rusefi.com

The resistance curve is configurable, but there's a sort of "reasonable range" that we can detect most easily with the best accuracy. The ECU has an internal 2.7k pullup resistor on the temperature inputs, so resistances at sensible temperatures around 10k to 100 ohms are best.

Darn, I already bought a set of GM style MAP sensors. This also begs the question so of sensor placement. Does the intake temp sensor HAVE to be in the intake after the ETB or can it be in front of the ETB similar to where a MAF would live? I've already packed the engine up so drilling into the int...

Good to know, most of my car is analog using relays so a simple flip flop to invert the 12v I'm guessing will work. I can also find solenoids that are normally open and closed so I'm not draining battery hold a solenoid open. Wait, why are we inverting something? Why not just let the ECU control th...

AndreyB wrote: ↑

Tue Apr 13, 2021 3:56 am

we are flirting with delayed ECU shutdown

proteus hardware doesn't support delayed shutdown

Lambo97 wrote: ↑

Tue Apr 13, 2021 3:46 am

I'm using it for coolant temp,

Reads 73K at 15C, goes down as it gets hotter.

hmm, that's pretty high.... do you still have the stock BMW? They should work great.

Does not really matter but lets place etb 1 where you have cylinder 1/head 1/coil 1. i believe we do not plan to control evap solenoid unless you use FSIO, so far we were avoiding it Agree that ETB1 should be plumbed to cylinder 1. We don't do anything with it yet, but in theory could in the future...

Time for the annual thread update. Car mostly ran great at our race last June, and just did a track day in preparation for our race at the end of the month.

SHOf429 wrote: ↑

Mon Apr 05, 2021 3:50 am

US $13.85 9%OFF | 10pcs/lot STM32F031 STM32F031K6T6 LQFP32
https://a.aliexpress.com/_mMRiurp

Could this be a substitute? Decent availability, at least for the moment. Cheap enough, too.

IIRC the F031 doesn't have CAN.

MSD = USB mass storage (Mass Storage Device = MSD)

Looks like it's working though, so that's good!

If you connect the ECU over USB before applying external power, it should appear as an SD card reader to your PC, so you can check functionality that way.

AndreyB wrote: ↑

Thu Apr 01, 2021 6:30 pm

Does this apply to GD or does this apply to original 48 pad package ask?

probably both, but especially GD since the firmware is less compatible than a different F0

LQFP-32 seems to be pretty unavailable these days while there might be some hope with LQFP-48? Would STM32F103C8T6 or STM32F030C8T6 or else in 48 pad package be an option to have WBO fabricateble again? the availability problem is with the f042 die, not just with the lqfp32. The F030 doesn't have C...

considering this ongoing crisis, why not GD32? GD32F190 is a 5-V series. I don't think GD32 will necessarily have any better availability than ST. They're fabricated using essentially the same wafers. There is not really much point in trying to redesign during a shortage like this, since by the tim...

https://github.com/rusefi/rusefi/wiki/WBO Wow, that wiki page is pretty bad and completely skips any mention of analog wideband input. JRockland , we do support wideband oxygen sensors. There are a few options: External controller with analog output, like then AEM 30-4110 and similar products. Exte...

They look great, but they still use a cable right ? I might try to find something like what is on the m62b44.. If it fit with the headers. if not this is gona be my option. And I love the idea of red ! Yes, all LS coils (GM pushrod V8 engines after 1997 or so) have individual coil-near-plug with a ...

mk e wrote: ↑

Tue Mar 16, 2021 11:16 pm

That's what I use...they were like $10 each and came in ferrari red

Hope you got some spares because $10 is some high-tier Chinesium for an LS coil.

OrchardPerformance wrote: ↑

Mon Mar 15, 2021 11:39 am

Some cheap irons are. I have one that turns LEDs on when I solder them with it.

Oh dear.

puff wrote: ↑

Sun Mar 14, 2021 10:55 pm

220V? how safe is it? I've read that you shouldn't use soldering irons connected to mains for soldering electronics since you can ruin ICs..

eh? the tip of the iron isn't live, in fact it's usually connected through a small value resistor to the ground pin on the plug

Depends on the meter. I actually don't own one that supports it, but I've certainly seen them before.

puff wrote: ↑

Sun Mar 14, 2021 8:20 pm

Will it be just one WBO (considering initial notion of 8 cylinders, which probably implies two banks of cylinders, hence, two WBO sensors)?

it's really designed as a miata pnp board, so two sensors is overkill

Some engines will also try and tune the per-cylinder fueling and ignition timing to improve smoothness. We don't do anything to detect misfire yet.

plus having a camshaft position sensor probably gives you more opportunities for misfire detection (i.e. it allows you to detect which exactly cylinder is in trouble, which becomes quite handy for V engines) once you're synced you don't actually need to look at the cam sensor any more - the relativ...

Nothing particularly offensive in there. It looks like you have the fuel pressure compensation mode set to "sensed pressure", but you have no fuel pressure sensor configured? You don't need the VE/AFR overrides set, as those use MAP by default when in speed density mode. Once you have the ...

Forgive the EFI-newbie question, but why couldn't I do that with just the crank signal? A 4 stroke engine completes a full cycle in 720 degrees (2 revs) of the crankshaft. Every cylinder fires every other revolution because it takes two cycles up/down of the piston in the cylinder to operate a 4 st...

That cam pattern is indeed the "Bosch Fast Start" pattern that's extremely common, even on cars to this day.

The "real" benefit you'd get from connecting at least one cam sensor is that you can run full sequential, instead of wasted spark.

Oh, if you have your flex sensor hooked up, you can just look at the E content on the gauge in TS :) I just need to literally push the pin into the ampseal and it will be operational lol. Next time I have it apart Ill get it together. Posted my current tune FYI. Cool, I'll have a look thru it tonig...

Oh, if you have your flex sensor hooked up, you can just look at the E content on the gauge in TS

I had once repaired an ECU from a 1.8t with an LSU 4.2 and it used CJ110 ic that is the same thing as CJ125 but only supports LSU4.2. So it seems they don't all use CJ125 for both types of sensors. Στάλθηκε από το CLT-L09 μου χρησιμοποιώντας Tapatalk Ah right - forgot about the CJ110. But either wa...

Is the car running now? The car's CAN bus is how the ECU communicates with the TCU - and if you can sniff the signals from that bus while the car is operating, we can make an attempt to replicate those signals from rusEFI. If the car isn't operational on the factory electronics, this gets significan...

ethanol is cheaper than gas (thanks, corn subsidy), not more expensive, so I suspect it really is about 10% all the time