Timing Fine Tuning

[CBDZ]

This may be cause I am still using MS1, but I can't find out how to fine tune my tuning to make sure that MS is matching the actual engine timing.

I have the trigger wheel kit from Mario, but I had to orientate the missing tooth different than his directions. My missing tooth is at 60* , and his instructions say to mount it at 42.5. I have used the Excel files that is downloaded from the MS-Extra site, and I have set my wheel decoder settings per the calculated values, but because the missing tooth is not exactly 11 teeth away from the sensor when at TDC, I need to make a fine adjustment.

I have found these instructions at DIY Autotune. http://www.diyautotune.com/tech_article ... how_to.htm I don't have any of the options or features that are indicated.

Is this just a matter of adjusting the "Trigger Angle" a few degrees to get where the timing in the timing map, and the actual reading with the timing light are the same?

[Piledriver]

The extra features/options shown are due to the that example running MS2Extra, and an ~ancient version at that.

Tweaking the offset is what is done on ms2e/ms3 but I don't want to steer you wrong, as I probably played with ms1 for about 20 minutes once before plugging in an ms2 daughtercard.

Just in case you have ever referenced the B&G megamanual, here is the right manual.
Forget the megamanual and B&G code exists... it will cause headaches.
http://www.msextra.com/doc/ms1extra/MS_ ... #wheeldecr

There is more work for setting up ign on ms1 than ms2e/3, which border on trivial.

[Humpty]

Digging up an old thread....

Long time no see fellas... I am in the setting up phase of am MS1-Extra/Mexi TB setup I bought off Mario way back in the day... It's been sitting on the shelf blinking at me, to do the deed.

So todays challenge is the timing adjustment.

I have the TunerStudio telling me timing is at 10 degrees at idle'ish (haven't quite achieved that either... It's drinking fuel and AFR's are screwed), but my light tells me its more like 16 degrees...

Assuming the trigger angle is where I need to do my adjustment, and it's currently set on 60, what amount should I be putting into that field to compensate for the discrepancy?

[jhoefer]

Digging up an old thread....

Long time no see fellas... I am in the setting up phase of am MS1-Extra/Mexi TB setup I bought off Mario way back in the day... It's been sitting on the shelf blinking at me, to do the deed.

So todays challenge is the timing adjustment.

I have the TunerStudio telling me timing is at 10 degrees at idle'ish (haven't quite achieved that either... It's drinking fuel and AFR's are screwed), but my light tells me its more like 16 degrees...

Assuming the trigger angle is where I need to do my adjustment, and it's currently set on 60, what amount should I be putting into that field to compensate for the discrepancy?

Assuming you have all your trigger settings correct, you'd set the "Fixed Angle" setting to 10. This guarantees the ECU is firing at 10 deg BTDC all the time. Then with your timing light going, you want to adjust the "Trigger Angle" until you actually see 10 deg BTDC with your timing light. Then set the "Fixed Angle" back to -10 to use the normal spark table again.

In your case, use 66, but verify with the timing light again after the change.

[Humpty]

Turns out the edis controller was cactus... Luckily I had a spare, so I changed it out, and all was right in the world. I now have full advance working. 60 seems to be about 7 degrees (according to the timing light) as it happens.

Tuning is progressing well.

Cheers for your response jhoefer!