What is needed to run with VEMS?

[a4kquattro]

The main problem for me is to drill a bigger hole in the IM, since it's attached already on the the cyl head. I can not find a way to make sure there are no left overs of the drilling metal on the inside of the IM, so it's a bit too risky for now.

How do you normally drill that bigger hole in the IM and what precautions should I take?

last time I did this I removed the throttle body, stuffed towels into the manifold behind the hole so nothing could fall backwards into the runners, greased the drill bit, and ran a vacuum at the throttle inlet. no shavings left behind, worked very well.

[Bram]

last time I did this I removed the throttle body, stuffed towels into the manifold behind the hole so nothing could fall backwards into the runners, greased the drill bit, and ran a vacuum at the throttle inlet. no shavings left behind, worked very well.

Yes, I see this can work. thanks for the practical tips!

[Jamo]

last time I did this I removed the throttle body, stuffed towels into the manifold behind the hole so nothing could fall backwards into the runners, greased the drill bit, and ran a vacuum at the throttle inlet. no shavings left behind, worked very well.

What size does the hole have to be enlarged too?

[a4kquattro]

What size does the hole have to be enlarged too?

IIRC, a 1/2" drill bit is what I used.

[Jamo]

IIRC, a 1/2" drill bit is what I used.

Cheers for the Info

[Jonas_R]

the other change was that the wiring for the vems PNP is for aan and not aby. its an ignition wire that can either be swapped or done in software.

GazzaG60:

Can you tell me more about this? Is it an ignition wire for one of the coils or what?

[GazzaG60]

yes.

cant rememebr the colour but 2 wires are in a different order for the coils. best done in software the changes.

you will have a missfire on an aby with an aan base map

[Jamo]

yes.

cant rememebr the colour but 2 wires are in a different order for the coils. best done in software the changes.

you will have a missfire on an aby with an aan base map

Are you sure about this? and what version does it apply to as I never had a problem in 1.127 upwards

[GazzaG60]

yes. i remember taking the basemap from marcel, the scematic from s2central and 2 ignition wires are different.

i chopped them lol and made it work. spoke to teppo and got an "internet slap" and told to do it in SW save cutting wires.

there were no aby vems when i did mine i could find. also lots used wire-in rather than PNP.

was 3 years ago now almost.

you had a correct basmap jamo. i had nothing. firmware on it was 1.0.xx a low one anyway.

[Jamo]

I've got basmaps from ABY and AAN and they are the same as I used an AAN config to go to version 1.1.68, I don't think this applies anymore to new ecu's or either that the builders are doing it automatically when building the ecu.

Pnanassy be able to confirm.

[GazzaG60]

like i say it was a long time ago.

being a newbie to vems at the time i felt my way around it and doing the wire mod helped me. then when i got a better basemap from teppo it went pete tongue on me and i learned more about the software.

i was new to I5 and its wiring then as id only had the car a few months.

its a negligable point now. just think jonus is trying to get the full picture.

[Jamo]

True, true

I think unless his VEMS ecu will be 2nd hand he'll be fine as the it's just a question to put to his retailer to sort on build.

[Jonas_R]

When I converted my 3B to multicoil setup I used Paul's excel ark to do the swap. The excel ark list the wiring for the coils to be the same for ABY/AAN/ADU.

I'm currently using an AAN ECU and I dont have any misfires. So what am I missing here?

Anyhow I bought my VEMS ECU for AAN sometime last year, things are just moving a bit slow getting it installed due to winter and a broken gearbox.

[GazzaG60]

its hard to remember but there was 1 wire different. its not an issue now anyway.

[QuattroFever]

can the IAT be installed before the throttle body? As long as its after the intercooler right?