J-series Acura/Honda

[Peter]

Just don't blow the fucking thing up

No promises.
I haven't looked at the log yet, but the first thing on my list is making it start better.

[Peter]

A log of the latest firmware.

[Fred]

OK, thanks for the (old) log (what do you mean new in the new log???). New plans:

For you:

0) STOP beating on it! You can drive it, no probs, but keep it out of boost and keep the RPMs down, for the time being.
1) Diagnose and fix your BRV input circuit as it's not working.
2) Configure your sensors and injectors and tables etc 100% correctly including trimming your BRV input
3) Get a rough tune on the VE table

For me:

1) Write you a proper decoder so we can get rid of the noise in the RPM signal which is affecting pulsewidths a little

Graphs:

http://stuff.fredcooke.com/PeterRevUpBadSensorsEtc.png

Issues:

1) MAP and AAP should match each other very closely sitting with key on and engine off. Get some sort of barometer such as a fancy phone to check against. Tell me the part numbers of your sensors so we can get them installed into the code base.
2) time tol is better at low rpm, but still bad at high rpm - we can't fix that without a new decoder, though it's workign well enough to get it running better than it is now, so no biggy.
3) BRV starts off at 7V and ends up at 9.5V over the 60 seconds you did this log in. = Your PWs are longer than they ought to be and get leaner with time. = danger!!!
4) IAT shows 50 degrees C at the start, 43C at the end, it's winter, this is far from true... = too lean. = wrong calibrations. = a bit weird, where is the sensor exactly?
5) RPM is noisy due to effects previously discussed and RPM sampling mechanism, you need a new decoder, though it's not as important as any of the other issues.
6) MAP is pretty stable and smooth, can't be smoothed out more without new decoder and new configurable sampling code. Non issue.
7) AAP is rock solid, it's just going from one ADC count to the next and back. Looks pronounced due to auto scale. Value is 7kpa different from map before start, though. See point 1)
8) EGO doesn't seem to be doing anything, wait till you get your wbo2 before worrying about it.
9) TPS is from 8.8 to 27.37%, this seems narrow, but could be right if you were gentle with her. Check range and configure the end points to give 0 to 100%
10) A few sync losses at cranking, but no resets or losses elsewhere, = stable, good work.
11) IDT goes from 2.3ms to just 1.6ms during the log due to drifting BRV, that's a lot of dead time to start with, and a lot of PW lost by the end, not good, BRV matters, a LOT.
12) CHT has 2 degrees of noise all the way through it, not good, fix this. It seems to warm up properly, but the calibration is wrong. Starts at 70C and ends at 90C, learn C, I don't work in F, sorry. 90 is OK, but it was still climbing at the end, 70 is pretty warm, was it already running before this log? If it wasn't really warm, warm up enrich would be too lean, could be why starting sucks.

Get some advice from simis on reporting logs as you really need to tell the full story with each one or they're useless.

Hopefully this goes some way to pointing out how important good setup is. Without a reliable set of well calibrated readings you're just pissing into the wind. Get it sorted out while you wait for the wbo2, then log again, with a good description.

Fred.

[Fred]

Also, I expect you to take a crack at reading logs before sending them my way, and to have a vague opinion about what's good and what's not :-)

Please, stop hammering it, it's running on borrowed time if you don't stop.

Fred.

[Fred]

Also, you revved it to 6500, which is a bit high for a stroke like that. Be careful not to throw a rod, please. Don't want a bad rep pinned on us, I've already blown enough engines by abusing the engine :-)

[Peter]

Don't want a bad rep pinned on us

That's probably the best reason I have to take it easy. I'll try and keep her under 3k for the time being.

I expect you to take a crack at reading logs before sending them my way

Part of that comes from taking the log on the my laptop, and then instead of screwing around with a jump drive I upload it to you, and then download it onto Window for OLV. I did see that the RPM jumps around at in about 400RPM steps at 6k, which probably isn't that good for it.

Tell me the part numbers of your sensors so we can get them installed into the code base.

The MAP sensor on the engine AN08:
079800-5410
5V PS-4A
DENSO
The MAP sensor on the board AN04:
MPXH6250AC6U
The barometric pressure sensor on AN05:
MPXH6115A6T1

BRV starts off at 7V and ends up at 9.5V over the 60 seconds

I'll get this fixed today.

