Megasquirt ON BMW m52 Engine

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maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

Matt Cramer wrote:Required fuel is your base pulse width. Bigger injectors need less pulse width.
thanks. but now i think my problem is not because of settings.

i have sync loss below 1000 rpm now. some time ago i had loss after 3000 rpm, installed 10k resistor and the problem was fixed. but cant fix loss bellow 1000 rpm.

may wrong fuel or ignition settings be problem of sync loss under 1000 rpm? after 1000 everything works ok

that V3.57 mainboard kills me :(

http://www.youtube.com/watch?v=LRIZoXz8 ... e=youtu.be

strange.. and after 0:43 works ok at 1300 rpm
billr
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Re: Megasquirt ON BMW m52 Engine

Post by billr »

Again, no fuel settings and nothing in the ignition tables will cause sync loss. I think you have had wiring problems right from the beginning, a glance over this thread convinced me of that. I'll look again later, maybe I can ask some useful questions after more study.
Matt Cramer
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Re: Megasquirt ON BMW m52 Engine

Post by Matt Cramer »

Please post a tooth log of the sync loss.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

Matt Cramer wrote:Please post a tooth log of the sync loss.
hm, i've lost the log :) i'll record it again and post tomorrow.


one question about connecting ms to laptop.

my laptop has no com port, so i use this cable


Image


i get too much connection loss. once in 1-2 minute tunerstudio hangs, and says "not logged" or something like this...

maybe its better but com port to usb adapter? :RTFM:
maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

thats my new logs, sync loss under 1000 rpm.. after 1000 looks ok...

someone look please

i tried various configuration during this weeks but the same

note: the same was before that i've installed 10k resistor on crank signal, but then sync loss was after 3k rpm as well
Matt Cramer
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Re: Megasquirt ON BMW m52 Engine

Post by Matt Cramer »

This looks like a phantom tooth issue - try turning up the threshold adjustment pot.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

the pots are those white things yes?

http://msextra.com/forums/download/file.php?id=24252

can you say which one is the correct one?
Matt Cramer
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Re: Megasquirt ON BMW m52 Engine

Post by Matt Cramer »

Matt Cramer -1966 Dodge Dart slant six running on MS3X
maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

Matt Cramer wrote:Yes, see this link.

http://www.diyautotune.com/tech_article ... _index.htm
that was it. thanks :yeah!:

no more sync loss at all. now some tune left and i'm done
maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

hi again people.

could you tell me what Fuel load gauge shows in tunerstudio?

and how to measure injector usage? i mean how much % is used at the moment and can it flow any more or not.

i think i need bigger injectors and that's why i ask it.
billr
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Re: Megasquirt ON BMW m52 Engine

Post by billr »

It's been a while now, post current .msq and .msl files.
prof315
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Re: Megasquirt ON BMW m52 Engine

Post by prof315 »

maxo-tt1 wrote:hi again people.

could you tell me what Fuel load gauge shows in tunerstudio?

and how to measure injector usage? i mean how much % is used at the moment and can it flow any more or not.

i think i need bigger injectors and that's why i ask it.
Fuel load is just engine MAP (provided you are using MAP)

You need Injector DC% (duty cycle) and anything over 85% is too much i.e.time for bigger injectors.
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maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

prof315 wrote:
maxo-tt1 wrote:hi again people.

could you tell me what Fuel load gauge shows in tunerstudio?

and how to measure injector usage? i mean how much % is used at the moment and can it flow any more or not.

i think i need bigger injectors and that's why i ask it.
Fuel load is just engine MAP (provided you are using MAP)

You need Injector DC% (duty cycle) and anything over 85% is too much i.e.time for bigger injectors.
thanks.... i use 210 cc and 80% duty max... so i dont need new...

so it means i have another problem...
billr wrote:It's been a while now, post current .msq and .msl files.
nothing new in my msq... still can't tune it properly


p.s someone who has 2.8 tuned on ms3x can share your msq please?
maxo-tt1
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Re: Megasquirt ON BMW m52 Engine

Post by maxo-tt1 »

noone has m52 msq ? with stock injectors ? :(
TheRipper
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Re: Megasquirt ON BMW m52 Engine

Post by TheRipper »

Hi! I'm planning to install a MS3 on my BMW 328i 1996 (M52B28). Can you share your MSQ?

Is your car a 328i? What about the tacho? Is it CAN Bus driven? Or just a "normal" tacho output?


Sorry for the bad english.

Thanks!

Fábio.
passiw
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Re: Megasquirt ON BMW m52 Engine

Post by passiw »

Hi, I'm also planning to run my BMW E36 328i using the MS3.

@maxo-tt1: Is your engine now running well? If so, it would be great if you'd let us know what problems you encountered and how you could solve them! maybe even writing a small tutorial? :roll:
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