Search found 133 matches

by blundar
Sun Jan 16, 2022 9:52 pm
Forum: You and your build
Topic: 190e with 5.0 M113
Replies: 25
Views: 656

Re: 190e with 5.0 M113

Why not just use coils with builtin ignitor modules, and use 8 of them? They're cheap, plentiful, reliable, strong.
Don't make things harder on yourself than you have to if this is your first adventure.
by blundar
Sun Jan 02, 2022 11:43 pm
Forum: You and your build
Topic: W201 M111 Conversion (Hellen 128)
Replies: 44
Views: 4488

Re: W201 M111 Conversion (Hellen 128)

https://github.com/rusefi/rusefi/wiki/Hellen-128-Mercedes Hellen128 includes zero, one or two wideband controller modules onboard. You can tell if your board has zero, one or two modules populated by looking at the PCB. Looking at the picture above on Jan2-2021, only the right wideband section (WBO0...
by blundar
Tue Dec 21, 2021 3:32 pm
Forum: Dev: Hardware
Topic: F103 Wideband Controller
Replies: 21
Views: 3666

Re: F103 Wideband Controller

https://www.molex.com/molex/products/family/math2o_sealed_connectors https://www.content.molex.com/dxdam/literature/987650-6511.pdf Female: 36792-1201 https://octopart.com/36792-1201-molex-24622492?r=sp Terminal 17-20AWG / 0.50-0.75mm 36799-0001 https://octopart.com/36799-0001-molex-24622493?r=sp Te...
by blundar
Tue Dec 14, 2021 7:09 pm
Forum: Tuning Support: Making it Run
Topic: Cranking / starting part 1
Replies: 2
Views: 3129

Re: Cranking / starting part 1

Matthew Kennedy suggests:

"60mg fuel / liter of displacement for each cylinder is a much better estimation for cranking fuel."

i.e. 5.3L V8 = 5.3L/8 = 0.666L / cylinder * 60mg/L = 37mg cranking


As of today (12-14-2021) priming logic is too new to have well defined suggestions.
by blundar
Mon Dec 13, 2021 2:21 am
Forum: Tuning Support: Making it Run
Topic: Charge Temperature Estimation
Replies: 1
Views: 464

Re: Charge Temperature Estimation

The "big picture" behind tcharge is to try and more accurately predict the temperature of air entering the cylinder, as this is what matters more than the temperature of air wherever the intake air temperature sensor is or the temperature of the coolant sensor. The broad principles here ar...
by blundar
Tue Nov 16, 2021 4:36 pm
Forum: Dev: Hardware
Topic: BGA in ECU
Replies: 16
Views: 2224

Re: BGA in ECU

FICMs don't fail due to soldering issues. They're essentially a heavy-duty boost converter and PnH driver in one. The FETs are mildly underspecced for long term reliability, plus the usual capacitor issues. Although I replaced a lot of components "just because" I did test as far as finding...
by blundar
Tue Nov 16, 2021 3:52 am
Forum: Dev: Software
Topic: Software knock processing
Replies: 37
Views: 11066

Re: Software knock processing

I'm NOT trying to downplay the significance or impact of the work that's being done here. With that said, ask yourself this: Why would pretty much every engine management vendor implement knock sensing and the response to detecting knock slightly differently if there was a universal solution that wo...
by blundar
Sun Nov 07, 2021 9:18 pm
Forum: Dev: Hardware
Topic: F103 Wideband Controller
Replies: 21
Views: 3666

Re: F103 Wideband Controller

My version:
-Ordered 20 units, have them.
-Started to look at the HAL stuff to configure the I/O. Got frustrated. Put it aside
-Got consumed by things that make money, life.

there is status update.
by blundar
Sun Oct 31, 2021 5:17 pm
Forum: Plug In Boards
Topic: 2003 Honda Element
Replies: 16
Views: 3020

Re: 2003 Honda Element

***VTEC*** / VTS is a high side drive. (variable lift / lock additional cam lobe to change profile / engage all 16 valves depending on implementation)

***VTC*** / VVT is low side drive AFAIK.
by blundar
Mon Oct 25, 2021 1:41 am
Forum: Universal Boards
Topic: Frankenso: does anyone have pictures for this board
Replies: 84
Views: 7236

Re: Frankenso: does anyone have pictures for this board

bigredproject wrote:
Mon Oct 25, 2021 1:30 am
so as of right now what is wrong with my board?
I have no idea what is wrong with your board. I can tell you to refer back to my earlier instructions for installing KiCAD and then systematically working your way from power in to outputs out, probing and scoping along the way.
by blundar
Mon Oct 25, 2021 1:23 am
Forum: Universal Boards
Topic: Frankenso: does anyone have pictures for this board
Replies: 84
Views: 7236

