Search found 32 matches

by sturovo
Tue Dec 09, 2014 8:35 pm
Forum: Your car & your engine
Topic: 1994 USDM Mazda Miata #11
Replies: 172
Views: 26411

Re: 1994 USDM Mazda Miata #11

This is awesome we are beginning to cross the threshold into tuning!
This thread is completely fantastic!
The groundwork for future success is right here :D
Congratulations and well done spags, russian, Kb1gtt.
by sturovo
Sun Sep 14, 2014 4:38 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE (#4)

Andrey, The stock 1999 MX5 coils are triggered by +12v. As far as I know all 89 to 2006 cars (and possibly later?) were like this. http://forum.miata.net/vb/showthread.php?t=354300
by sturovo
Sat Aug 09, 2014 9:15 pm
Forum: Hardware
Topic: Plan B: hack OEM ecu
Replies: 13
Views: 3195

Re: Plan B: hack OEM ecu

This sounds really interesting. However I imagine even if a Honda solution were to be worked out it would still be pretty tough to port it to a different ecu type. Way above my skill level :D An alternative (less $) approach would be to use a parallel processor and modify the crank and injector sign...
by sturovo
Thu Aug 07, 2014 8:48 pm
Forum: Your car & your engine
Topic: 1995 Honda Accord - auto, vtec (#5)
Replies: 46
Views: 23630

Re: 1995 Honda Accord - auto, vtec

Great work Andrey!
by sturovo
Tue Apr 15, 2014 7:35 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

As can be heard in the video the exhaust is currently open. My plan is to install a larger turbo and finish the exhaust before continuing with ecu testing. Hopefully by next week it will be ready. I compared the stock ecu start data to the console start data. I used an Saleae type analyzer to grab d...
by sturovo
Tue Apr 15, 2014 7:02 am
Forum: Hardware
Topic: universal ECU connector?
Replies: 65
Views: 14009

Re: universal ECU connector?

Puff, I have connected similar pins using regular auto wire connectors. The connections are strong, typically as good or better than the original ones. Once the loom gets taped together and secured in position it performs like a plug. If you need the opposite type connection then it should be possib...
by sturovo
Tue Apr 15, 2014 6:00 am
Forum: Hardware
Topic: 64 pin 176122-6 ECU connector board
Replies: 28
Views: 8322

Re: 176122-6 ECU connector board

Just to confirm that this board fits well with my 1999 MX5 ecu plug type. http://i578.photobucket.com/albums/ss225/wob_03/P1050839_zpsfdbdbd97.jpg For the 12v power pin (on my car ecu pin 1B) it would have been nice that there were more than 2 connection points on the connector board. In my case I w...
by sturovo
Sun Apr 13, 2014 7:23 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Some progress!

It runs :D
[video][/video]
by sturovo
Tue Apr 08, 2014 5:59 am
Forum: Your car & your engine
Topic: 1995 Dodge Neon
Replies: 168
Views: 47731

Re: 1995 Dodge Neon

This is fantastic! Well done, seriously great :D
by sturovo
Sun Apr 06, 2014 9:13 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Some progress. I downloaded the source and tools needed to compile resefi.hex and updated the relevant mx5 configuration file to reflect my i/o assignment. After loaded the new hex I did some basic testing and tried to start car! There were a few ignition pops on the first try but none on subsequent...
by sturovo
Thu Apr 03, 2014 10:03 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

One of us has is wrong about low-side pinout: my document https://docs.google.com/spreadsheet/ccc?key=0Arl1FeMZcfisdE1JN0pfSFV0Yk1RcGFyVjA0ZDkxdFE says "OUT 1 jumper! PC14" while yours says "Inj 1 PC13" and etc. Looks like they are shifted by one raw. Can you please double-check which one is correc...
by sturovo
Wed Apr 02, 2014 5:13 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

I connected the rusEFI standalone to my car :D http://i578.photobucket.com/albums/ss225/wob_03/P1050766_zps3381119c.jpg Then cranked to see if the cam and crank signals are being picked using inputs 11 and 12. [video]http://youtu.be/9nRQJ_zq7fQ[/video] Good news is that the crank and cam patterns ar...
by sturovo
Tue Apr 01, 2014 6:20 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Good question :)
Most of the wiring is done and I am currently testing the i/o. Hopefully I will crank the car in the next few days to verify the crank and cam signals. I am unsure of how the immobilizer circuit works so hopefully this will not cause problems.
by sturovo
Tue Apr 01, 2014 5:59 pm
Forum: Software
Topic: Alternator control
Replies: 22
Views: 5939

Re: Alternator control

Thanks for the replies and suggestions. It sounds like in time a good solution will be implemented for rusEFI. For now I will probably go with using an aftermarket alternator regulator. I got this one locally for 10$ which regulates to 14.1 v. This may be a good solution in my case as it would mean ...
by sturovo
Sun Mar 30, 2014 1:31 pm
Forum: Software
Topic: Alternator control
Replies: 22
Views: 5939

