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Search: Posts Made By: duxthe1
Forum: Mercedes-Benz Performance Paddock 11-15-2019, 09:00 PM
Replies: 26
Views: 1,189
Posted By duxthe1
I got around to doing a little testing on a...

I got around to doing a little testing on a running engine. I have a 103 module with the 973 eprom that's my test mule so I plugged it in and warmed up the engine. The full load switch and idle...
Forum: Mercedes-Benz Performance Paddock 11-10-2019, 08:30 PM
Replies: 26
Views: 1,189
Posted By duxthe1
I wouldn't ask anybody to chip in though at some...

I wouldn't ask anybody to chip in though at some point I'll want to enlist a few testers.:wink3: My goals here aren't so much a hp number but getting some amount of control over the EHA.

I was...
Forum: Tech Help 11-08-2019, 02:29 AM
Replies: 4
Views: 3,449
Posted By duxthe1
Yes

Yes
Forum: Tech Help 11-05-2019, 09:04 PM
Replies: 2
Views: 155
Posted By duxthe1
Take the bumper off

Take the bumper off
Forum: Mercedes-Benz Performance Paddock 11-01-2019, 11:52 PM
Replies: 26
Views: 1,189
Posted By duxthe1
Not much to report. Snowed earlier in the week...

Not much to report. Snowed earlier in the week and the coupe hasn't been driven. In the meanwhile another ten 27C256 chips arrived as well as a UV eprom eraser. I've got all of my resistor values...
Forum: Mercedes-Benz Performance Paddock 10-26-2019, 01:21 AM
Replies: 26
Views: 1,189
Posted By duxthe1
Early update, but its worth it.:D First off...

Early update, but its worth it.:D

First off I enabled the secondary block of code that uses the same trim resistor enable byte. Test drive didn't reveal anything out of the ordinary, in terms of...
Forum: Mercedes-Benz Performance Paddock 10-24-2019, 07:20 PM
Replies: 26
Views: 1,189
Posted By duxthe1
I've finally managed to score another CIS module...

I've finally managed to score another CIS module compatible with my 300CE. Lowballing all of the vendors on ebay with the "make an offer" option payed off. These 55 pin modules never go bad and at...
Forum: Mercedes-Benz Performance Paddock 10-18-2019, 08:45 PM
Replies: 26
Views: 1,189
Posted By duxthe1
Another week passed and not too much progress to...

Another week passed and not too much progress to report. I received my 8051/8052 microcontroller book, though not in time to be out of town last weekend. Would have been great for several hours of...
Forum: Mercedes-Benz Performance Paddock 10-08-2019, 09:31 PM
Replies: 26
Views: 1,189
Posted By duxthe1
Updating a bit early but its been a fruitful few...

Updating a bit early but its been a fruitful few days.

I've found a better 8051 simulator, that includes monitoring of the entire 256 bytes of internal memory and 64K of external memory. There...
Forum: Mercedes-Benz Performance Paddock 10-08-2019, 09:06 PM
Replies: 9
Views: 424
Posted By duxthe1
I don't remember exactly, but my best guess at...

I don't remember exactly, but my best guess at remembering is sometime in 1991. I'm not aware of a manual but I'm sure its buried in WIS somewhere. I will advise you however, its not even worth the...
Forum: Mercedes-Benz Performance Paddock 10-04-2019, 09:27 PM
Replies: 26
Views: 1,189
Posted By duxthe1
Another weekly progress report... I've dug...

Another weekly progress report...

I've dug though some old wiring and realized I had a 55 pin CIS module harness with about 20" of wiring with the connector. With the harness connected, a bit of...
Forum: Mercedes-Benz Performance Paddock 10-03-2019, 08:39 PM
Replies: 9
Views: 424
Posted By duxthe1
Its the piston applying the clutches in the...

Its the piston applying the clutches in the t-case that leaks, overfilling the case. The early cases had a problem where the piston cocked in its bore resulting in the internal leak. There was a...
Forum: Mercedes-Benz Performance Paddock 09-28-2019, 12:22 AM
Replies: 26
Views: 1,189
Posted By duxthe1
Another week passed and more progress made. I...

Another week passed and more progress made. I found a decent 8051 emulator that can step through the code instruction by instruction and watch some of what's happening. Its helped me figure out a...
Forum: Mercedes-Benz Performance Paddock 09-21-2019, 02:07 AM
Replies: 26
Views: 1,189
Posted By duxthe1
Most ICs on these boards only have a bosch...

Most ICs on these boards only have a bosch number, several of which I have not been able to cross reference.

I really haven't done anything with the 454's program. My coupe uses the later single...
Forum: Mercedes-Benz Performance Paddock 09-20-2019, 11:01 PM
Replies: 26
Views: 1,189
Posted By duxthe1
Over the past week a small bit of progress was...

Over the past week a small bit of progress was made.

I found a disassembler tool to convert the hex instructions back into assembler using the 8051 instruction set. Given that the bosch part...
Forum: Mercedes-Benz Performance Paddock 09-15-2019, 12:37 AM
Replies: 26
Views: 1,189
Posted By duxthe1
I noticed the bosch number too. Odd thing is...

