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In case you want to get your "economy control display"/"economy gauge" working.
Connect PIN 11 with PIN 20 (EC36) and enable PIN 20 in the VEMS tune injector table. Wiring VEMS --> Porsche 944 Eco Gauge Enable Injector 3, PIN 20 as a spare injector.
In case you want to get your "economy control display"/"economy gauge" working.
Connect PIN 11 with PIN 20 (EC36) and enable PIN 20 in the VEMS tune injector table.
Mine is wired in parralel with one pair of injectors:
I don't get how injectors are firing. I assume(I hope lol) that PNP kit is configured to run semi-sequential. Factory motronic is batch fire. Question is - now economy control gets signal from pair of injectors. Will it show accurate fuel consumption?
Another point - I have wasted spark coil. Early 944 tacho is wired in parralel with stock coil to pin 1. Now it's not connected anywhere. I assume I should wire tacho wire to pin 21 motronic connector(as in late cars) without changing anything in VEMS config
Mine is wired in parralel with one pair of injectors:
I don't get how injectors are firing. I assume(I hope lol) that PNP kit is configured to run semi-sequential. Factory motronic is batch fire. Question is - now economy control gets signal from pair of injectors. Will it show accurate fuel consumption?
Another point - I have wasted spark coil. Early 944 tacho is wired in parralel with stock coil to pin 1. Now it's not connected anywhere. I assume I should wire tacho wire to pin 21 motronic connector(as in late cars) without changing anything in VEMS config
- VEMS does also batch fire
- route the wire from pin 21 to tach (do not connect to coil green wire, it will fry the output of VEMS !)
- of course you have to configure VEMS for WS output
- when you take the eco gauge signal parallel from a pair of injectors, you won't get a clean signal without noise to the tach input. When you take the signal from a virtual (software enabled) injector, you get a clean signal.
- route the wire from pin 21 to tach (do not connect to coil green wire, it will fry the output of VEMS !)
Coil is out, stock ingition wires are "hanging in air", but I planned to connect tach seperatly anyway.
Originally Posted by H.F.B.
- of course you have to configure VEMS for WS output
Yep, I already did it. Coil wire is out, WS harness plugged into EC36. Ignition outputs configured accordingly. Still preparing car for start, few things left.
Originally Posted by H.F.B.
when you take the eco gauge signal parallel from a pair of injectors, you won't get a clean signal without noise to the tach input. When you take the signal from a virtual (software enabled) injector, you get a clean signal.
Thats how I received it from Peep. Will see if there any noticeable difference. Will add wire and change config if needed.
Originally Posted by H.F.B.
- VEMS does also batch fire
Are there any reasons why it's not configured as semi-sequential? As I understand no additional wiring and/or sensors needed. And it should be huge benefit over batch fire...
wasted
I dont care about the looks so i hooked wasted spark set here so i still have the original in place whit out cover if i ever need that again . Bought peeps vems set some years ago but havent had much time to play around it.
I've got my vems installed and the car is running, can't drive it yet because of some weird/stupid rules we got here in Denmark.
But I can't get my tacho and economy control display to work. The tacho jumps to 500 rpm and stays there, nothing happens with my economy control display.
Everything seems to be wired in the right way and vems set up should also be right.
4 hole pintle vs. 1 hole pintle injectors are always an improvement. This means better fuel atomization, so better cold start, idle, part throttle behaviour, fuel economy and driveability.
With the 4 hole injectors I could reduce VEMS start, afterstart and warmup enrichment significantly.
Apart from that, a modern engine management system and modern injectors are a nice package IMHO.
Edit: Found this pic.
Could you please share your current config with Volvo injectors and working economy gauge?
I've ordered same, they will arrive soon.
Already done 700 km (~400 miles) with VEMS, still struggling with some random issues, but overall everything is great