Re: Frankenso: does anyone have pictures for this board

i do have a fire extinguisher Here, we would call this "having your priorities in the right spot." :D Honestly - I didn't read this entire thread. Enough of the old timers were exasperated that it hit my radar and here I am. I read maybe 10 posts. Long before you declared yourself to be a...
by blundar
Mon Oct 25, 2021 12:56 am
Forum: Universal Boards
Topic: Frankenso: does anyone have pictures for this board
Replies: 84
Views: 7236

Re: Frankenso: does anyone have pictures for this board

Do you have anyone helping you on this or are you flying totally solo? What's your planned use case for this Frankenso assuming that you manage to get it to the point where it conceivably could run an engine? I'm not trying to be mean or be an ass here - I'm genuinely concerned that you dot the Is a...
by blundar
Mon Oct 25, 2021 12:49 am
Forum: Universal Boards
Topic: Frankenso: does anyone have pictures for this board
Replies: 84
Views: 7236

Re: Frankenso: does anyone have pictures for this board

You're beyond iBOM. You need to answer the question "if the knee bone is connected to the shin bone, what is the shin bone connected to?" You do that by looking at the design files. If you have not done so already, you need to clone / download this entire project: https://github.com/rusefi...
by blundar
Mon Oct 25, 2021 12:35 am
Forum: Universal Boards
Topic: Frankenso: does anyone have pictures for this board
Replies: 84
Views: 7236

Re: Frankenso: does anyone have pictures for this board

I think some of the snippyness you are finding is because Frankenso is the most "developer" of the current offerings. It's for people who *really* want to get their hands dirty. It's for people who want to learn more about the development process vs. those who want things to work. I don't ...
by blundar
Mon Oct 25, 2021 12:29 am
Forum: Universal Boards
Topic: Frankenso: does anyone have pictures for this board
Replies: 84
Views: 7236

Re: Frankenso: does anyone have pictures for this board

p.s. they call it "open source" because you can refer to the sources when you have questions

https://github.com/rusefi/rusefi/tree/master/hardware/frankenso
by blundar
Mon Oct 25, 2021 12:25 am
Forum: Universal Boards
Topic: Frankenso: does anyone have pictures for this board
Replies: 84
Views: 7236

Re: Frankenso: does anyone have pictures for this board

Are you sure it was a good idea to purchase a board that requires reading comprehension, bigredproject?
by blundar
Thu Oct 21, 2021 1:55 am
Forum: Tuning Support: Making it Run
Topic: rusEFI professional tuners
Replies: 2
Views: 1729

Re: rusEFI professional tuners

I'm not sure I qualify as real or professional but... I'm planning on helping Jimmy with his Mercedes when he is ready. I'm planning on using RE on my skyline eventually, and maybe CRX after I get it running. My #1 rule of remote tuning was "tune what you have had success tuning in person"...
by blundar
Fri Oct 15, 2021 6:03 pm
Forum: Dev: Hardware
Topic: Proteus - Waterproof, High-feature ECU!
Replies: 302
Views: 118088

Re: Proteus - Waterproof, High-feature ECU!

I think this is it...

https://www.digikey.com/en/products/detail/amphenol-socapex/USBBFC7/1119922

Also, appears to be a MIL-5015 standard size dust cap for a size 16 connector.
by blundar
Fri Oct 15, 2021 5:56 pm
Forum: Dev: Hardware
Topic: Proteus - Waterproof, High-feature ECU!
Replies: 302
Views: 118088

Re: Proteus - Waterproof, High-feature ECU!

https://www.amphenolltw.com/p2-products-detail.php?product_series_sn=17&product_classify_sn=10&sn=2409

Amphenol's product page does not list caps, only assemblies to have a waterproof USB connected cable.
by blundar
Fri Oct 01, 2021 3:33 am
Forum: Dev: Hardware
Topic: Bosch vehicle accelerometers
Replies: 12
Views: 1949

Re: Bosch vehicle accelerometers

My 1992 (!!) R32 skyline has an accelerometer as part of the ATTESA all wheel drive system. Apparently, they're somewhat problematic. Not surprising they pre-date the solid state MEMS units these things are using!
by blundar
Mon Sep 27, 2021 7:00 pm
Forum: Tuning Support: Making it Run
Topic: MAF vs Speed Density, why do we prefer which one?
Replies: 21
Views: 3310

Re: MAF vs Speed Density, why do we prefer which one?