I noticed the bosch number too. Odd thing is that it isn't the module's part# or the EPROM's part#, nor any of the bosch numbers silkscreened on the circuit board.

I've played around...
Forum: Mercedes-Benz Performance Paddock 09-15-2019, 12:27 AM
Replies: 26
Views: 1,189
Posted By duxthe1
If I was going to do the standalone route, I'd go...

If I was going to do the standalone route, I'd go with an MS3. Going standalone and keeping CIS.... I just don't think I could bring myself to do it. While tuning the CIS module is definitely the...
Forum: Mercedes-Benz Performance Paddock 09-14-2019, 05:58 PM
Replies: 26
Views: 1,189
Posted By duxthe1
Pulling a harness from the junkyard to use to...

Pulling a harness from the junkyard to use to build a test bench is high on the to-do list. One of the most pressing tasks is to map the microcontrollers inputs and outputs to their respective...
Forum: Mercedes-Benz Performance Paddock 09-14-2019, 10:30 AM
Replies: 26
Views: 1,189
Posted By duxthe1
Been there, done that. I've got MS2-E on my...

Been there, done that. I've got MS2-E on my turbo'd wagon and I love it. If you're gonna boost any of these engines, its absolutely the way to go. On my '90 300 CE I've decided to keep it naturally...
Forum: Mercedes-Benz Performance Paddock 09-13-2019, 09:52 PM
Replies: 26
Views: 1,189
Posted By duxthe1
"Chipping" a CIS ECU

I know anybody that clicked on this likely did so to tell me that it isn't a thing and that I'm an idiot. Certainly the former is true, and the latter is debatable. :D
Regardless, in the pursuit of...
Forum: Off-Topic Discussion 08-28-2019, 09:00 PM
Replies: 7
Views: 349
Posted By duxthe1
My hat's off to her for meeting her end doing...

My hat's off to her for meeting her end doing something crazy that she loved. Albeit short, that is a life well lived.
Forum: Mercedes-Benz Performance Paddock 07-26-2019, 11:01 PM
Replies: 19
Views: 2,827
Posted By duxthe1
The Arduino gets vehicle speed over CAN from the...

The Arduino gets vehicle speed over CAN from the PCS, as well as engine temp, rpm and throttle position. The PCS TCU reads a 4 pulse tone wheel that sits behind the trans output yoke and once you...
Forum: Mercedes-Benz Performance Paddock 07-25-2019, 09:20 PM
Replies: 55
Views: 2,540
Posted By duxthe1
I'm fairly certain they were also SKF

I'm fairly certain they were also SKF
Forum: Mercedes-Benz Performance Paddock 07-24-2019, 08:44 PM
Replies: 19
Views: 2,827
Posted By duxthe1
Here's a sample of my current A/C performance... ...

Here's a sample of my current A/C performance...

First pic is ambient outside temp on the drive home today.

Second pic is the temp measured at the center vent, high speed fan, recirc off after...
Forum: Mercedes-Benz Performance Paddock 07-23-2019, 10:56 PM
Replies: 19
Views: 2,827
Posted By duxthe1
Hey thanks! I was correct about improved...

Hey thanks!

I was correct about improved A/C performance. 91F ambient this evening, watching the values in stop and go, the refrigerant temp never went over 135F and would drop by 20-30...
Forum: Mercedes-Benz Performance Paddock 07-21-2019, 01:33 PM
Replies: 55
Views: 2,540
Posted By duxthe1
Happy to report the diff is still working great. ...

Happy to report the diff is still working great. I'm calling it good.:cool:

As a followup on this thread I'm posting pictures of all the bearing numbers for reference.
Forum: Mercedes-Benz Performance Paddock 07-21-2019, 01:18 PM
Replies: 19
Views: 2,827
Posted By duxthe1
Update!

The 124 electric fan got a significant upgrade. Previously, I was controlling it from the PCS transmission module as a pulsewidth output based solely on engine temperature. It worked, and worked...
Forum: Tech Help 07-12-2019, 12:16 AM
Replies: 6
Views: 366
Posted By duxthe1
EIS-electronic ignition switch. SDS- star...

EIS-electronic ignition switch. SDS- star diagnostic system
Forum: Tech Help 07-11-2019, 12:30 AM
Replies: 6
Views: 366
Posted By duxthe1
Stick it in and wait. Once the led goes out you...

Stick it in and wait. Once the led goes out you should be able to remove it and stick in your regular key..... and wait. Once you hear the steering lock cycle that key should be good to go. Repeat...
Forum: Mercedes-Benz Performance Paddock 07-04-2019, 12:44 AM
Replies: 55
Views: 2,540
Posted By duxthe1
Pulled the diff back out and apart. I remember...

Pulled the diff back out and apart. I remember why I hate doing pinion seals. What a bear to pull the yoke off the damned things. After pressing the pinion out it was obvious that the rear bearing...
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