Car won't start Whodwho Ms2/Extra

[downforce22]

When I originally got the pnp unit it would start my car but my tach would be reading half of the rpm.

Eventually I found out I was using an out of date firmware. I updated my firmware and my old .msq file had many errors.

Now that I have updated my firmware, I am running version 3.3.3 instead of 3.1.1. Only problem is the car won't start.

It is a stroked m20 running 14# injectors, AFM, and original TPS. Car starts and runs fine with 173 ecu but won't crank with the ms2. I think it is a fuel or spark issue but am not sure. Any chance you could look at my tune and help me out?

Also my tps sensor won't calibrate. That is why it is hovering at 70% or so

Here are a couple of screen shots of my tune. Looks like I can't attach a .zip file

[BMWManiac]

This is the reason I refuse to update my firmware!

Aside from that, will the car start if you give it gas? Post up a pic of your VE, AFR target, and Ignition tables

[whodwho]

Looks like you have the wrong firmware loaded, the spark output should be IGN1 not D14 that is a not a microsquirt setting.

Why didn't you hit me up?!?!

Hit me up on PM or w h o d w h o @ c o x . n e t and lets get this thing up and running right!

kth

[downforce22]

I sent an email but haven't head back.

Looks like my firmware doesn't allow me to enable to the microsquirt module anymore.

Will the Microsquirt-IO Box Firmware fix my problems?

http://www.msextra.com/downloads/

What firmware do I need?

[downforce22]

So i just tried updating the .ini files with the 4 in the 3.3.3 firmware update and they wouldn't give me the option for the microsquirt module.

Any ideas? Here is what I see when I open the project properties.

[whodwho]

sorry I could of sworn I replied to you, I will dig them up in the morning and read/reply them again 8^(

The later firmwares wont have that option, it figures it out when you apply the firmware

Just check that you have a IGN1 for a spark option

[downforce22]

sorry I could of sworn I replied to you, I will dig them up in the morning and read/reply them again 8^(

The later firmwares wont have that option, it figures it out when you apply the firmware

Just check that you have a IGN1 for a spark option

She lives! Something I did fixed it I guess. It was idling very rich ~10 or so. I reduced required fuel and have it idling right around 14.7.

It seems my AEM UEGO wideband isnt registering in tunerstudio right because my Air:fuel ratio 1 parameter doesn't change. I have it set up with a wideband with the local setting. It is set as PID. Do I want to leave it as a simple algorithm? I thought I had seen an adjustment for tuning the algorithm specific to the wideband.

Anyway, I have some tuning ahead of me!

[EatsHondas]

Don't change req-fuel to fix a tuning problem. That's your global fuel constant (open injector time measured in milliseconds) to help calculate volumetric efficiency. Changing it will affect your entire map. Put it back to the proper value, then go into your VE table and lean out the numbers in the appropriate cells until you like your idle. The smoothest idle is generally on the richer side of stoich.

The full version of Tunerstudio has an autotune feature for your VE table and warmup enrichment. They both work great, definitely worth the money if you're trying to tune on the street.

The PID/simple settings are for EGO closed-loop control only. When activated, your ECU will do its best to run the engine according to the values in the AFR table. It's a very powerful feature, but should not be used as a band-aid for a rough tune. That's what the auto tune ("VE Analyze") is for. You shouldn't use your wideband for closed loop until you are happy with your VE and AFR tables. EGO control is designed to provide minor fueling changes based on variables that will be constantly changing (intake temp, barometric pressure, etc.)

[downforce22]

Don't change req-fuel to fix a tuning problem. That's your global fuel constant (open injector time measured in milliseconds) to help calculate volumetric efficiency. Changing it will affect your entire map. Put it back to the proper value, then go into your VE table and lean out the numbers in the appropriate cells until you like your idle. The smoothest idle is generally on the richer side of stoich.

The full version of Tunerstudio has an autotune feature for your VE table and warmup enrichment. They both work great, definitely worth the money if you're trying to tune on the street.

The PID/simple settings are for EGO closed-loop control only. When activated, your ECU will do its best to run the engine according to the values in the AFR table. It's a very powerful feature, but should not be used as a band-aid for a rough tune. That's what the auto tune ("VE Analyze") is for. You shouldn't use your wideband for closed loop until you are happy with your VE and AFR tables. EGO control is designed to provide minor fueling changes based on variables that will be constantly changing (intake temp, barometric pressure, etc.)

Thanks for the feedback eats. I did a lot of testing today and it looks like I have 2 issues.

1. My AEM Uego wideband is not registering. It is reading on my gauge but not in Tunerstudio. I even input a custom 0-5V calibration for the P0 mode of the gauge and it still does not register. (it stays at 10, which is the same as 0 volts)

http://www.schnitzracing.com/manuals/AEMWBK.pdf

2. The TPS will not calibrate correctly and keeps resetting after I depress it about 70%. Looking at the feed it draws a lot of voltage from the battery right when it happens. I hear a click and a buzz for a second or two as something is resetting. Could it be the walbro 255 pump?

I have an early model throttle like this:
Part number 24 is BMW number 13631710559
Which is the same part number as all m20 engines. The tps current at closed is 0 but as I open it, it keep rising even when I hold the pedal in the same location. I can't set the current at 100% open because something resets and the TPS goes to 0. I may try to get a spare from the junkyard but I have the e36 vtps sitting here waiting.

Any ideas?

[EatsHondas]

How did you hook up your wideband? Where is your switched power source coming from? Where are you grounding (both for 02 signal and power supplies)? Are you sure the 02 signal wire is running into pin 23 on the MS?

You cannot use the part number you posted. That's a throttle position switch, not a variable sensor. It doesn't tell the ECU how much the throttle is open. It only knows the difference between fully closed, fully open, and somewhere in between. The easiest way is to use an e36 tps, probably like the one you have, which gives the ECU a linear resistance change (ie infinitely variable). My setup looks like the attachment, except with much more precision.

[EatsHondas]

Here's some extra stuff that helped me. Hope you've figured everything out man, PM me if she still won't cooperate!

[downforce22]

Thanks for the feedback on this. I am not sure why I wasn't getting a signal but after disconnecting and reconnecting the o2 sensor and grounding the sensor to the chassis it worked. I also swapped the tps to the e36 vtps. In doing that you have to swap some wires to make it work.

Once I did that, my oxygen sensor works fine and the tps does not short out anymore.

[EatsHondas]

Hell yeah man, get a nasty street tune on her and drive it!