You can change the style the forum displays by selecting your preferred style at the bottom left of the site.
We have made an enhancement so that old threads should now link from search results to the correct thread. This is not yet in place for single post links
N80 is the EVAP purge valve, not the boost solenoid. If you have the Maxx plug-in then it is not connected.
You can easily use it though - set up a GPO with a PWM output and scale against MAP to activate the solenoid in vacuum, say 80kpa or less perhaps? Not sure how it is mapped in Motronic to be honest.
I have that mapped to open on overrun ie less than 35kpa and up to 2000rpm so then it shuts when idle kicks in. Therefore any fuel vapours go into the inlet at a point when you dont care what's happening in the engine.
On vems by the way, but I'm sure similar hardware and software can be implemented on maxx
Thanks for the info guys.
I've learned that the N80 is only closed upon activation right (12v?)?
So in my case since it is not controlled by the ECU it is wide open all the time...
Need to fix that.
Best way for wiring it up, new wiring from ECU to the valve or can I splice in on existing wiring inside the car in a simple way?
I have that mapped to open on overrun ie less than 35kpa and up to 2000rpm so then it shuts when idle kicks in. Therefore any fuel vapours go into the inlet at a point when you dont care what's happening in the engine.
On vems by the way, but I'm sure similar hardware and software can be implemented on maxx
Whats the benefits with that? Im running VEMS, where can you see that function is activated?
1995 Audi S6 - AAN (~350hp)
2008 BMW 530xd (235hp)
2008 Hyundai i30 - 1.6 CRDI (89hp)
2011 KTM 990 SMR - custom tuned (120whp)
Thanks for the info guys.
I've learned that the N80 is only closed upon activation right (12v?)?
So in my case since it is not controlled by the ECU it is wide open all the time...
Need to fix that.
Best way for wiring it up, new wiring from ECU to the valve or can I splice in on existing wiring inside the car in a simple way?
Well the pins the the Maxx Plug-in harness are not terminated, so you can just wire them to a spare GPO and 12v, or use a spare injector output (12v) and ground. I have done this but I used the N80 connector in the engine bay for a WMI injector instead.
Whats the benefits with that? Im running VEMS, where can you see that function is activated?
Needs to be done on the aux outputs. Benefit is that you are making use of an OEM system in case fumes are trapped in the tank. Otherwise like that makes no difference in the way the car runs as in overrun with a close throttle you dont care
Well the pins the the Maxx Plug-in harness are not terminated, so you can just wire them to a spare GPO and 12v, or use a spare injector output (12v) and ground. I have done this but I used the N80 connector in the engine bay for a WMI injector instead.
Excellent, thank you Alex.
I guess I'll have to find out where to splice in or make a new lead entirely.
If you take off the Maxx adapter harness you will see that on the Motronic connector side there are quite a few un-terminaled pins and these will connect through to the engine bay side via the OEM harness. So you just need to connect these to the spare GPO or Injector outputs as I said above. It is a little fiddly job but a tidy and nice solution
We process personal data about users of our site, through the use of cookies and other technologies, to deliver our services, personalize advertising, and to analyze site activity. We may share certain information about our users with our advertising and analytics partners. For additional details, refer to our Privacy Policy.
By clicking "I AGREE" below, you agree to our Privacy Policy and our personal data processing and cookie practices as described therein. You also acknowledge that this forum may be hosted outside your country and you consent to the collection, storage, and processing of your data in the country where this forum is hosted.
Comment