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If the DWG is to scale, which it has to be because it is converted to tool path for CNC cutter, then it should be fine for VR sensor provided good alignment.

Couple of thoughts… The 40hz noise seems way too low for harmonics, but likely all that logic analyzer can catch (very likely root cause it at a much higher frequency). Guessing you do not have oscilloscope? If you have one, then start probing and you should be able to isolate. Start at power supply...

How you approach crank decoding is to a large extent is hardware dependent. How many timers/counters, at what resolution (16, 20, 24, 32 bit), the higher the resolution the better the granularity. Also on modes of operation, single/double capture, with/without de-bounce filter… * rusEfi is implemen...

How you approach crank decoding is to a large extent is hardware dependent. How many timers/counters, at what resolution (16, 20, 24, 32 bit), the higher the resolution the better the granularity. Also on modes of operation, single/double capture, with/without de-bounce filter… If you attempt angle ...

V8 is going to be smoother than the 4-cylinder example that was posted. The 4-cylinder has a compression cycle every 180* (degrees), while V8 every 90*, so less torque ripple. While cranking and before engine starts, I tend to look at compression cycle like a pneumatic spring. If you want sequential...

Unless I'm mistaken, they still have not published an application note or example for angle based control. It looks like a nice board, especially for price point. The 20 bit timer resolution is nice and can be cascaded.

Yes normal, it's the compression of engine slowing cranking speed, then once past TDC it will accelerate. 4 cylinder engines have fairly large torque peeks...

PS: 0xC0, /* bmAttributes (self powered). * - that's from https://svn.code.sf.net/p/rusefi/code/trunk/firmware/hw_layer/serial_over_usb/usbcfg.c what this means I have no idea, cannot really look into this :( will add a jumper as a suggestion into the known_issues.txt Self powered within context of...

blundar wrote:If you go with a Honda, stick to manual trans. IMO.

Yup I agree, get an engine to run first before tackling auto trans... They are really easy to cook if you don't know what you are doing.

I did say I know nothing about Honda... But from Wiki http://en.wikipedia.org/wiki/List_of_Honda_transmissions You get; Honda's automatic transmissions are unusual in that they do not use planetary gears like nearly all other makers. Instead, the Hondamatic and its successors use traditional, indivi...

I don't know anything about Honda. The above controller, pretty much is low end of spectrum, not saying it's a bad unit, it's actually a very good and used it before. But referring to transmission types, most people use them with 4L80 (good to about 1000 whp) ~20 year old design. As a general rule 5...

https://www.powertraincontrolsolutions.com/download/Released/Public/Manuals/TCU_Master_Manual_rev2.1.pdf

Download manual... This is as simple as it gets. Most newer transmissions are more complex.

Correct when I said closes faster was referring to decay time. But base fuel pressure and injector design also factor in heavily. When you start dealing with large injectors, at idle they are nowhere near their linear region, so getting them to close quicker helps. Injector characterization in this ...

Just a side note - low clamp voltage in theory will limit have fast an injector closes.

Quote from Mike_e in same thread you referenced. Here's a news flash on the crank function form my FS contact: the free FS code has been used in numerous F1 cars just the way they provide it. hmmmmmm............my issue my very well have bee the changes that were made to the fake_cam wait time. I t...

About jitter, I though my notes were lost due to bit rot, but I see it was preserved. From here http://ecu.zeeff.com/viewtopic.php?f=33&t=275&start=37 I posted notes about the jitter we were seeing. The short version was that we were seeing jitter in the .3 degree to .5 degree range. We tri...

SPC5 studio update. I downloaded V3 about a month ago, but didn’t look at it too closely. Unfortunately nothing major has changes for MPUs with eTPU, as I noticed before. Other lower end units, now have a nice graphical configuration tool. chibiOS has been updated but looks like most of the effort t...

Did you have to change anything in the board file? Do you have the board file for TRK? I just edited startup code, from memory XTAL PLL startup and few other things needed to be changed. You also need to change JTAG jumpers on the board. Wow :( Sounds like Code Worrier port of ChibiOS is really nee...

ChibiOS does run on TRK board, tested it last year. As mentioned elsewhere on this forum you will need to purchase ST JTAG programmer. I asked on ST forum about eTPU support, got the we have no plans for it at this time. Also ST SPC5 studio is c and not c++. It had/has issues with e200z335 core, cod...

Correct you have standard stuff and options like NOS, second fuel pump... things that would not make sense to have dedicated outputs for.

You don't use it for fuel pump, its to allow non standard options like NOS enable. EDIT My project is something I'm doing on my own and as I said before, is proprietary and for profit. I will set up company and URL when completed or close to completed, till then I'm keeping it off the web so people ...

TCM these days or for last 10 or so years is CAN bus with proprietary PIDs (parameter ID). Some car models have a PCM (power control module) that is ECM + TCM, this is prevalent on 4 speed automatics. Be careful of driving transmission directly on new-ish models, not allot of documentation and those...

This is somewhat common in aftermarket. I’ve only seen (w>x) AND (y<z) AND …. AND… You simply create a temporary bit that each expression can set or reset, when done if true turn on output.

I’ve been doing this for some time, allows end user some flexibility.

Saab was GM, think some tuning support is available. Volvo was Ford, now owned by a Chinese conglomerate. Subaru is known for head gasket issues, especially years you mentioned. Introduce a bunch of knock while testing and that may just be tipping point. The reason I mentioned go after platform with...

I would say the complete opposite, get a car with great tuning support. The best was to learn is actually tune, also with that you’ll get an idea of how to correctly control an engine. Use/tune OEM ECU then swap out to yours, then back and forth, see how they compare… Also get a GPS based box to mea...

russian wrote:Working on TunerStudio support for Simulator - http://rusefi.com/wiki/index.php?title=Manual:Software:Simulator

If you can add arbitrary waveforms... I have 2 hardware dual channel units, its great for throwing trash at software and finding limits that you would likely not run into in real life.

Assuming we will use OSH Probably not osh - osh would be ~$600 for three boards. Cannot afford this even for a test run :( Try http://www.4pcb.com/66-each-pcbs/index.html?gclid=CNKVrNXjtL8CFUKCMgod9jwAaw , I've been very satisfied thus far and yes really a US company and not farmed out to China. Th...

I've ordered the kt819a has created a while ago. The price is not that great for single orders, but once you want to order 10+ it's really gets tempting: http://i.imgur.com/uQlYuIS.png Did you manage to second source this thru Asian market? Looked at Mouser and its backordered, waiting on 1000+ pie...

Keep in mind that how you deal with power enrichment, will to some extent be dictated by your tuning software. Software needs/should know what commanded AFR is in order to derive error.

I've made a tiny bit of progress, the numbers did match up - see test_speed_density.cpp Do I understand it right that I would also need VE(RPM, MAP) and AFR(RPM,MAP) tables to actually get the ve and atf values for current conditions? Would 8x8 be enough for any of these or do we need 16x16? It rea...