Search found 234 matches

by tomiata
Wed Nov 02, 2016 1:14 pm
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

TPS looks significantly better, there is still some room for improvement, installing the thru hole resistors would probably help with that last little bit of noise. How about your Vbat, how does the scope look compared to the log? I believe you are using the OEM harness for Vbat, and CLT, is that c...
by tomiata
Tue Nov 01, 2016 4:24 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Trying to clean up TPS, I twisted the wires together, cut off about 6" of extra length, and added a heavier ground wire to the ECU case and to TPS ground. It looks cleaner on little dso scope. See if the log looks any better. stefanst wrote: I notice you don't like to drive at high rpms and full thr...
by tomiata
Tue Nov 01, 2016 2:05 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

kb1gtt wrote: I'll assume you used analog IN3 for TPS. How would you feel about changing R231 for an 11k ohm resistor? You could simply put a new resistor on top of the existing resistor. This would be an SMT thing, so probably less than desirable. No, I'm using IN5, and I see that would be R251 whi...
by tomiata
Mon Oct 31, 2016 3:22 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Sorry, but I just don't like the noise in your signals. Most critical are of course TPS and MAP which should get their reference GND driectly at the ECU. tomiata : Is that how you wired them, or are you grounding them somewhere in the engine bay? They need a dedicated GND wire coming directly from ...
by tomiata
Mon Oct 31, 2016 1:05 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Here is a trace of the TPS signal at a connection just outside the ECU with the engine running. This is at 0% throttle. Scope input is set to AC mode and 20mV per division. Look like roughly 20mv of noise, but there is an occasional spike of about 50mV like you see here, if I'm reading this correctl...
by tomiata
Sun Oct 30, 2016 9:40 pm
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

I guess I should start at the real world, by inquiring if @tomiata drinks coffee, energy drinks, etc. Noisy TPS could be the real world, loose cable, or other things like that. I doubt it, but should always cover the things I can't see personally. As a matter of fact, I am a coffee addict. Drip, po...
by tomiata
Sun Oct 30, 2016 12:26 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Here is another log from a longer drive over a variety of speeds and conditions with auto tune off and trying to keep it smooth. Thanks again for the extra eyes checking the logs!
by tomiata
Fri Oct 28, 2016 3:40 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

I put the TPS accel mult coeff value up to 1.5 and now I think you can see some added fuel from TPS. See if this looks better. If I set the engine load accel threshold very high, like 40 to turn it off. I do see the wide swing of lean rich when I stab the accelerator. That was probably what I observ...
by tomiata
Fri Oct 28, 2016 2:41 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

My question remains: Why is there no TPS-enrichment, if we're clearly above the threshold? tomiata : are you sure you had the table entered and the TPS threshold set at 3.0 for the log you posted? I'm asking because I can't find much accel-related problems in that log and no TPS-based acceleration ...
by tomiata
Thu Oct 27, 2016 4:49 pm
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Did the code change for the values needed in the TPS/TPS table after this post was written:
http://rusefi.com/forum/viewtopic.php?f ... ent#p20280

Looks like now it's a percent fuel add rather than a multiplier.
by tomiata
Wed Oct 26, 2016 1:42 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

I tweaked on the last ve table to get the AFR values back to normal and ran auto-tune another while. It seems like the TPS/TPS mult accel table makes it go unstable. I set it to back to all zeros and got things more close to normal and drivable. See log file rus441.msl. I put the modified TPS/TPS ta...
by tomiata
Tue Oct 25, 2016 4:15 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Did you manage to get your temp sensor calibrations sorted? Also: Both your CLT and your IAT signals are noisy and move in tandem. Usually indicative of a weak GND. Maybe run a few more wires to ground the ECU? On the other hand your TPS signal seems fairly solid and I assume it's running off the s...
by tomiata
Sun Oct 23, 2016 3:52 pm
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

After re-tuning VE, change the accel settings. Thanks a lot for the tips. I picked the adjusted ve tune and put in the accel updates. Oops, I applied them together. Here is data. I'm in Mississippi visiting my brother, and it was a cold morning at 45F, and was a bit hard to get started. I see my CL...
by tomiata
Sat Oct 22, 2016 7:37 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Wow, thanks a lot @stefanst, this is very helpful. I didn't try any more tweaks yet, but I have lots more data. I took the car on a trip tonight and ran rusefi for the first couple of hours, doing 65 to 75 highway driving. The misses/hesitations are pretty bad at times. I really want to work on that...
by tomiata
Fri Oct 21, 2016 4:19 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

There isn't much experience out there in tuning the enrichment on rusefi, so we should probably take an incremental approach. Make a change, drive around and log. Post log and discuss. I didn't have much time to look at this tonight, but I tweaked the ve table a bit to look a little smoother. And I...
by tomiata
Thu Oct 20, 2016 2:20 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

