Steve's Megasquirt/tunerstudio Help Thread

Davedacarpainter said:

My car will be carburated. But what a great thread man. Helping to take out some of the voodoo black magic mystery to programming.

Outstanding idea on your part.

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People will discount your intelligence Dave,...and not let you play any of their Reindeer games if you show up at the party with a carburetor on your engine. Speaking from experience, the F.I. snobs will look at your car,....look at your engine, see that it has an air cleaner, and a carb on it,...then ......sniff,...pull up their pants a little at the waist, and say/ask:

1. Everything was going great till I saw the carb,..then It ruined it for me.
2. Do yourself a favor, and put the F.I. back on.
3. Why did you take off the F.I.?
4. Your car will run alot better if you dump that carb.
5. Any plans to restore the F.I.?

Blahdy, blah, blah...

madmike1157 said:

People will discount your intelligence Dave,...and not let you play any of their Reindeer games if you show up at the party with a carburetor on your engine. Speaking from experience, the F.I. snobs will look at your car,....look at your engine, see that it has an air cleaner, and a carb on it,...then ......sniff,...pull up their pants a little at the waist, and say/ask:

1. Everything was going great till I saw the carb,..then It ruined it for me.
2. Do yourself a favor, and put the F.I. back on.
3. Why did you take off the F.I.?
4. Your car will run alot better if you dump that carb.
5. Any plans to restore the F.I.?

Blahdy, blah, blah...

Click to expand...

I know, who gives a sh*t? I like it.

I'm not knocking efi, just want a carb.

Nothing wrong with a properly tuned carb setup. In fact you can install a wb o2 setup for tuning. This is how we do the dedicated racecar.

So I bought my MSPNP today, but didn't spring for the Wideband yet as it'll be easy to sneak that into the bank statement in a few weeks... Gonna try to just get it running better without the WB02 for now. I'm sure I'll have questions next week when it hopefully arrives.

bird_dog0347 said:

So I bought my MSPNP today, but didn't spring for the Wideband yet as it'll be easy to sneak that into the bank statement in a few weeks... Gonna try to just get it running better without the WB02 for now. I'm sure I'll have questions next week when it hopefully arrives.

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Hmm your gonna have to use carb method. Let the plugs tell you what's going on.

So a quick question here... the instructions at the link below say to set the base timing to 12 degrees, but in this thread I see 10 recommended. That said... should I set it at 12 with the spout out using the A9L now and then follow these directions from the link below?

Connect a timing light on the cylinder #1 spark plug wire. Use all due caution here, as secondary ignition voltage can be as high as 100,000 volts or more. Also ensure that the timing light's cords can not get tangled in moving engine parts or burned on hot components.

Make sure your tuning laptop is connected to your MSPNP and start your vehicle. If you have not already done so, start TunerStudio MS or TunerStudio Lite. Make sure that your laptop connects to the MSPNP and you are online.

Navigate to the Ignition Settings -> Ignition Options/Decoder Wheel (For v1.2 MSPNP2s, go to Basic Setup -> More Ignition Settings). If "Fixed Advance" is set to "Use Table", set it to "Fixed timing". This will tell the MSPNP to ignore the ignition table and hold a fixed advance angle. Set this value to 12.0 degrees. Burn these changes and close this menu. (Ignore the sections not highlighted in blue rectangles.)

Use a timing light to confirm that you have 12 degrees of timing at the crank pulley -- If you have more timing, decrease the "Trigger Angle" value under the "Basic Setup -> Ignition Options" dialog box. If you have less, increase this value.

Close the "Ignition Options" dialog and go back to the "More Ignition Settings" menu under the "Basic Setup" tab. Set "Fixed Advance" back to "Use Table". Burn and close this menu. Cycle power to the MSPNP (turn the car off and back on). The MSPNP is now commanding timing advance based on the ignition table.




http://www.megasquirtpnp.com/docs/mspnp_g2_eec4a8.php?isModel=1

Again, said screw it and ordered the Innovate LC-2 and Blue gauge kit from Amazon for $177 shipped.

I use 10* and the method described in the article that you placed. I used 10 degrees because that's the lowest I want to be able to return the timing too if you said it to say 16 than 16 is the lowest the timing can go.


That said you could even set it as low as zero and get them to match this would allow you to retard the timing to zero if you set the base timing with the spout out to 12:12 is the lowest that you can retard the timing to in the programming

Ok, so on my MS unit it just plugs right into the stock harness and I'm trying determine where to wire the LC-2 controller into the MS unit. Do I need to cut/solder/splice a wire on the original harness to connect it or use the secondary connector and wire it into that?

