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

I am currently trying to megasquirt my 91 2.0 16v gti. After getting everything on the car I have no spark! Here is a list of everything I done.

MS2 v3 daughterboard from diy-autoune.
I have followed the steps on their website:

•Build the Hall effect input conditioner circuit, as described in Step 50A of the MegaManual. All our preassembled MegaSquirts with the V3.0 board come with this circuit installed.
•Jumper TachSelect to OptoIn.
•Jumper TSEL to OptoOut.
•Jumper XG1 to XG2.
•You'll need a 1K pull-up resistor from the 5 volts in the proto area to TachSelect.
•Jumper JS10 to IGBTIN.
•Install a BIP373 or TIP120 in the Q16 slot, using a mica insulator.
•Jumper IGBTOUT to IGN.
•Add a 1K pull-up to 5 volts by connecting a 1K resistor from the IGBTOUT-IGN jumper to a 5 volt supply from the proto area.

I also have the can communication jumpers installed if that makes a difference. js6-spr1/canh and js8-spr2/canl

I did not plan on using an ignition control module because I have
a bip373 in slot q16. Do I still need the 1k pull ups? Is that what is wrong? At DIY website is says "Note that this is not the Bosch 124 module covered in the MegaManual. You could optionally switch out your ignition module for the Bosch 124 and use the mods in the manual, OR put a BIP373 in the Q16 slot and use direct coil control.
http://www.megamanual.com/ms2/vb921.htm
Direct coil control, does this mean I will not be able to control timing? There is also NO instructions on doing any jumpers other than igbtin to js10 and igbtout to ign. Do I need to undo the rest of my jumpers and cut out my pull ups? My coil and distributor test ok. I don't think my ECU is receiving the signal cause it does not go to cranking or show any rpm in megatune although everything tests ok with my stimulater. I have a relay board and the hall sensor is wired up per timob: http://www.timbox.net/Link/2009/05-21_M ... ematic.gif
I have checked all wires, all correct and where they should be. I hope someone out there can help, my brain is so overwhelmed with so much of this mega stuff I don't know whats what anymore!!! THANKS!!!!!

You should not be using a pull-up on the output if this is controlling the coil directly (our directions were for using a module, not direct coil control). The input mods, however, should remain. Could you please post a copy of your MSQ (tune) file? I'd like to check the settings.

lol srry

When using a BIP373, spark output needs to be set to Going High / Inverted, not Going Low / Normal. You may have burned out your coil.

I should still get rpm while cranking on megatune right? When I crank there is no feed back in megatune.

Yes, you should get RPM while cranking. Do you get RPM on a Stimulator?

yes all test ok with stim. but i still have the pull up on the out, should i take that off?

You should have the pull up on the input but not the output.

ok i will take that off check my wireing for the 6th time change the ignition setting and retest my coil and hall sensor and make sure they are still working. I will let ya know!

Great news! Turns out my hall took a crap on me, was testing bad with my modis I have at work. Replaced it with one from rock auto for very cheap if anyone else is looking for one. I also found that behind the rubber boot of my connector to the distributer the wires are crossed. Fixed that, took off the 5k pull up on the igbt out and BAM! All works good. Thanks so very much for all the help. Now that I have spark I will try to get it started. I'll let ya know how it goes!