rusefi.com

Just an update:
The car is driving very well on rusefi now. Either with the built-in MAP sensor, of just the stock AFM (MAF mode). Idle is fairly stable. AC and all other things one would expect, work.

It's time to sell!
Anybody in need of a rust-free 1993 NA6 Miata in classic red?

Quick summary: We currently have two idle modes- manual and automatic. Manual is "pick a value and leave it". Automatic employs an adjustable PID strategy. For most modern-ish street-driven cars, automatic will be needed. The implementation has improved considerably over the last few months. But the...

What pin on the main connector are we adding the Pull-down resistor (as seen in the pictures) to and what it the pulldown resistance?

The board seems to be a success indeed. I went for several longer rides without any issues. We have a working tune using MAP and a somewhat working tune (needs a better spark table) for running MAF. Idle compensation (closed loop idle) seems to begin working as well. The engine hasn't self-stalled i...

All I need now is a $200.00 3D PRINTED GAUGE CLUSTER https://pidashs.com/collections/pidash/ You want this to replace the stock gauge cluster? Most displays you can buy are not bright enough for a dash. A little bit of sun on them and you can't see anything. Something like this makes more sense in ...

AndreyB wrote: ↑

Tue May 19, 2020 5:36 pm

Ha, there is a crazy idea to actually drive that EGR solenoid since we have outputs! That would be low side pin 3D.

But opening EGR will rob you of power. DON"T DO IT!

Nice setup. Do you have any VD pulls? There's a guy near me who keeps supercharging NA Miatas (and subsequently blowing them up) and the torque curves he gets are just hilarious.

AndreyB wrote: ↑

Thu May 14, 2020 11:34 pm

Bribes. At this point it's unclear whom to bribe and in what amount. [...]

I bribe exclusively with alcoholic beverages. Who's the bribee?

We have a working proof of concept. MRE on 48 pin board works with a cheap ($1.20) microSD adapter board from Amazon. As soon as the ECU fires up, it starts logging. rusefi with spi microSD.jpg Two requests if I may: 1. Please include footprint for microSD adapter in the next gen board design. I bel...

AndreyB wrote: ↑

Wed May 06, 2020 12:54 am

Link to documentation added to first post

@stefanst, how many millimetres off are we?

Not sure how far we're off, but the connector should be in the exact center between the front mounting holes (PCB to case, approx 120mm apart). That would mean approx 17.5mm from each PCB mounting hole.

Needs more turbo.

YES!
I love your particular brand of insanity.

Trigger log attached.

Funny you should be talking about exciting red connectors. 1st assembled.jpg Board is assembled and being tested on the engine simulator. We are dropping sync a lot. See below: 020-04-23_13_13_10_646: EngineState: error: synchronizationPoint @ index 12 expected 4/8/0 got 4/9/0 2020-04-23_13_13_10_64...

https://github.com/rusefi/rusefi_documentation/blob/master/oem_docs/cases/BS616%20New%20Harvard%20Cover.dwg is this a 3D file or not really? Does this file provide enough data to prototype PCB outline? It's an AutoCAD drawing. PDF of the drawing is attached. Seems fairly detailed. Rusefi Case.pdf

It may be a voltage issue. NB Miatas have a weird signal-inversion behavior during cranking, especially when cranking more slowly. Cranking drops the voltage and that may cause some funkiness with the sensor. Try a bigger/newer battery? If one is not at hand, run separate power for the sensors (12V ...

Just looking through the schematic, trying to figure this thing out. I have a few questions: - On the injectors: How are the schottkys in series with the LEDs suposed to work. Seems to me like we'll send 12V straight to the LEDs and blow them up as soon as an injector output goes low. Should the dio...

I just realized that U2 and U3 won't be populated. I can order some with my next order from Digikey.

First batch of 10 boards ordered. Now let's see if shipments from China still make it here.
The suspension is palpable.

[...]About the WBO- Whats the cheapest way to go with this? I have basic soldering skills and I can make my own if need be Spartan2 OEM https://www.14point7.com/products/spartan-2-oem will fit inside the frankenso case and can be wired internally. Use the center connector on the frankenso to connec...

bill wrote: ↑

Tue Mar 31, 2020 6:39 pm

[...] now i just need another set of 2 turbos for the left bank of the V-12 [...]

Double-twins? I'm listening.....

Hi jpauten! Welcome to rusefi. Your project should be fairly straightforward. What are your power / boost goals? What hardware are you using? Any other mods to the engine? The GM-style MAP sensors should work well. The cheap eBay/Amazon aftermarket units are a bit hit or miss apparently. I had a few...

Crazy Striker wrote: ↑

Fri Mar 27, 2020 7:25 pm

Yes perfect Miata time.
I'm tidying up the routing on the board (a few days), there is approx 12-14 days from ordering to delivery, add the dropshipping time to that and you have it. I will update design status as often as possible.

Gwendal

Sounds great!

It's spring, convertibles are coming out to play (maintaining proper social distancing of course). I volunteer my testing-services for this board. When will it be available for sale?

That's great success indeed. Perfect way to not go crazy (or crazier as the case may be) during the shutdown.

The NB2 does have a "boost sensor". NB1 has it as well, as far as I know. I don't remember how the air-side of this sensor is connected though. If I understand correctly, It is used to ensure that the EGR solenoid is opening correctly and exhaust gas makes it into the intake. The assumption is that ...

On the more application-oriented side: Are we keeping the TFI and distributor? Just using the vanes in the distributor to read position and do individual coils? Install a crank-sensor for improved resolution? Sooo many options....

This may be cheating, but the Megasquirt guys sell an adapter board and the connector:

https://www.diyautotune.com/product/diybob-breakout-adapter-ford-60-pin-no-connector/

Unflipped is confirmed

AndreyB asked me to do some testing on my NA Miata to confirm (or not) what is happening here. So I immediately jumped into action and stayed on my sofa. But I did hook up a rusefi to a JimStim simulating an NA Miata. Result with firmware from September 2019: Miata NA Old FW.png And this is what we...