The secondary connector is thus far unused and not needed.

bird_dog0347 said:

Ok, so on my MS unit it just plugs right into the stock harness and I'm trying determine where to wire the LC-2 controller into the MS unit. Do I need to cut/solder/splice a wire on the original harness to connect it or use the secondary connector and wire it into that?

The secondary connector is thus far unused and not needed.

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Very good question. Is there no instructions that came with the MSPNP? I know there are some similarities between PiMP and MSPNP but not sure if this is one of them. For PiMP i had to cut the wire that the factory 02 sensors used (pin 29) and solder my WB controller wire to it.

This is what I saw on the DIY site, but not in the instructions that are specific to a foxbody. I have seen where others connected to pin 29... what color is that do you know?

Wideband O2 Sensor and Controller
The MSPNP2 supports many common wideband oxygen sensor systems, including the Innovate Motorsports LC-1 and MTX-L products, the Zietronix ZT-2 and ZT-3 (among others), and most other systems that provide a programmable analog voltage output. You will need to install the controller according to the manufacturer's directions and then connect the MSPNP2 to a programmable analog output from the wideband sensor's controller. You should ground the wideband to the engine block near the factory ECU ground wire to ensure an accurate reading.

There are two ways of connecting the controller to the MSPNP2. You can either connect the analog output to the pin labeled Oxygen Sensor input of the option connector, or you can cut and splice the oxygen sensor signal wire to the analog output. If you use this pin for wideband input, you must disconnect the stock oxygen sensor. Do not ground the oxygen sensor wire if you disconnect it; leave it completely unconnected and taped off if necessary (make sure it can't short to ground or anything else).

After connecting the wideband sensor controller, you will need to change a few settings on the MSPNP2. Section Four has the details of how to change this.

bird_dog0347 said:

This is what I saw on the DIY site, but not in the instructions that are specific to a foxbody. I have seen where others connected to pin 29... what color is that do you know?

Wideband O2 Sensor and Controller
The MSPNP2 supports many common wideband oxygen sensor systems, including the Innovate Motorsports LC-1 and MTX-L products, the Zietronix ZT-2 and ZT-3 (among others), and most other systems that provide a programmable analog voltage output. You will need to install the controller according to the manufacturer's directions and then connect the MSPNP2 to a programmable analog output from the wideband sensor's controller. You should ground the wideband to the engine block near the factory ECU ground wire to ensure an accurate reading.

There are two ways of connecting the controller to the MSPNP2. You can either connect the analog output to the pin labeled Oxygen Sensor input of the option connector, or you can cut and splice the oxygen sensor signal wire to the analog output. If you use this pin for wideband input, you must disconnect the stock oxygen sensor. Do not ground the oxygen sensor wire if you disconnect it; leave it completely unconnected and taped off if necessary (make sure it can't short to ground or anything else).

After connecting the wideband sensor controller, you will need to change a few settings on the MSPNP2. Section Four has the details of how to change this.

Click to expand...

Pin 29 is (EDIT) but it's hard to locate because the numbers are nearly impossible to follow on the plug. I had to use Jrichkers EEC pin out diagram to locate it which worked great. Cut (or splice) several inches away from the harness connector.

Edit: Correction, pin 29 color for a 1992 EEC is gray/lt blue

awesome, thanks!

FoxMustangLvr said:

Pin 29 is (EDIT) but it's hard to locate because the numbers are nearly impossible to follow on the plug. I had to use Jrichkers EEC pin out diagram to locate it which worked great. Cut (or splice) several inches away from the harness connector.

Edit: Correction, pin 29 color for a 1992 EEC is gray/lt blue

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How are they hard to follow? There is 60 pins. 3 rows of 20.

1-20
21-40
41-60.

And 20,40,60 are all grounds.

addermk2 said:

How are they hard to follow? There is 60 pins. 3 rows of 20.

1-20
21-40
41-60.

And 20,40,60 are all grounds.

Click to expand...

I was trying to say that reading the tiny numbers on the connector and then counting inward to the desired pin is difficult especially if you don't have good lighting. I had to cut back the harness wrap pretty far just to spread the wires out enough to see down in there.

Once you get that hooked up, you will need to set the wb settings up in the tools menu.

For the ms to have any usable input from wb your afr table must be built and active. When you first start tuning DO NOT use the auto tune function, data log the drive and make the changes using the algebra function....... I posted the basic math ratio method earlier in this thread, it is the most accurate way to tune the car. Then you can let auto tune do its thing with the cruise portions that are difficult to ratio.

Good luck!