IAT shows 50 degrees C at the start, 43C at the end, it's winter, this is far from true... = too lean. = wrong calibrations. = a bit weird, where is the sensor exactly?

It is on the back side of the intake manifold. I know you said I should put it in right after the inter cooler, but that would put it in between the two turbos. So I don't think that would be a good idea. I'll move it when I get some time, and figure out where it's going to go.
I put a small(ish) injector flow rate in it so that it'll run rich while the details get ironed out. It's not horribly rich, but I don't think I could burn a valve. I could possibly foul a plug, but they're not horribly expensive, and they're pretty easy to change.

TPS is from 8.8 to 27.37%, this seems narrow, but could be right if you were gentle with her.

It's pretty close, I don't stomp on it to do the logs. I was trying to step it up about 1k at a time and holding it there to get decent readings over the whole RPM range.

BRV matters, a LOT.

Got it.

was it already running before this log?

Ya I had already been screwing around with it.

0) STOP beating on it!

I like how you put this as 0 Like before you do anything else, pull your head out of your ass. lol

OK, thanks for the (old) log (what do you mean new in the new log???).

Your last post in the FreeEMS vehicles section, you said you had pushed some new code, and there were some minor changes. I didn't see that you were talking about the master, and not my 'special' branch. I was a little confused, because it was still snapshot-87.

It sounds like a good plan to me.

[Fred]

That's probably the best reason I have to take it easy. I'll try and keep her under 3k for the time being

Thanks man :-)

I did see that the RPM jumps around at in about 400RPM steps at 6k, which probably isn't that good for it.

Not a huge deal with fuel only, but would cause sched errors if it was doing ign, and they'd be big due to the coarseness of it.

The MAP sensor on the engine AN08:
079800-5410
5V PS-4A
DENSO

Wait, this probably isn't ending up getting read at all! :-)

The MAP sensor on the board AN04:
MPXH6250AC6U

With default config, this should be close, hence 78kPa, I guess.

The barometric pressure sensor on AN05:
MPXH6115A6T1

There may be usable config, leave this with me.

It is on the back side of the intake manifold. I know you said I should put it in right after the inter cooler, but that would put it in between the two turbos. So I don't think that would be a good idea. I'll move it when I get some time, and figure out where it's going to go.

How about some detailed photos of the entire intake tract in a dedicated thread?

I put a small(ish) injector flow rate in it so that it'll run rich while the details get ironed out.

Smart move.

TPS is from 8.8 to 27.37%, this seems narrow, but could be right if you were gentle with her.

It's pretty close, I don't stomp on it to do the logs. I was trying to step it up about 1k at a time and holding it there to get decent readings over the whole RPM range.

You can setup a lot of this stuff by taking readings with the engine off and key on, this included. Should be straight forward to do.

0) STOP beating on it!

I like how you put this as 0 :) Like before you do anything else, pull your head out of your ass. lol

:-)

OK, thanks for the (old) log (what do you mean new in the new log???).

Your last post in the FreeEMS vehicles section, you said you had pushed some new code, and there were some minor changes. I didn't see that you were talking about the master, and not my 'special' branch. I was a little confused, because it was still snapshot-87.

Sounds like it was the same code to me :-)

Sweet, get started, when you're out of things to improve, I'll get stuck into my part. I'll fix up more general stuff until then.

Fred.

[sim]

Get some advice from simis on reporting logs as you really need to tell the full story with each one or they're useless.
Fred.

I just made a little template that I fill out and attach to each log I take. No big deal.

It does help with remembering what the hell happened, especially long after the fact.

And it makes Fred happy.

[Fred]

Another thing that is really good is naming/dating the files well. It's good for you too. I have hundreds or thousands of log files here, it's a bit of a nightmare sometimes :-)

[Fred]

https://fbcdn-sphotos-a.akamaihd.net/hp ... 0709_n.jpg

If that photo is accurate, the place that I want you to put your IAT is in front of your front bumper, literally inches from the intercooler on which ever side is out. Hole in the side of the first bit of pipe that is not rubber and somehow secure it there, make sure the inside is clean and free from machining swarf, and you should get excellent results.

Or has the setup changed now?

Fred.