Fiat/Lancia 2.0 16V 4-teeth crank + 2-teeth CAM triggering ?

[Pet]

Hi, Pls is already here some FW version, which supports this type of triggering (two pulses from cam + 4 pulses after 90deg from crank ) ?
Thanks a lot for the re.

  P

[Sprockets]

This sounds awfully like the cosworth style trigger.  Does the cam pulse have two triggers close together? This trigger is supported with the latest 1.1.x branch firmware.

-Gavin

[Pet]

Thanks for the fast respons. Yes, I think it's the same trigger; the cam pulses have 90deg gap between each other, here is a good explanation from one VEMS member : http://www.vems.hu/wiki/index.php?page=MembersPage%2FRubenAparici . But I am not able to find out, how to set trigger options exactly.
Pet

[[email protected]]

If you dig through the links on that page you find a link to some bloke called Zoltan, who has a link to this page:
http://www.vems.hu/wiki/index.php?page=InputTrigger%2FLanciaCosworth

It says to use 1.1.27 firmware or newer, so I'd look at doing some cranking tests on 1.1.27 and then running it on 1.1.44

[z0tya]

That page is outdated. The 1.1.27 wrong. We try 1.1.31-1.1.34 but these are wrong too, we have starting problems. Firmware Changes page say for 1.1.42: "Cosworth initial syncup sequence fixed. Hopefully no more backfire during cranking"
But I think it has enleaning problem.
We are not try newer version. So do try the last firmware. There are some hints about setup on my wiki, but I think some changes happened with firmware change.
Please inform me, if you have some success, thx:)

[[email protected]]

Ah! so you're the guy who did the Cosworth stuff, its interesting that you experience starting issues with this uneven trigger pattern, and Skassa has starting problems with his Subaru - which also has uneven trigger patterns.

[z0tya]

Yes, we spent lot of time with this, but we are using 36-1 on crank pulley, it has less problem:)
The webber-marelli was a sophisticated stuff in his own time (for example sequential injection) but no feedback from the engine, so we started to use vems for the famuos YB. There are 4-5 cars run this setup here in Hungary.

[Pet]

Thank you guys! I'll try some new FW and let you know with the result. P

[Pet]

Thank you guys! I'll try some new FW and let you know with the result. P

Sorry for this stupid question, but I am newbie with VEMS .... When I download 1.1.42 FW, this isn't complete package with upload-download BATs, configured Megatune etc. Is it here only one way how to upload this FW? I mean only by using Developement page, install GCC compiler, Perl...... and create own hex manually ?
Thanks.

[z0tya]

Put the firmware directory into a complete package. Or use newer complete package:
http://www.vems.hu/download/v3/firmware/