Trigger Problem

[Thuppu]

Yea, but many have problems with Vems and stock triggers. The problem usually appears on very high rpm's. The VW Lupo trigger is defenitely a good upgrade.

[QuattroFever]

just not too much then you will damage sensors

BTDT

[QuattroFever]

Lupo trigger mod is 60-2 wheel behind flywheel?

[murat]

Here is a log file from 29 october

I dont want to hassle with 60-2, I want to continue with original. Maybe find a way to improve the signal quality

Thanks for help

[roger shaw]

Hi

running vems on an ABY engine,modified

when I was trying to get it to run I also had a lot of trigger errors,7A flywheel

this may help or not,fitted a good earth strap from the cam cover to the chassis

trigger errors went away but if I log the triggers it is still missing the triggers

the pin on the flywheel is 4mm(7A flywheel)

the pin on the ABY duel mass flywheel is 6mm(cast into the flywheel)

does not sound alot but is a massive difference in the flesh

this was not a perminant solution as I am going to make a piece of tube to fit the pin and weld it on

but the engine not runs ok with no missfires

hope this helps

Roger

[kamuto]

there isn't any trigger error in your log

[roger shaw]

when looking at the log file

on tickover all is ok

when increasing the revs there is gaps in the log and missfires

this was before the extra earth strap was fitted

also when trying to get rid of the trigger erors I used 3 x different sets of vr sensors and they were all the same

I did try running with the sensor touching the flywheel,could hear it rubbing,that made no difference

Roger

[murat]

there isn't any trigger error in your log

But why do have this rev counter hesitation then?
I always thought it was trigger error

[Takumi]

got this 'issue' in the same rev range as yours...maybe it's just related with tacho/VEMS output signal noise etc...

[V6quattro]

Here is a log file from 29 october

I dont want to hassle with 60-2, I want to continue with original. Maybe find a way to improve the signal quality

Thanks for help

Hassle with a 60-2? 60-2 works perfect for my. Just fit one and never look back!

[Billman]

I can't open this log....it crashes everytime I try to open it (maybe bad CRC while downloading or something) but can it be that your VEMStune has a low baudrate setting and it logs too slow up there?

[murat]

I log with 19200 i think

My vemstune is always uptodate using manual update. If you are not updating manually, that can be the problem.

[Billman]

no, mine is also up to date and I had trigger issues before because of the 7A flywheel pin. I try again to download your log on another PC.

Edit: I had to update manually!

[Billman]

There is a communication error man...the log jumps i.e. 7:08 to 7:10 in a blink of an eye.....

[Erikk]

Probably noise from ignition system. Bad ignitioncoil grounding? Try changing plugs to the ones with buildt in resistors.
How are the condition of the rubberseal/whatever thats between the coil and plug ?