WOO HOO...got the programmer, not so happy results of ACHT bin findings....

**EagleMark** · 03-30-2013

Originally Posted by Fast355

The detonation is from the lack of EGR.

Good catch Fast!

Originally Posted by damanx

hmmmm......Ugh...I don't want to have to use the stock intake and egr system....

Turn off EGR...

**Fast355** · 03-30-2013

Originally Posted by EagleMark

Good catch Fast!

Turn off EGR...

Exactly....Set the enable temperature well above the engines operating temperature....problem solved. The ecm will no longer lean out the mixture or advamce the timing without the coresponding egr dilution.

**damanx** · 03-30-2013

Originally Posted by Fast355

Exactly....Set the enable temperature well above the engines operating temperature....problem solved. The ecm will no longer lean out the mixture or advamce the timing without the coresponding egr dilution.

Made these changes earlier to the BIN:

03/29/2013 15:06:27 Scalar: MPH Under which EGR is Disabled changed from 0.00 MPH (0x00) to 95.00 MPH (0x5F).
03/29/2013 15:06:38 Scalar: MPH Above which EGR is Enabled changed from 0.00 MPH (0x00) to 96.00 MPH (0x60).
03/29/2013 15:08:04 Scalar: Minimum Coolant Temp for EGR changed from 162.65 F (0xEF) to 184.25 F (0xFF).

**EagleMark** · 03-30-2013

Originally Posted by damanx

03/29/2013 15:08:04 Scalar: Minimum Coolant Temp for EGR changed from 162.65 F (0xEF) to 184.25 F (0xFF).

Don't trust that one, it's wrong. There's no conversion to temp and it's an AD count not available yet to match the AD Count to coolant. $FF is 255 counts = -40

EDIT: Just read the hack on $4e and no notes, so don't know if this is AD counts or just Celsius. Either way don't trust, it may be $00 to turn off.

Your MPH if named correctly should work.

Code:

 LD2AE:  FCB 181         ; BPW const for EGR off, (0.703) 
            ;----------------------------------------------
            ; LD2AE Constant is used for fuel BPW when 
            ; EGR is off. 
            ;
            ; If EGR is on, table LD2FB gives a different 
            ; contstant Vs. Vacumm for EGR compensation
            ;
            ; Durring EGR transients the val is filtered 
            ; between the two constants for smoothing

Code:

 A/D     DEGREES
COUNTS      C
-------   -------
255      -40
251      -30
250      -25
247      -20
245      -15
241      -10
237      - 5
231        0
225        5
218       10
209       15
199       20
189       25
177       30
165       35
152       40
139       45
126       50
114       55
102       60
92        65
81        70
72        75
64        80
56        85
50        90
44        95
39        100
34        105
30        110
26        115
23        120
21        125
18        130
16        135
14        140
13        145
12        150
0         200

http://www.gearhead-efi.com/Fuel-Inj...TS-conversions

**damanx** · 03-30-2013

I've got to get a UV light to erase the proms, how would running the 4.3l prom affect the EGR and the pinging?

**EagleMark** · 03-30-2013

Or you could do it better and solder in a G2 and use 27Fs512 chips, erase? Click!

https://www.moates.net/g2-memory-ada....html?cPath=64

Didn't you get a burn 2? It won't program a 2732a chip, just read it.

I do still use 2732a chips brand new when done with a tune using my 1227747 or other with G2 adapters soldered in and my Autoprom, but then burn a 2732a for stock ECM and reinstall. Never had much luck UV erasing stock GM chips, but the new ST2732a I've tested and burned and erased 5 times. Seems I fry GM AMD? chips every time?

**damanx** · 03-31-2013

I got one of the g540 eprom readers from ebay.

**damanx** · 04-04-2013

Finally got an eprom programmed. Although I am still waiting on the uvc lamp to erase the eproms, about 8 hours of direct Arizona sun seems to work also.

I modified the AMRW bin with the following changes, based on the 3.4l engine, 13 psi fuel pressure, and 4.3l injectors.

Edit Log for AMRWa.bin created by TunerPro.
************************************************** ************************
03/12/2013 10:49:04 Scalar: Minimum Coolant Temp for EGR changed from 95.15 F (0xBD) to 184.25 F (0xFF).
03/12/2013 10:50:07 Scalar: Minimum Coolant Temp for EGR changed from 184.25 F (0xFF) to 95.15 F (0xBD).
03/30/2013 11:01:54 Scalar: MPH Above which EGR is Enabled changed from 6.00 MPH (0x06) to 105.00 MPH (0x69).
03/30/2013 11:02:05 Scalar: MPH Under which EGR is Disabled changed from 4.00 MPH (0x04) to 104.00 MPH (0x68).
03/30/2013 11:02:32 Scalar: Minimum Coolant Temp for EGR changed from 95.15 F (0xBD) to 184.25 F (0xFF).
03/30/2013 11:05:42 Scalar: BPW Constant for EGR Off changed from 181.00 (0xB5) to 142.00 (0x8E).
04/03/2013 15:14:29 Flag: 32 EGR changed from Set to Not Set..

