94 Roadmaster Estate .bin

[jstrand87]

Hi,
Recently uploaded the .bin file from my 94 Roadmaster Estate using EEHack. The car is entirely stock with 123000 miles and runs great. I thought it may help someone else so I figured I'd upload it here.

Please note I have not personally tested it by dropping it back into the car, so use at your own discretion.

I'm trying to do some light mods to drum up a few extra horses so any tips or tricks would be greatly appreciated.

Thanks!

[In-Tech]

It looks like your read is good.

Attached is your modified .bin file. I've been able to get away with this aggressive spark table but definitely watch for spark knock due to the roadmaster being fairly heavy. I changed a couple transmission parameters you might like too.

Mods, if this is not allowed, please let me know.

[jstrand87]

Thanks for that! Please forgive the question since I'm pretty new to this. I looked at your spark advance table an it looks like you really bumped up the low RPM advance settings. Do you think it would be safe enough to give it a try on 87 octane or should I run higher test initially?

Last night a compared a .bin from a 94 Impala SS and used that as a start point for transmission shift points and spark advances. Also did a couple small tweaks like disable the air pump stuff, ect...

Maybe I'll go a little more aggressive than the impala tables but maybe not quite as far as yours since I haven't had a chance to do much to the car over stock.

Also your shift points look good, i'll give those a try!!

Thanks again.

[dave w]

Bluecat Transmission Table is helpful for tuning transmission shift points. https://forum.hptuners.com/showthread.php?44953-Bluecat-Transmission-Table-Software&44953-Bluecat-Transmission-Table-Software

See attached .zip file.

dave w

[steveo]

just for fun i compared your bin (factory cal id 16230221) to the one i have on file and found some differences, i wonder which one is truly original (mine has the air pump disabled, which i think there was a factory service bulletin on)

that spark table above is way too much timing advance for iron heads in my opinion, it looks like an aluminum head table, but if it runs smooth and doesn't knock, go for it...

it's not necessarily the healthiest thing to run spark advance right at the limit, either, especially with fuel quality being so variable these days. just log with eehack and run the analyzer after, you will clearly see where the knock is occuring

i think the most power to be gained is in power enrichment fueling which is insanely rich on a stock b-body, i've seen guys with widebands going richer than 11:1 with the stock calibration. assuming your fuel system is healthy you should be able to pull at least 5% or maybe even 10% across the entire power enrichment table with no issues, i would also install the blm locker patch.

[jstrand87]

Good to know for sure. I know my air pump runs but i plan to pull it all out because the tube leading into the header is broken.

I'm going to start with a spark table closer to a stock. I made one up that bumped up the advance 1-5% starting with the stock and comparing it to other similar bins.

Just to clarify when you said "pull 5-10%" on the power enrichment table, subtract 5-10% across all the values but which table is that? I am using the EE.xdf in Tuner Pro.

Probably my most important issue is the comm errors, see below. I am getting these in EEHack, engine running or off (much worse when running) Happens every 3-10 seconds. Afraid to try to download with this going on. I was surprised i actually got a good upload in the first place.

I am using a new ALDL to USB cable from Red Devil River. Any thoughts? Wiring issue, cable issue or something else dumb I am overlooking?
Loading Definition DEVICE=0xF4 MSG=0x0
Loading Definition DEVICE=0xF4 MSG=0x1
Loading Definition DEVICE=0xF4 MSG=0x2
Loading Definition DEVICE=0xF4 MSG=0x3
Loading Definition DEVICE=0xF4 MSG=0x4
Loading Definition DEVICE=0xF4 MSG=0x5
Loading Definition DEVICE=0xF4 MSG=0x6
Loading Definition DEVICE=0xE4 MSG=0x0
Loaded 1014 elements into 8 definitions.
Using monotonic reference clock.
EEHack Version 4.70
Current OS : Windows 7
Built with THROTTLE_MS=2
Opened serial port COM2 Description USB Serial Port MFR FTDI
START SILENCE ROUTINE
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
START SILENCE ROUTINE
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
SERIAL: ECHO CORRUPT! (bad serial interface?)
START SILENCE ROUTINE

[steveo]

these cars are a bit of a pain, do you have 'silence extra modules' checked off in 'advanced' in settings? there may be a module such as an airbag or body control thing that's interfering with ALDL communications. some people pull a bunch of fuses other than PCM IGN and PCM BAT when flashing just for safety. personally i'd interrupt the the data wire from the ECM and run a connector there which you could disconnect and plug into the aldl cable. it's really just DATA and GROUND.

for power enrichment in EEX, set to view by: category. then you have air fuel metering > power enrichment > PE AFR correction tables. read the notes for those tables as the math is kind of weird. these are multipliers to target AFR. best to subtract from the RPM table i figure

[donf]

Bluecat Transmission Table is helpful for tuning transmission shift points. https://forum.hptuners.com/showthread.php?44953-Bluecat-Transmission-Table-Software&44953-Bluecat-Transmission-Table-Software

See attached .zip file.

dave w

So how is this used with Tunerpro and a tbi obd1 setup? I looked for the answer to that and have not turned up much. I would not use it on my van, as minimal changes to the original table were easy to do. I can see where it might be useful if you had an engine that needed drastically different shift points. I am mostly just curious what all the fuss is about.

[dave w]

So how is this used with Tunerpro and a tbi obd1 setup? I looked for the answer to that and have not turned up much. I would not use it on my van, as minimal changes to the original table were easy to do. I can see where it might be useful if you had an engine that needed drastically different shift points. I am mostly just curious what all the fuss is about.

Bulecat will provide Tables for "Normal" Transmission Shift Points and "Normal" TCC Engage / TCC Release.

