell, as 94goldjungsr stated, check sour saudering job. A cold sauder joint may be your issue. (Will usually look somewhat gray and lumpy instead of smooth and silver). Another issue may be your harness? Did you sauder all of the connections? Some of the crimp style connectors can cause variations (very minor, but large to the ECU) in the resistance of the line. This would cause some fairly large swings in the readings that ECU is getting.

My 2 coppers tossed in anyways!
HTH

 

are you still using the LS map?


Rob

 

So you burned it once and it worked great..and then later on...you re-burn it and it works like sh-t?

It is more than likely and error in the burn. Beacuse if it was an error in the solder, it wouldn't have worked the first time. Is it verifying the data? Take the chip you just burned, and read it. Then see if the bin file looks the same as you expected it to in uberdata.

If you stil need help, i'm sure some h-t members here can burn you the chip.

Danny

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rjardy &raquo;</TD></TR><TR><TD CLASS="quote">are you still using the LS map?


Rob</TD></TR></TABLE>

That is what I based my tune on ... I got the p74-85 bin from pgmfi.org, and tuned off of that one.

 

every joint is soldered on the harness... But there is no CEL with the switch flipped to the OEM chip, thats why i'm saying not the harness...

my fuel pressure is stock... stock pump, stock FPR

Ignition Map Lo:


Ignition Map Hi:


Fuel Map Lo:


Fuel Map Hi:


Those are the maps I had when the car was running STRONG, but VERY rich...

 

I'm running off a p72 GSR map... I based it off the stockgsr.bin that came with UberData then added the boost, etc...

 

Those maps look quite rich to me based upon 440cc injectors. Just for the sake of testing, what you could do is edit your idle rpm/start region. So take from 1500rpm down (to 500 region, low map) and from 17.99 to 25 in/Hg block, and drop it about 4/5 points (block select this region, and type in -4/5 in the addition block) Dont go running around the block with this, as it is only a test edit to see how it starts. That is appoximately what I have mine set at.

hope that works!

 

id try a 29c256 i really dislike those 27's

 

also try my LS map

http://www.orbit3d.com/car/dyno8.bin i think if not check the uberdata thread its on like page 18

 

I cant try that tonight... Open Downpipe... Neighbors will get pissed... lol...

But when I DID get it started with a bad map, i could rev it, but I could hear a skip, almost like a misfire, but it would eventually clear out...

Like I said, it almost seems like it doesn't like being cold...

Now 1 other thing..&gt; When I was soldering my socket, I accidentally hit the barometric pressure sensor with the iron and made some melts on it... nothing too severe, but it marked it... that wouldn't have anything would it? b/c that would throw a BAR code... right?

 

oh yeah, 1 more thing... does the same thing without a chip in the socket as it does with the chip in the socket... As far as the CEL goes I mean... CEL comes on, and after 4 second delay when fuel pump and relays kick off, CEL stays on... doesnt flash off and on, just stays on...

 

is it in limp mode? if so obviously its going ot idle like trash... it sounds like you are in limp mode for whatever reason. anyone local to you who has burner you know functions?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94goldjungsr &raquo;</TD></TR><TR><TD CLASS="quote">is it in limp mode? if so obviously its going ot idle like trash... it sounds like you are in limp mode for whatever reason. anyone local to you who has burner you know functions?</TD></TR></TABLE>

EDIT: I guess it could be considered limp mode...

Yeah, I'm gonna try that tomorrow... Now if only I could find another chip supplier locally...

Will ANY 27c256 chip work? I tried a m27c256b that I had at work for some circuit boards, and that wouldn't work... But I know a guy that programs dodge ECU's, and he uses 27c256's... he was gonna program my bins for me, but he sent me an e-mail a little while ago saying that they were wrong, and that they were 32.8k and need to be 32k... What does that mean?

 

i dont know about that that sounds like crazy talk.

you need to get a reliable burner and burn the file on the chip. i still suggest the 29c256. its very hard for us to diagnose this stuff or help you when the entire basis of chip burning is confounding due to your using an untried / tested burner / software.

 

If it does the same thing with/without chip in socket, then it is reverting to the backup processor (limp mode) where it only reads TDC and TPS.
I would be happy to burn a chip for you, but not exactly in your neck of the woods. However, if you would like me to do so, just send me a blank chip and I will burn your bin and shoot it back. As an alternative, some mom'n'pop computer shops still have e(e)prom writers for writing system bios. You could possibly take your blank 27 and your bin to one of these and have them burn it for you (they would probably charge you, I wont, but you have the mail system delay with me.)
On a side note, your dos based software - what is your host OS? If it is 2000/XP, it does not deal very well with interrupts driven at a port level, vs. calls made at an application level. Make a DOS boot diskette and try from there (*note, if you are 2k or XP, and your drives are ntfs, or if the dos disk to older, even fat32, you will not be able to read data off of your c: partition, or any partition formatted thus.)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ScrapinSi &raquo;</TD></TR><TR><TD CLASS="quote">

he was gonna program my bins for me, but he sent me an e-mail a little while ago saying that they were wrong, and that they were 32.8k and need to be 32k... What does that mean? </TD></TR></TABLE>

Your bin files should only be 32k. Anything different, and something is wrong.

 

the base OS is DOS... Its a P-90 that is used only for burning....

There is also a ChipLab EPROM burner on this. I tried using that burner, but it wouldn't load the UberData BIN files... It said "Unknown type" or something like that...

My buddy made a mistake... It was 32k... his mail program reported it wrong

 

EDIT: Nevermind, solder joints were fine... Thats not the problem

Something else i noticed... If I use the jumper connector to pull a code, with the switch on or off, the CEL just stays on constantly... But if i pull the connector out, CEL only stays on constantly at the external chip, but reacts normal on the stock chip...

I hope my guy can burn me a chip like ASAP...

 

im so depressed... tried burning a new prom again on my burner, and nothing...

Gotta wait till tonight to get the other programs from my dodge guy...