Will run Tunerpro on the way to work and post the files.

I did take a test run and definitely noticed a slight difference.

**EagleMark** · 04-04-2013

Originally Posted by damanx

Although I am still waiting on the uvc lamp to erase the eproms, about 8 hours of direct Arizona sun seems to work also.

Takes over a week here in Idaho summer...

**damanx** · 04-04-2013

I'll be heading to Petsmart to get a UV steralizer for fish tanks.

These numbers are from Winaldl since I can't get TunerPro to work as it once did.

BPW Constant set to 142. (3.4l with 4.3l injectors, 13.5 psi fuel pressure, modified AMRW bin in 1228062 ecm)

BLM Wide Avg
RPM \ MAP 20 30 40 50 60 70 80 90 100
400 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
800 0.0 110.4 118.0 114.0 0.0 0.0 0.0 0.0 0.0
1200 0.0 110.2 111.2 124.0 0.0 121.6 125.5 0.0 0.0
1600 0.0 108.1 112.2 116.8 121.1 122.7 124.9 0.0 0.0
2000 0.0 112.9 113.6 116.7 120.1 121.9 0.0 0.0 0.0
2400 0.0 0.0 120.3 121.5 127.0 0.0 0.0 0.0 0.0

INT Wide Avg
RPM \ MAP 20 30 40 50 60 70 80 90 100
400 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
800 0.0 128.8 121.5 113.0 0.0 0.0 0.0 0.0 0.0
1200 0.0 127.5 127.3 126.0 0.0 134.0 144.5 0.0 0.0
1600 0.0 126.8 127.2 126.3 129.7 135.2 132.0 0.0 0.0
2000 0.0 123.0 125.6 129.6 130.2 127.9 0.0 0.0 0.0
2400 0.0 0.0 123.0 135.0 127.7 0.0 0.0 0.0 0.0

O2 Wide Avg
RPM \ MAP 20 30 40 50 60 70 80 90 100
400 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
800 0.000 0.422 0.518 0.004 0.000 0.000 0.000 0.000 0.000
1200 0.000 0.545 0.394 0.013 0.000 0.556 0.102 0.084 0.000
1600 0.000 0.366 0.449 0.438 0.536 0.537 0.597 0.000 0.000
2000 0.000 0.515 0.457 0.540 0.597 0.673 0.000 0.000 0.000
2400 0.000 0.000 0.401 0.533 0.474 0.000 0.000 0.000 0.000

Knock counts

RPM \ MAP 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
400 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
800 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1000 0 2 0 0 0 0 0 0 0 0 7 0 0 0 0
1200 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1400 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1800 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2000 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0

**EagleMark** · 04-04-2013

Originally Posted by damanx

I'll be heading to Petsmart to get a UV steralizer for fish tanks.

May work as good as sunshine. But chips are supposed to be erased at specific UV light rating and amount of time. If not they are not completely erased or damaged.
Plenty of them on eBay for $20-$40..

**damanx** · 04-05-2013

The UV sterilizers for fish tanks are the same as those used in barber shops for combs, scissors, razors and are the same as those uv lamps in the water machines at walmart. They are all at the frequency of 253 nanometers, which is the frequency of the same lamps that erase eproms. These are commonly referred to as germicidal lamps.

Black lights run about 400 nanometers.

**EagleMark** · 04-05-2013

But are they really cheaper then $20?

You have a great deal of knowledge. Do you have any insight to correct UV erase time for stock GM chips or the aftermarket replacement ST2732a chips everyone has used for ? 10 to 20 years?

**damanx** · 04-05-2013

I'd have to check the specs, but would not doubt that the different manufacturers have slightly different ideas on how their respective chips are effectively erased.

What is certain that the wavelength is 253 nanometers is required to effectively erase them in the shortest amount of time, which I suspect to be between 1/2 hour to 1 hour depending on bulb wattage and distance from bulb that the memory is.

**EagleMark** · 04-05-2013

I've got an old Holiday Electronics UV eraser with the timer, it's set to 10 minutes. I'll do four chips at a time, this lines up the window on eprom centered to the light.

Tried this again on stock GM chips and works fine. Don't know why I used to fry them? Was long ago, I've been buying new ST2732a chips from China for years. Usually just burn one when I'm done emulating. I don't UV erase much...

HTH!