new $EE tuning thing!

**kur4o** · 05-04-2016

Hi johnny_b,
Can you help us troubleshoot your connection problems.

First can you install the latest beta. Than at IGN on engine off open eehack, first select the proper com port at the settings window, than at the main screen open raw, you will see idle module scan button. Press it and gather some data, when data stops flowing press it again. You can do that couple of times.The more data, the better. Copy log data to text file and post it here.

At the latest beta I found a bug when no com port is selected and you try to connect, it crashes after indefinitely opens new error messages.

**Thatdudeorion** · 05-06-2016

Originally Posted by steveo

there are more egr parameters not defined that might limit you a bit, nobody seems to tune the EGR much. i'll look into it a little for you.

i should tell you that my experimentation certainly showed messing around with the EGR hurt, not helped fuel economy. the stock egr settings already seem to be pretty much maxed out into a state where the EGR doesn't hurt much in the way of performance.

although it seems more of an inert gas would fill in some space and simulate a slightly smaller displacement engine or whatever; i think that's all negated by the fact that cold combustion temperatures and less torque are certainly both enemies of efficiency.

the fact you can jack up timing to make up for the loss a bit doesn't make it an efficiency gain, just helps prevent a major loss.

let me know if you find different, though

So I'm really glad that you mentioned your thoughts on EGR. I spent a while with it tuned to open the EGR valve as much as possible, and yesterday I disabled it altogether, and wouldn't you know it, my initial results indicate that your observation was correct. Disabling EGR has seemed to improve my MPG. The one drawback I did notice, and may not be as much of a concern to other folks, but because of my trans woes, I spend way more time than average in low rpm/high load (high kpa) conditions since I only have 1st gear sometimes and 2nd gear never. Accelerating from a dead stop in 3rd with all the slip the stock TC can give results in some pretty bad pinging on 87 octane, which I believe the EGR was mitigating rather effectively. I'm probably going to reprogram it to use EGR up to ~1400 rpm or so for its anti-detonation properties and then have it not come on at my cruising rpms for efficiency. Thanks again!

**steveo** · 05-07-2016

Accelerating from a dead stop in 3rd with all the slip the stock TC can give results in some pretty bad pinging on 87 octane

nah. you're just running too much timing advance for 87 octane, that's all. you should run 91 in an LT1.

**lionelhutz** · 05-08-2016

I'm a little disappointed. I finally had my car out today and but I just get errors connecting. Mostly no echo and a few bad response errors. It shows the PCIe serial card I'm using so it seems to recognize the port fine. My interface works fine with Tunerpro and CATS. It's a stand-alone LT1 install. I did try turning off the BCM silence routine but that didn't help, but then I didn't think it would. Any ideas on what I did wrong?

**steveo** · 05-08-2016

pcie serial card?

is this the latest version?

is it an f-body?

most of the time, errors like that result from a failure to silence whatever module is the bus master. along with the new experimental versions of connection models for fbody and bbody cars, i did change the f-body connection routine a bit too. maybe there's a regression. can you try an older version?

**lionelhutz** · 05-09-2016

An Express card then. PCIe expansion slot on a laptop.

It's a stand alone LT1 install. There are no other modules to interfere with the communications.

**steveo** · 05-09-2016

let's see a log

**lionelhutz** · 05-09-2016

Originally Posted by steveo

let's see a log

This is what I get. It's sending silence requests but there are no other modules on the serial bus to respond to them.

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.
VERSION re-checking, network went online!
VERSION offline status, skipping versioning
Using monotonic reference clock.
EEHack Version 4.51
Current OS : Windows 7
Built with THROTTLE_MS=2
Opened serial port COM1 Description PCI Express Legacy COM Port MFR Oxford Semiconductor Inc
SERIAL: WAITED_TOO_LONG in serial_read_packet
SERIAL: No echo! (Serial interface problem..?)
SERIAL: WAITED_TOO_LONG in serial_read_packet
SERIAL: No echo! (Serial interface problem..?)
SERIAL: WAITED_TOO_LONG in serial_read_packet
SERIAL: No echo! (Serial interface problem..?)
SERIAL: WAITED_TOO_LONG in serial_read_packet
SERIAL: No echo! (Serial interface problem..?)
SERIAL: WAITED_TOO_LONG in serial_read_packet
SERIAL: No echo! (Serial interface problem..?)
SERIAL: WAITED_TOO_LONG in serial_read_packet
SERIAL: No echo! (Serial interface problem..?)

