California Smog Turbo vs 993
06-12-2012, 01:24 PM
#1
Burning Brakes
Thread Starter
California Smog Turbo vs 993
Hi
I have an 83sc and 997 and know little about turbos. I have heard that the 993have a hard time passing smog inspection in CA...is this true of the Turbos or only the non Turbo?
Thanks
Abe
I have an 83sc and 997 and know little about turbos. I have heard that the 993have a hard time passing smog inspection in CA...is this true of the Turbos or only the non Turbo?
Thanks
Abe
06-12-2012, 03:36 PM
#2
Nordschleife Master
abe,
The only hard part about 993s and smog is making sure the readiness codes are set. They can get reset when changing the battery and are hard to get set. If you have an AWD 993 (C4, C4S, or Turbo), be sure the smog station does NOT put the rear wheels on a roller... it will destroy the viscous coupler.
My Ruf 993TT (with Ruf cams and ECU, Ruf sport cats and no mufflers) passes smog with flying colors.
The only hard part about 993s and smog is making sure the readiness codes are set. They can get reset when changing the battery and are hard to get set. If you have an AWD 993 (C4, C4S, or Turbo), be sure the smog station does NOT put the rear wheels on a roller... it will destroy the viscous coupler.
My Ruf 993TT (with Ruf cams and ECU, Ruf sport cats and no mufflers) passes smog with flying colors.
06-12-2012, 07:16 PM
#5
Racer
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No issues here either. Just need readiness codes set. We have an Indy Mechanic here in Camarillo, that can do it for you no problem. Just let me know or PM me and I can give you his details since you are in the area.
Chad
Chad
06-14-2012, 12:24 AM
#7
Instructor
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In my 5 yrs. of ownership I have never had an issue. Setting readiness codes required early morning drives to meet the required parameters--slow sustained driving. My car passed twice with muffler by-pass pipes.
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06-14-2012, 02:53 AM
#8
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I agree with the others. Readiness is a pain, but once set, my car passes with flying colors, measuring well below average. It probably helps that we're exempt from the dyno test.
Have the engine good and warm and you won't have any problems.
Have the engine good and warm and you won't have any problems.
06-15-2012, 11:26 AM
#9
A few years ago, I had the same problem of readiness codes not set on my 993C2. Took the car to a CA smog test referee. As long as all of the other parameters are in limits, you'll pass.
06-15-2012, 11:51 AM
#11
Drifting
Readiness monitors determine if all emission systems are working properly. There's one (or more) for oxygen sensors, one for catalytic converters, one for secondary air injection, EVAP, EGR, etc. depending on what your particular vehicle is equipped with. When you erase a fault code in the DME, all of the readiness monitors reset to "not ready", then as you drive, the vehicle runs tests on every system. As it passes these tests the codes set to a "ready" state. If it fails a readiness test, you get a check engine light with a fault corresponding to whichever system failed. Typically, all but two (depending on the vehicle) readiness monitors need to be set (two can be "not ready", but none can fail) in order to pass an emissions test.
06-15-2012, 04:43 PM
#12
Nordschleife Master
Yes, this used to work. But I believe the rules have changed in the past few years, and the referee stations won't help anymore.
07-05-2012, 11:03 PM
#14
Rennlist Member
I have a low mileage (at the time) 9000 mile car earlier this year that failed and I had to pay the Porsche mechanic extra to "re-set the codes" or something. Did he just spend an hour driving my car or doing something with the computer because I got charged another hour of labor on top of the smog check cost.
Albeit, in the end the seller of my car paid the costs but initially I had to 'front' the money. I'd hate to have to pay for an extra hour of labor every smog check. I was told low mileage cars always struggle to pass - is that something more than just driving steadily for an hour before the smog check?
Albeit, in the end the seller of my car paid the costs but initially I had to 'front' the money. I'd hate to have to pay for an extra hour of labor every smog check. I was told low mileage cars always struggle to pass - is that something more than just driving steadily for an hour before the smog check?
07-06-2012, 11:25 AM
#15
Drifting
I have a low mileage (at the time) 9000 mile car earlier this year that failed and I had to pay the Porsche mechanic extra to "re-set the codes" or something. Did he just spend an hour driving my car or doing something with the computer because I got charged another hour of labor on top of the smog check cost.
Albeit, in the end the seller of my car paid the costs but initially I had to 'front' the money. I'd hate to have to pay for an extra hour of labor every smog check. I was told low mileage cars always struggle to pass - is that something more than just driving steadily for an hour before the smog check?
Albeit, in the end the seller of my car paid the costs but initially I had to 'front' the money. I'd hate to have to pay for an extra hour of labor every smog check. I was told low mileage cars always struggle to pass - is that something more than just driving steadily for an hour before the smog check?