I'm looking at your log (2016-10-08-14-24). There are quite a few things that seem odd. Some or all of this may be explained in the previous pages, but I was too lazy to read it all. So my apologies if I'm asking something that has already been answered. - The log does not show an RPM reading. Sinc...
by tomiata
Wed Oct 19, 2016 11:35 pm
Forum: Your car & your engine
Topic: 2003 Dodge Neon (#9)
Replies: 109
Views: 35214

Re: 2003 Dodge Neon (#9)

russian wrote:Just put both Miatas into the garage. I believe I can park three Miatas and I even have 3-ish inches of extra room for else!
You cannot have too many Miatas :-)
by tomiata
Tue Oct 18, 2016 4:15 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Yes, good to squish a bug, rather satisfying :-) Back to the question from Oct 7: I've made yet another fuel miss fix recently but have not yet had a chance to try it, any chance you can compare the before and current firmware versions? Here are logs from a drive tonight with Oct. 17 firmware. Are y...
by tomiata
Mon Oct 17, 2016 2:45 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

The problem is with the PE3 pin change. I made these changes to board.h and I can start fine: 724c730 < PIN_MODE_INPUT(GPIOE_PIN3) | \ --- > PIN_MODE_OUTPUT(GPIOE_PIN3) | \ 772c778 < PIN_PUPDR_PULLDOWN(GPIOE_PIN3) | \ --- > PIN_PUPDR_FLOATING(GPIOE_PIN3) | \ I didn't look into it, but is it coupled ...
by tomiata
Mon Oct 17, 2016 12:55 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

I was able to build rusefi with old and new board.h and confirm that single file change causes the problem for me. I built with the old board.h and merged in changes for one port at a time. I narrowed it down to something in the PORT E section (figures it would be the last port trying A thru E) That...
by tomiata
Sun Oct 16, 2016 10:27 pm
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Can you please confirm that that there is no miraculous connectivity between pin PA6 (that's your MAP input right?) and any neighboring pins with a DMM? For instance PC4 was one of the ports which was affected by the 10627 change. Yes, PA6, inp10, is the pin I'm using for MAP. I looked at it on the...
by tomiata
Sun Oct 16, 2016 3:25 pm
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Can you please confirm that that there is no miraculous connectivity between pin PA6 (that's your MAP input right?) and any neighboring pins with a DMM? For instance PC4 was one of the ports which was affected by the 10627 change. Oh wow. It shouldn't be a meter probe. I only attached that after se...
by tomiata
Sun Oct 16, 2016 3:55 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

https://svn.code.sf.net/p/rusefi/code/firmware_archive/rusefi_firmware_20160915_10266.zip and https://svn.code.sf.net/p/rusefi/code/firmware_archive/rusefi_firmware_20160915_10267.zip Both are Sep 15th, one without https://sourceforge.net/p/rusefi/tickets/293/ chance and the next one with https://s...
by tomiata
Sun Oct 16, 2016 1:20 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

I suspect it's a firmware defect, can we please try different versions to pin-point the exact change?
Ok Sept 10 firmware works, starts fine. Sept. 20 firmware, no workie, almost starts and dies.

See logs attached, thanks working on this!
by tomiata
Sat Oct 15, 2016 6:48 pm
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

It's still catching and then dying. So I assume the amount of fuel its getting is wrong. I still don't understand a lot of what's happening in your logs: - Your MAP resting is 133- that's definitely wrong- Should be around 100 - Your MAP, while cranking, is around 10 - that's waaaaay too low - Your...
by tomiata
Sat Oct 15, 2016 2:55 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Got the new starter on, 3 hours by myself and really needed some swivel sockets and longer socket extensions. I can crank now, and I tried doing mapinfo and analoginfo before, during and after crank. I could not get both command entered while cranking though. The engine starts to catch on but immedi...
by tomiata
Fri Oct 14, 2016 1:23 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Good news, starter worked enough to do a good crank start with 9/5 firmware again. (Btw, I forgot to connect TPS last time.) Bad news, starter quit working after that. Could not try cranking with 10/13 firmware. But I attach logs from old and new fw in case they are useful. I'll work on changing the...
by tomiata
Thu Oct 13, 2016 3:31 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

Hmmm, maybe the starter motor is not bad after all. I reseated the plug for the starter solenoid on the starter, and she will crank now. I installed 10/11 firmware and will not start, similar to last try. But it does get some puffs and act like it is close to starting. Attaching logs. And I went bac...
by tomiata
Wed Oct 12, 2016 1:24 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

My starter motor seems to have died. I'll test after getting another starter. It may be the weekend before I can try it :-(
by tomiata
Mon Oct 10, 2016 4:30 am
Forum: Your car & your engine
Topic: Miata NA 1990, 1.6L stock #21
Replies: 378
Views: 43667

Re: Miata NA 1990, 1.6L stock #21

[... MAP sensor is installed on the frankenso board and hose routed through firewall to a spare port at the throttle body. I'll add a photo later, out of town right now. I'm not intimately familiar with the 1.6l intake and TB, but I had some trouble with noisy MAP when using a spare port towards th...