Screen shot below is OBD1 TunerPro. OBD2 tables are "Usually" the same, maybe worded differently.

dave w

13100

[donf]

OK Thank you for the explanation, for some reason I was thinking it was more complicated than cut and paste.

[jstrand87]

Hey guys, things have been going well with the Roadmaster so far. I'm pretty happy with how it shifts and the car seems to have woken up a little.

I've done a couple things so far such as an intake kit and removed the mechanical clutch fan and did new higher quality plugs and wires, next step is upgrading the exhaust.

Attached is my .bin as of now. Any ideas to get some more out of it? Or should I leave it be?

Would like to get some more smoke off the tires you know!

[steveo]

you've done well, that's a very nice conservative first tune. if it runs well you could definitely leave it as-is

if you had a wideband or something you could try subtracting a bit more PE fuel, but your targets are pretty good, so if your maf calibration is close, you're within a few percent of ideal AFR, and on the rich side, which is good if you have no wideband.. but in reality, i've always found it richer than anticipated on a wideband.

you should do some logging and tune up your maf table a bit to compensate for changes in your intake.. take a log of a really nice long drive of varying conditions, at least half an hour, and run it through eehack's analyzer. it'll fix it right up for you, usually in 1 or 2 passes, and i bet its rich at low end, which is further enrichening your power enrichment fuel in that area and hurting your off-the-line power

install the blm locker patch in EEX too, that way trim issues wont create inconsistencies in power enrichment

[johnny_b]

Post a datalog

[jstrand87]

Thanks for the advice! I think you are correct with the new intake I am running rich and I have noticed my off the line power is down. I took a drive to town this morning and logged it.

I have the blm patch installed. Next steps I think would be to definitely take a look at my MAF table.

[johnny_b]

Need more data to figure out exactly where to set them, but it looks like your blm boundaries could use some tweaking. Youre not using a couple cells.

playing with these helped my tune tremendously for SD and im sure it can help for MAF also.

Although yours arent as weird as some of the other factory settings ive seen in the camaros

[steveo]

I took a drive to town this morning and logged it.

that's not much of a drive, you need more varying conditions to log. you barely even hit the gas. dont be afraid to shift manually and drive crazily during logging to get more useful data.


I think you are correct with the new intake I am running rich and I have noticed my off the line power is down.

nope, lean. run the analyzer on that log, you're 10-20% short on fuel depending on region.

are you sure you didn't leave a clamp loose or a hose unhoooked on that intake? that's kind of what it looks like to me.

[steveo]

another thing that helps you get more data is -temporarily- turning the power enrichment tps threshold way up so it doesn't go into power enrichment as much. that way you can get more heavy load and throttle fueling data while staying closed loop.

[jstrand87]

Okay guys, I think I need some advice.

I feel a little dumb asking the question but... on the EEHack dashboard you have your target AFR and the WB AFR readout. Target AFR is usually 14.7 while cruising or not in PE mode. Is the WB AFR number the calculated AFR that the sensor is seeing or is that the "setpoint" that is trying to drive the BLM?

For example if the WB readout is 12.5:1 and the target 14.7:1 is the PCM trying to add fuel because the car is running lean? Or is the O2 sensor reading rich and the PCM is trying to lean out the ratio.

[steveo]

Okay guys, I think I need some advice.

I feel a little dumb asking the question but... on the EEHack dashboard you have your target AFR and the WB AFR readout. Target AFR is usually 14.7 while cruising or not in PE mode. Is the WB AFR number the calculated AFR that the sensor is seeing or is that the "setpoint" that is trying to drive the BLM?

For example if the WB readout is 12.5:1 and the target 14.7:1 is the PCM trying to add fuel because the car is running lean? Or is the O2 sensor reading rich and the PCM is trying to lean out the ratio.

nothing about the wideband afr "drives the blm", your ecm doesn't use a wideband (if you add one, it's only for logging).

do you have a wideband hooked up? if so, get your data logged, and use the analyzer, you can't really tune fueling effectively from the dashboard.

the target afr is something you would generally ignore when not running in open loop (this includes power enrichment which is technically 'in closed loop mode' even though the o2 sensors are ignored). in closed loop it's fairly meaningless. if you're doing an open loop tune, though, it's nice to have.

[jstrand87]

Hi all
I have been a little busy with work and travel lately but I finally got some more data on the ol' RMW. I have a nice new 2.5" cat back exhaust installed along with a short ram intake.

Attached are a couple logs and the current .bin i am running. The trims are looking pretty close I believe. I think I need to look into the PE next but I am a little unsure. Unfortunately I do not have a wideband O2 sensor installed yet. Can I go any further with my tuning adventure without the wideband?

Any input or advice would be appreciated. Hopefully I'm on the right track so far.

[Dirtybob]

I disabled PE, ran a bunch of WOT logs, and then tweaked the MAF tables on my '95 RMS before I had a wideband. I was shooting for 12.75:1 in PE, 1/4 mile times were unchanged. Not too sure where acutal PE AFR ended up....

Later I installed some 1 5/8 shorty headers/new 2.5" exhaust and re-scaled the MAF tables in the cruising areas. Car picked up about 2 tenths, mostly in the 60'.
Got a wideband finally and was seeing about 12.6:1 in PE mode, I leaned it out closer to 13.1:1 and the car picked up another tenth/tenth and a half and about 1.5 mph.
Then my MAF dies and I assume it must have been going south for a while because after replacement my fueling was way off. I copied in a stock MAF table and made a few small tweaks to PE (still for 13.1:1) and the car runs the same as before (i.e. with the old crummy MAF) but cruise is a bit leaner (1-2%).


Can I go any further with my tuning adventure without the wideband?

so based on my meandering commentary above, probably/maybe/YMMV