No it doesn't...it implies it depending on cylinder size and IAT, so you care about a different value for every engine size and IAT. I'm going to disagree with you there. *grams / cylinder* is the ultimate measure of cylinder pressure. The end. When the valves close and the compression stroke start...
by blundar
Mon Sep 27, 2021 1:10 pm
Forum: Tuning Support: Making it Run
Topic: MAF vs Speed Density, why do we prefer which one?
Replies: 21
Views: 3310

Re: MAF vs Speed Density, why do we prefer which one?

[MAP....it gives a pretty direct indication of cylinder pressure which is vey helpful knowing where to set timing. that's the thing... it really DOESN'T tell you cylinder pressure. grams/cylinder tells you cylinder pressure. MAP tells you what you have prior to the intake valve opening. grams/cylin...
by blundar
Mon Sep 27, 2021 12:49 pm
Forum: Tuning Support: Making it Run
Topic: Auto-tune does not produce good results
Replies: 13
Views: 2165

Re: Auto-tune does not produce good results

If I understand you correctly, Nik, you're asking how much energy is needed to make the crankshaft spin before the engine actually starts doing the work of spinning the transmission? Frictional losses, accessory drive, lots of stuff go into this. I am going to go out on a limb and say "single d...
by blundar
Mon Sep 27, 2021 4:39 am
Forum: Tuning Support: Making it Run
Topic: Slides from a Tuning Class I once taught
Replies: 0
Views: 1630

Slides from a Tuning Class I once taught

I taught this class several times. Most of the folks in attendance knew how to turn wrenches but did not have a lot of prior tuning experience. The class was aimed at the Moates QuarterHorse for EECIV Ford applications, but I spent a day going over things that were general tuning concepts. The secon...
by blundar
Mon Sep 27, 2021 3:31 am
Forum: Tuning Support: Making it Run
Topic: MAF vs Speed Density, why do we prefer which one?
Replies: 21
Views: 3310

Re: MAF vs Speed Density, why do we prefer which one?

If I had to pick a MAF or a MAP sensor, I'd take a MAF any day of the week. MAF is inherently far more accurate for metering airflow in conditions where you can achieve or nearly achieve laminar flow. Choose your MAF wisely, mount it wisely, filter it as little as necessary. You know airflow. No gue...
by blundar
Sat Sep 18, 2021 3:09 am
Forum: Dev: Hardware
Topic: Hellen 125 Honda K
Replies: 3
Views: 592

Re: Hellen 125 Honda K

Everyone except me seem to think DBC K series are hot shit.

I am more of the DBW persuasion. So I will be tackling the 06-14 pinout(132). If it ends up a parallel effort to a Hellen, cool. If you end up tackling DBC connector/pinout(125), cool.
by blundar
Fri Jul 02, 2021 4:25 am
Forum: You and your build
Topic: '71 240Z w/ '82 280ZX L28 MRE project
Replies: 19
Views: 2815

Re: '71 240Z w/ '82 280ZX L28 MRE project

https://forums.hybridz.org/topic/115112-rb-efi-system-retrofitted-on-a-l28et/ There's a thread about putting a Z32 ECU on the L28ET. I wonder if you might be able to steal a few tricks to use to get a better engine speed sensor set? The nissan CAS are essentially optical hall effect. I'm jealous of ...
by blundar
Wed Jun 30, 2021 6:02 pm
Forum: You and your build
Topic: Rotary engine Rx8 in Florida
Replies: 66
Views: 7332

Re: Rotary engine Rx8

Translating from Andreyish (which is an unusual blend of jumble, english and russian): -You have been told to do certain specific things (use a certain bundle, use the ini retrieved from the rusefi controller to configure TunerStudio, take a screen capture showing sequence of events leading up to pr...
by blundar
Wed May 26, 2021 6:06 am
Forum: You and your build
Topic: 1997 Ford F-150 5.4 E4OD
Replies: 42
Views: 7651

Re: 1997 Ford F-150 5.4 E4OD

Part of the reason half bridges are used for higher speed switching vs. FET+diode is that the non-switched FET can act as an active flyback path, which is often termed synchronous rectification. The losses from a fully-on FET are current * Rds(on) whereas losses from diode are current * Vf. Combine ...
by blundar
Wed May 26, 2021 6:02 am
Forum: You and your build
Topic: 1997 Ford F-150 5.4 E4OD
Replies: 42
Views: 7651

Re: 1997 Ford F-150 5.4 E4OD

Another note: High-speed Schottky diodes are generally a good choice for the flyback diodes for relatively low switching speeds. Reverse voltage only needs to be margin of error > Vsupply which will give a great selection of parts. They're generally pretty fast. Be mindful of both PEAK and AVERAGE c...