TheScaryOne

iTrader: (3)

If anyone wants to sink their own teeth into this, I have a set of the coils Fab9 uses, as well as a hitachi variant of the module, also harness connectors, etc. I also have a second set of the Denso coils from a different application. Other than overall length, I don't know what the difference is. As Fab9 has been saying, Denso is extremely tight lipped about these.

If you'd promise to send them back when you were done, I'd send them out to an interested party for science.

DaveC

I'll take 'em Tyler, and return them in a reasonable amount of time.

I just want to figure out what it takes to make these coils and modules work. I don't claim to be an expert on ignitions, but I understand the physics and can make precise and reliable measurements of all kinds. The results of the measurements will be for all.

It's too bad this thread turned sour. I don't blame anyone (maybe Impuls, jk!) It can be difficult when people's livelihoods are involved; it's almost impossible for it not to seem personal. I've seen it many times in many forums and many contexts. To the people that feel involved: maybe chill for a day or two before posting again?

18psi

iTrader: (76)

I just wanted to say - though you're just joking there really is a bit of truth in there. This car has had weird electrical gremlins since as long as I can remember. Jumpy tach, radio not turning off, etc etc etc. Its all in his biuld thread I think, and in the videos he took of this car way back when.

So I think there's a good chance that other issues may be the root cause of this, and its not as specific to these cops and this megasquirt.

But who knows, I'm just watching this from the sidelines.

sixshooter

iTrader: (12)

I have seen the Impuls car in person and there has been an engine swap to an MSM motor and there are unused wires dangling all over the place underhood from the two harnesses being mated together. It is less than ideal for troubleshooting.

Impuls

iTrader: (1)

Hey hey now :P the only harness being used from the MSM is for its COP everything else is 99. Writing isn't THAT bad. I do hate worrying though, so when it works it stays. Unless I pull the engine and have the time to work and make a nice wiring harness, I don't have time for dat.

I only have 10afr @ WOT because the crazy MAT correction I have to run makes it hard to tune sometimes and I haven't been able to tune 5th gear because of blowout.
I lowered dwell to 1.5ms and seems to be running very well. I only got blowout from the module getting hot. So lower the dwell seemed wise.

I have a replacement Bosch 211(from O'reilly auto parts) I might give a shot.

I looked at the logic driver mod for microsquirt linked from the bosch 211 microsquirt website. I dunno if ms2pnp already has it done or not.

Impuls

iTrader: (1)

Jumping gauges - water/humidity damage from the common problem of leaking window seals

Radio staying on - Power loop because my 12v ignition on signal comes from radio to turn fans on (being powered from battery)

I agree though my car seems to be an electrical nightmare or just tends to have gremlins.

FAB

iTrader: (4)

Also in full disclosure - that module is not mounted in Impuls car, it's just hanging out. Even the Bosch 211 data sheet states that it must be mounted to a metal surface to properly dissipate the heat it produces. The 211 modules are usually attached using thermal paste too.

If I had to guess it's related to the thermal properties of that module. The car fires strong until that module starts to cook. Florida weather and a boosted Miata engine bay doesn't provide the most ideal environment, especially when it's not mounted.

Braineack

iTrader: (62)

so impuls is pretty much a horrible person

EO2K

iTrader: (37)

Come to think of it, this is starting to sound exactly like the same exact problem you get when using a GM HEI module as a ignition driver and not using the proper heatsink/grounding.

Bolt that thing to a sizeable block of aluminum and then bolt that block to the firewall or something. I bet your **** stops freaking out.

TheScaryOne

iTrader: (3)

I have a GM vehicle that uses said GM HEI module. It can cook itself while mounted on the dizzy on a nice hot day here in AZ on a bone stock 350.

FAB

iTrader: (4)

Some vehicles that use the Bosch modules actually use a dedicated heat sink.

This is mounted to a punched out piece of metal in the engine bay. The 211 module mounts to the other side.

TheScaryOne

iTrader: (3)

Not just mounted in the engine bay. The heatsink is mounted in the airbox, to constantly have air moving over it. I was going to screw it to the firewall, and then use some heatsink glue to glue a heatsink in the cowl behind it.

Impuls

iTrader: (1)

Yeah I've been waiting to settle the initial problem before permanently mounting it.
Gotta find a heatsink.

BUT NOW WITH MORE ALLOFIT

EO2K

iTrader: (37)

This thread just went full Florida

TheScaryOne

iTrader: (3)

Step 1: Go to local computer store
Step 2: Ask to browse through their old garbage
Step 3: Find flat copper heatsink
Step 4: ???
Step 5: Profit

sixshooter

iTrader: (12)

FTFY

TheScaryOne

iTrader: (3)

Instructions unclear. Dick stuck in CPU fan.

Edit: And I specified flat, because something like this

would work well, whereas something like this

would probably not.

Impuls

iTrader: (1)

I was notified from my buddy that builds primarily Euros, that with that module I NEED heatsink. I can just go to the junkyard and find it on 80's era VWs it's very specific year ranges though.
According to http://www.microsquirt.info/Bosch_211.htm
It says use:
Ignition Input Capture - Falling Edge
But my car did NOT like that.

Also is this need the mod needed http://www.microsquirt.info/us_logic_level_spark.htm
Or MS2PnP already have that?

Impuls

iTrader: (1)

For those that question FAB9's module
I tried a a replacement(from o'reilly) bosch 211 unit, just to clarify accusations, it worked great until I drove for almost an hour yesterday. Started breaking up at 10psi last night.
Need heatsink so bad. But now I can't go to the junkyard tomorrow. Since I got a ticket for not having a Florida license, gotta go take care of that.