MicroSquirt.com read only forum (Jan.15,2018)

Sorry for the late !

A friend lent me an other fuel pump and it works better. I'm now waiting for a Walbro 255l/h. I think it will works better !

Thanks Lance,

My Injector (high impedance !) chars seems to be correct:

http://img814.imageshack.us/img814/4897/injector.jpg


The PWM time treshold is not the same as injector Opening Time but Megamanual says:

If you are running high-impedance injectors (greater than 10 Ohms), then set the ...

Ok, after looking at the log, I understand that the AFR goes lean when the duty cycle goes over 100%.

But, my problem is that 245cc injectors are pretty good for this set-up, I'm sure of that. They are often used on the same engine, with more boost without problem.
So, is there any bad setting wich ...

Oops, here is the datalog !

Hello,

I'm running on a 1272cc supercharged car (4 cylinder) with 245cc injectors.
It runs pretty well under 5800rpm but It goes lean over. Even if I put some higher value on high rpm, result is same.
First, I was thinking that my fuel pump was out of order, but when I check the datalog, I see that ...

Ok, I think you were right about the output polarity ! I change it from high to low, then approximatly recalibrate the trigger offset, and it seems to provide very good results !
I didn't have enough time to verify with timing light but, the engine runs very well (not going up and down at idle) and ...

I'm pretty sure about my timing light (I tried up two differents).
The problem is that as soon as I put some boost (above 2500rpm), I've got a lot of knock immediatly. The spark map is the same as my ECU, but no knock whit this one.
I used the trigger wizzard gauge, so Il will test with the regular ...

Here is the datalog. (Same MSQ, EGO was enable, but result is the same as disable)

My readings:
At 750rpm: 12° on timing light, 12° on gauge.
At 2750rpm: 54° on timing light, 24.5° on gauge.

I don't know if it's important, but there is 5° of static advance (running very well with VW ECU).

Thanks Grippo,
I'm comparing the trigger offset at idle (perfect match with the gauge) and at 2500rpm (more or less 30° of difference with the gauge).
I will check this tomorrow and post a datalog as soon as possible !

Hello,

Actually running with a MS on a 1272vw polo G40, I'm trying to set up the trigger offset with the trigger wizard tool.
The problem is that the offset is perfect at low rpm, and when I want to go higher (>2500rpm), the offset is not equal to the timing ligth reading. Difference is nearly 30Â ...