Alternator control

On many cars including my 99 mx5 the alternator charge circuit is controlled by the ecu. Usually the circuit is disabled at low rpm so as not to charge during cranking. The stock alternator control works at around 14.5 V. Some people have developed hardware boards that specifically handle this featu...
by sturovo
Sat Mar 29, 2014 5:25 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Some progress I Plan to use a computer ribbon cable for internal connections. The driver circuits are wired with 2 conductors in parallel. http://i578.photobucket.com/albums/ss225/wob_03/P1050738_zps5a443224.jpg Now Tuner studio connects through the USB port on the Frankenstein board :) http://i578....
by sturovo
Fri Mar 28, 2014 12:07 am
Forum: Software
Topic: MAP but not SD as intermediate solution?
Replies: 69
Views: 15959

Re: MAP but not SD as intermediate solution?

the problem is response rate of 02 sensors is not that good, so building these initial baseline tables could be quite tricky. Puff, From what I read the response rate of the NB o2 sensor should be pretty quick.Something of the order of 50 mill seconds. This bears in my experience out as 10 Hz data ...
by sturovo
Wed Mar 26, 2014 10:43 pm
Forum: Software
Topic: MAP but not SD as intermediate solution?
Replies: 69
Views: 15959

Re: MAP but not SD as intermediate solution?

How do you calculate fuel based on throttle position? You do not calculate it - you look it up in a magic table. I wonder if the same works for engine vacuum. The desired outcome of a fuel control scheme is to maintain specific AFR's for various engine loads. I think the process of setting up table...
by sturovo
Sun Mar 16, 2014 8:57 am
Forum: Hello World
Topic: Howdy
Replies: 8
Views: 1966

Re: Howdy

Hi Rocketman. It sounds like you have the perfect skills set! I'm sort of a jack of all trades. Woodworking, metalcasting, machining, mechanic, computer junkie, etc. Little bit of everything. I have worked with mazda MECS ecu's in the past as well as some MS stuff, anxious to get my feet wet here. T...
by sturovo
Fri Mar 14, 2014 7:13 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

I received the rev 0.1 board and the ecu plug board and decided to mount it in an ECU case I had lying around. http://i578.photobucket.com/albums/ss225/wob_03/P1050654_zpsfbdc00fc.jpg The ecu plug fits nicely http://i578.photobucket.com/albums/ss225/wob_03/P1050648_zpsfdec886d.jpg and there is a rem...
by sturovo
Mon Mar 03, 2014 11:00 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

TS connected :o

Image

Now to try and figure out what can be done with it :D
by sturovo
Sun Mar 02, 2014 1:16 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Good link, very informative. I read through it a couple of times before and got the gist of why ovp mosfets are more suitable than snubbers. One thing I am curious about is if The OVP MOSFET circuit dissipates the clasping field current in the ECU then does this in turn cause the mosfet to heat up? ...
by sturovo
Sat Mar 01, 2014 6:05 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Good information KB1gtt. I am here to learn and appreciate your guidance as I am trying to become familiar with the basic components of engine management. I guess when I say warm I mean around 30 deg c so probably not really that high to cause trouble. The diode seems to work somewhat as without it ...
by sturovo
Sat Mar 01, 2014 5:14 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

While waiting for Frankenstein :D I tried out how IRLR2905 Logic level low rds mosfets work with 12 ohm injectors. http://youtu.be/PGbSOXWmcTE The transistor got warm but then again it was in free air and I was using a regular diode in place of a schottky. Paired with a sk34 they should probably wor...
by sturovo
Thu Feb 27, 2014 5:13 pm
Forum: Misc
Topic: Crowdfunding? Thoughts?
Replies: 18
Views: 7481

Re: Crowdfunding? Thoughts?

I am very interested in getting populated boards. Count me in for 3.
Without the hardware there is not much firmware development and it looks tough about getting more software developers involved.

If you book them they will come!
by sturovo
Mon Feb 24, 2014 10:51 pm
Forum: Hardware
Topic: Frankenstein - cheaper ECU shield / official / legacy
Replies: 88
Views: 48606

Re: Project Frankenstein - full ECU shield

Wow, that looks great!
I hadn't appreciated how compact the board is until seeing the photo.
Hopefully I will get my hands on one soon :D
by sturovo
Sun Feb 23, 2014 8:29 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Andrey, you are a star!
I set_engine_type 9 , connected the simulated outputs for crank and cam with jumpers ( arro_board.h) and I get this :D

Image
by sturovo
Tue Feb 18, 2014 11:10 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

Which leads as to the question: what is your trigger wheel setup? If it's not one of the hard-coded ones I would need to add it. It will be a while before I get to run my car as I am doing some cold weather upgrades. I came across a diagram posted on another forum describing the MX5 NB crank / cam ...
by sturovo
Wed Feb 12, 2014 6:34 pm
Forum: Your car & your engine
Topic: Mazda MX5 1.8 1999 AE (#4)
Replies: 38
Views: 16278

Re: Mazda MX5 1.8 1999 AE

I got some bits!
The plan is to output a signal from the arduino, manipulate it in the discovery and output the result to the Saleae.
It cant be that hard right? :D

Image