**kur4o** · 05-09-2016

It looks like hardware problem.
Is this true serial adapter you`re using , made of transistors, or chip based.
Can you provide vendor or schematics of it.
It seems like driver incompatability, even though the pciexpress card is good quality one.
I have tried the programm with true serial port with max232 to ttl adapter and works fine. It is a liitle faster and much more stable than with usb adapters

As a last option get yourself cheap chinese usb adapter, they are 3 to 5 usd with free shipping and work good.

Did you test other programms with the same setup at the time when you have issues with eehack.

**steveo** · 05-09-2016

Originally Posted by lionelhutz

This is what I get. It's sending silence requests but there are no other modules on the serial bus to respond to them.

aldl interfaces are single line so everything you transmit comes right back at you. 'no echo' means that didn't happen (usually because other stuff is happening on the serial line, or because rx/tx aren't tied together), and 'waited too long' indicates that nothing (or too short of a response) came back.

the only silence request it should send is to the ECM if it's in f-body mode, and the ecm should respond. as soon as it responds properly to a silence request it's considered 'connected'.

'Legacy COM Port' does concern me as that driver might not happily set an odd baud rate like 8192, but if other software works with the port, i can't see that being the problem?

could you check 'verbose' and do another log?

**Thatdudeorion** · 05-09-2016

Unqualified answer: yes I completely agree with you, I'm running too low of octane fuel.

Answer with qualifiers: Right now, my #1 goal is reduction in cents per mile, so I did some back to back testing with 93 octane vs. 87 and the pinging that I get at low rpm/high load doesn't really improve with higher octane gas. I think it's something unique to my car with the trans issues I have that basically require lugging the engine to the point where the engine gets into a state that the factory trans tune would never allow and doesn't appear to run well in those states regardless of the highest octane fuel I could easily find. The EGR however did seem to cool the combustion enough to reduce the pinging to what I would consider negligible/acceptable. Given that where I'm at, I can't get 91 and 93 can be around 30% more expensive than 87, I'm going to keep tuning for 87. I know this whole thing will probably end with burned exhaust valves, melted pistons, etc. but at this point, the car has body damage, a bad trans, oil consumption/leaks, etc. and I'm basically just challenging myself to see how cheaply I can get it to go to work and back until I melt it down and have to buy a craigslist Geo Metro or something actually made for MPG's.

Originally Posted by steveo

nah. you're just running too much timing advance for 87 octane, that's all. you should run 91 in an LT1.

**lionelhutz** · 05-10-2016

Originally Posted by kur4o

Did you test other programms with the same setup at the time when you have issues with eehack.

As I originally posted CATS and Tunerpro work. I've flashed the PCM dozens of times with the interface. I think its a MAX232 device but I've had it so long I hardly remember. Its a board and parts I bought as a kit years ago.

I've ordered a USB adapter so I can use a different pc but it'll likely take 3-5 more weeks to show up.

**steveo** · 05-10-2016

i wonder what's up with that, you're using 4.52 with 'f-body' selected?

i'd love to see a verbose log

i have seen problems with non-ftdi interfaces before due to baud rate setting, but if the other tools work, i can't imagine what they're doing differently.

**steveo** · 05-10-2016

in other (off topic) words i've decided to try something completely different just for a breather from GM stuff, so i got an 80s 'yota straight 6 with a 5MGE (jettronic with a weathervane maf and all that). why i enjoy old abandoned systems, i have no idea, but i want to get a spare ecm and try to hack 'er up a bit....

**Xnke** · 05-10-2016

The Hitachi-licensed version of the Bosch L-Jetronic system you have is probably an analog system-there's nothing there to hack. Same system as what's on the older Nissans, Nissan stopped using it and went to their own slightly-hackable version in '84, toyota kept using the analog system in some cars till '88. Depending on what that 5M is installed in, it may or may not have anything you can "work" with.