I drive 1994 318is that will not pass smog at 15 mph. It does pass at 25 mph. I have already changed the spark plugs (the wires looked fine as did the air filter) and it barely changed the numbers on my NOx and HC. I am not driving it daily because it is not registered because of not being able to pass SMOG. Any suggestions on what I can do to pass? Here are my numbers:
nox is caused by high combustion temps, so i'd suggest a can of seafoam through the intake. clean out the carbon.
also, i'd replace the o2 if you do not kow how old it is. it costs less to replace it than to have it scoped at a shop.
check your fan clutch as well, and in the end, if nox does not change, you may need to replace the cat.
try search first..
Last time I had the fail at 15, pass at 25 (my Saab), I tried everything else first and ended up haing to replace the cat. I found a "generic' muffler/exhaust shop that provided and replaced it for $190. I just called out of curiosity and found same price for my BMW.
Not only did my Saab then pass at 15, it improved readings at 25...and my gas mileage.
I hope im not bringing this thread back from the dead.
Im due in CA for SMOG once again..
Pretty tired of jumping through hoops for the C.A.R.B.
(That's the California Air Resources Board for you E36'ers back east..)
What a F@#!% joke..
There is even a group who is trying their damnedest to expose the facade.
I have a rather heavily modified E36, and I live in a area where it is MANDATORY every 2 YEARS to "smog" my car.
I find it a little annoying that I have to PAY some joker to stick a wand in my cars tailpipe.
Its as if the Smog Shops are now being turned into revenue agents for the state under the color of "emissions regulation".
The fairweather enforcement of the "polluters" is a joke.. just 20 minutes from me.. NO SMOG.
It damn near has me ready to move.
If anyone is around the Rocklin / Sacramento Area.. I gotta E36 that needs to be smogged.
If you can turn me onto a good shop..Shoot me a PM
Is there anyone out there who can suggest a good smog shop?
Id rather spend my money where there be E36's about.. :dunno:
In this day a Honest Mechanic is as hard to find as a honest politician.
Im having a real pain smogging my E36 this year..
Last time it passed fine. :mad:
Running super clean at 25..
Running like a gross polluter at 15.. :confused:
Installed stock exhaust, intake, & MAF.. to "un-modify" before smog test.
Would a Turner euro HFM chip throw it off that badly..?
I called Turner for some technical information and that failed..
I asked for their DME specialist and all he could tell me is "it dumps more fuel in there at idle".
Apparently "it dumps more fuel in there at idle" is as technical as the monkey at Turner could get.
I didnt know "dumps" was a standard unit for measurement. :rolleyes:
Anyone have a STOCK chip for a Silver Label 413 ewsII DME?
Is it really time for a new CAT? :eeps:
Im going to blow a can of sleaze-foam through the intake..
Im stumped fellas.. :bawling:
Well the Turner guy is correct. If your tune is for a 3.5" MAF, and you put a 3" MAF on there, it's gonna run rich. Put the proper intake setup for the tune. That will yield the best results for emissions.
Im aware of that buddy.. thats why Im lookin for a stock chip-chip-chiparoo. :thumbup:
I did run it previously with the 3.5 maf and chip, and there was a decrease.. but my ppm is still sky-high. (ran it with the custom & stock exhaust too)
I did all the normal jaw flapping items.. good fuel, spark plugs, oil change, fresh filter,
B!tch of it is.. the closest smog guy makes me wait with my car at idle before he tests me.
So I know Im losing heat outta the cats.
I wish I could take a hotlap and then try to smog it.. :eeps:
im sleazefoaming it as soon as i have a minute to myself.. I hope it helps.:angel:
ANY input is appreciated..
I went to check my car again at the smog shop.. :angry:
my hc(ppm) is 675 at idle... max is 85 which would make my baby a gross polluter. :wailing:
my hc(ppm) is 140 at rpm .. max is 50 " " "
C02% is 13.5% .. should be above 14.5%
C0% is .69
I seafoamed the intake this morning..
I did all the normal jaw flapping items.. good fuel, fuel filter, spark plugs, oil change (oil has 300mi now), fresh filter..
I even used a ahem.. Alternative Fuel additive..
smog guy says "buy a new cat".. :rolleyes: :dunno:
I guess its time... Is it time?
Any smog guys out there?
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