Euro emissions?

[19psi]

I know this is a long shot, but has anyone taken a Euro in for an emissions test and if so what kind of ppm #s did it score?

Spring is here and some deals are popping up locally. 85 dual dizzy, 5 speed and looks well kept from the pics. 99K miles. Rebuilt title from 1996 But the price seems reasonable at $4900 or best offer. No garage queen but might make one hell of an around town car that I don't have to worry about. I'm betting the OBO may go along way with that rebuilt title.

Biggest issue would be the emissions. Only visuals here are a cat and a gas cap test. If it then passes the sampling test you're good to go.
Would this car have an O2 sensor? If so then I'm thinking it would easily pass with a cat.
Plan B would be to register it to a PO Box in the next county, although contrary to what people tell me, I have my doubts that really works.

Then there's a nice 87 S4 for under $8K. So many 87s...economy must have been great that year.
No mention if it's an auto or 5 speed. 100K miles.

S4 is what I've been shopping around for, but the Euro just has that cool-mysterious-bad ass factor And from what I've read, it'll destroy an S4.

[DougM]

I have a '84 Euro S which is the same setup. Mine has no cats or O2 sensor. However, some were fitted during federalization with a little box in the CE panel. I have no idea how it would do in a sniffer test. I do know that when properly sorted you can easily lean it out by the adjustment screw on the throttle body. May be able to drive there, pull over, lean it out for the test and then turn it back up. It may help some.
This salvage car is currently being discussed on RL.

[19psi]

Thanks for the info. Just looked up the discussion on RL.
After reading the shop manuals, I was thinking about leaning it out temporarily. I actually have some CO and O2 analyzers that could help dial it in. Just have to not overdo it as they run the car on a dyno during the emissions test.

This is one I need to step back and think over. Could end up a fun DD or a waste of time and money that I can't get licensed.

[MPDano]

Originally Posted by 19psi

Thanks for the info. Just looked up the discussion on RL.
After reading the shop manuals, I was thinking about leaning it out temporarily. I actually have some CO and O2 analyzers that could help dial it in. Just have to not overdo it as they run the car on a dyno during the emissions test.

This is one I need to step back and think over. Could end up a fun DD or a waste of time and money that I can't get licensed.

Careful with leaning too much. This will raise your Nox. Ask me how I know this.

[neil30076]

My 84 euro failed here in CA, new CAT's no O2 ( 84 euro's are open loop ) I never did get it to pass, failed HC and NO whatever i set the mixture at.
See below for results:

[wallstreet]

In MN we HAD sniff test. I had a 1984 944 auto. It did not pass. I dis-connected the
O2 plug at the firewall and it passed.
Next if it is a 1984 euro OR a 1985 would it be exempt if it had collector plate or not?

Originally Posted by 19psi

Thanks for the info. Just looked up the discussion on RL.
After reading the shop manuals, I was thinking about leaning it out temporarily. I actually have some CO and O2 analyzers that could help dial it in. Just have to not overdo it as they run the car on a dyno during the emissions test.

This is one I need to step back and think over. Could end up a fun DD or a waste of time and money that I can't get licensed.

[wallstreet]

Plan sounds risky if not illegal.

Originally Posted by 19psi

snip...Plan B would be to register it to a PO Box in the next county, although contrary to what people tell me, I have my doubts that really works.

[19psi]

Originally Posted by neil30076

My 84 euro failed here in CA, new CAT's no O2 ( 84 euro's are open loop ) I never did get it to pass, failed HC and NO whatever i set the mixture at.
See below for results:

Thanks! That's exactly what I was looking for. I need to dig up one of my last tests and see what our maximum limits are.

[19psi]

Originally Posted by wallstreet

In MN we HAD sniff test. I had a 1984 944 auto. It did not pass. I dis-connected the
O2 plug at the firewall and it passed.
Next if it is a 1984 euro OR a 1985 would it be exempt if it had collector plate or not?

1975 and older is exempt here. Also trucks like my E350 Super Duty with a 9001 lb gross vehicle weight or heavier are exempt. They did close up a loophole where people were buying 10,000 lb license plates for their little Toyotas, S10s and Rangers. When I brought my E350 in for its first test a few months back they looked at the door jam tag and permanently exempted it.

The collector plate is a good idea and something to look into. No mention of getting out of testing on the BMV site, will need to make some calls. I do however like the idea that I can buy an original 1982 Indiana plate and use it on my car.

[neil30076]

Originally Posted by 19psi

Thanks! That's exactly what I was looking for. I need to dig up one of my last tests and see what our maximum limits are.

this is what a clean 86 looks like:

[19psi]

Excellent, thanks for taking the time to post those. Quite a difference, thought it might squeak by with a cat in place but apparently not even close. Did you lean it out to pass other parts which then caused the higher combustion temps leading to the very high NOx levels?
That was the reality check I needed.

[neil30076]

Look at the CO2 numbers, the 86 was closer to the optimum than the 84, the 84 was way to lean, and i could never get it back in range. I used the Innovate logger with an O2 sensor installed in the exhaust, and the only time it showed really lean and when it failed the tests was at the 15 and 25 mph they require here in CA, which was under a no load situation occurred in 3rd (it is an auto) . I got the test station to run the same test with the car held in 1st and it would have passed, but that's not allowed!

>>>>The collector plate is a good idea and something to look into. No mention of getting out of testing on the BMV site, will need to make some calls. I do however like the idea that I can buy an original 1982 Indiana plate and use it on my car.
<<<<
also, I do have the original 1981 plates for my (other) 81 928, but in CA if you let them expire or move out of state they will not renew them, so i have personal plates on all my cars now.

[wallstreet]

Originally Posted by 19psi

snip...The collector plate is a good idea and something to look into. No mention of getting out of testing on the BMV site, will need to make some calls. I do however like the idea that I can buy an original 1982 Indiana plate and use it on my car.

In MN the collector plate shows "COLLECTOR". They are permanent . We no longer have sniff tersts. They never made changes to justify the expense. I have my 1986 944 plated as collector. I have heard about using a "year " plate.
Is this you Weissach?

[19psi]

Unlikely mine but it's now my new background wallpaper. 928s look like art from any angle. It was owned by a woman whose father bought it for her as a 21st birthday present and she was never active in any Porsche communities from what I can tell. There's a bit more to the story as I bought the car through her mechanic who owns a high end garage and only talked to her once on the phone. Initially her mechanic was to buy it for himself and it gets strange after that...soap opera like.

[Danglerb]

So far NOX looks like the troublemaker for a Euro S. I suspect its a combination of things not working as they should, mostly some cylinders rich and some lean.

The stock 84/86 Euro S brain has no O2 sensor circuits, so some kind of "box" gets added at federalizing, and mostly I think those boxes are cheap junk and I never see two the same.

My 85 Euro S passed within a few percent of the max NOX, and I have no idea how it will do on my next attempt, but I "hope" sharktuning will help along with a new MAF. I don't use a Euro brain though, I use a US 86 brain with some special fuel map chips from John Speake Porsche Electronics Specialist - JDSPorsche so I do have an active o2 circuit.

Running well, as in 100% well, I think the 928 in all forms has tested very clean with some passing even without cats if its just a sniffer test. Early cats don't clean up NOX well afaik.