VEMS Ign. Table, how much advance ?

[A80Avant]

hmm. it says 30Nm in the manual. Of course it may have nothing to do with it

[th.b.w.]

Hi,

not more than 15-20NM.....

[A80Avant]

how much torque did you have on the spark plugs?

[A80Avant]

very unfortunate, seems likely a spark plug malfunction.

[th.b.w.]

Holy shi.....t,

a spark plug (Bosch F5DPOR) isolation was broken, has damadged a ex.valve, burned 2-3mm out of the steel, now i run only 4cylinders.....

came it from to agressive ign.timing ?
or high egt's (i haven't seen) ?
or fault spark plug ?

Thomas

[Jamo]

specsavers.........................

http://www.efiexpress.com/catalog/ar...?articles_id=1

Bottom of page, download tuning software http://www.efiexpress.com/downloads/....1.27_audi.zip

[th.b.w.]

Sorry, i can't see any vems / magatune maps....

Thomas

[Jamo]

On the efiexpress website under vems

[th.b.w.]

Hi jamo,

i run 3071 AR82, 2bar boost, comp.lowered to ~8,5:1, Wagner IM and ExM, etc.....

Where are the files ?

Thanks Thomas

[Jamo]

Download the megatune package on the EFIexpress website, it did have multiple example files in it.

What turbo are you running?

[th.b.w.]

Hi,

is only one ready to give an ign. table ?

Where are the other vems user ?

Please give a little help.....



Thomas

[GazzaG60]

im not a massive expert here now somebody can help.

personally i think its from hot conditions gonig on load around 2500-4 k. i think its small det. maybe somebody can confirm. maybe bad fuel, timing around the limit

the man who did skim my pistons at the shop said this too to confirm my suspision

my engine never seemed out of sorts at all always ran well. these pits are usually on the flat part of the piston jkust up from the dish.

[Billman]

checking plugs will help. also take a good torch ande shine down the plug hole. you will see small pitting on the piston if you have too much.

what is this pitting?

Ok found it!

What if an engine run lean and the pistons got these small marks but now runs fine? I have this on my motorcycle? Is it a problem???

[th.b.w.]

Thank you Billman for the ign. table.

Mine is in my album.

I have wired some earphones to the oem knock sensor.
When the engine is cold there is some noise over 4000 rpm.

When it get the right temp. ~ 90°, there is no knock i mean....

i runed with det cans last week, i cant hear any knock i mean....



P.S. perhaps there is an other user who can give an workable ign. map.


I dont want to copy that map, i only will get sense where the knock limit is to be +/- 2-3°


Thomas

[GazzaG60]

fair point. missed that.

id make up some cans and have a listen.

checking plugs will help. also take a good torch ande shine down the plug hole. you will see small pitting on the piston if you have too much.