smog - Rennlist - Porsche Discussion Forums

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14, 911, ca, california, carb, cat, catalytic, cats, exhaust, extra, fabspeed, hp, pass, porsche, smog, sport

Fabspeed cats to receive CARB approval!

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mgianzero on Mar 13, 2013

Mar 22, 2026 11:28 PM
by AOW162435

53

9,522

993 Forum

emissions, green wire, ignition coil, smog

928 High HC and rough idle

kaimosabe on Mar 5, 2026

Mar 15, 2026 06:46 PM
by kaimosabe

2

371

928 Forum

993: Which OBD2 scanner for California emissions test.

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1 2)

littlerunner on Aug 9, 2019

Oct 22, 2025 04:05 PM
by zenit

19

7,885

993 Forum

Passing smog in CA (GT4)

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1 2 3)

Dirtygrid on Apr 15, 2023

Aug 30, 2025 01:46 PM
by theblksurfwagon

30

5,243

West US Rennlist Region

P0491 Secondary Air Injection - At a loss

sixfiveoh on Jul 14, 2025

Jul 14, 2025 07:29 PM
by Porschetech3

3

470

996 Forum

97, 993, bmw, boxster, car, challenge, codes, porsche, procedure, process, readiness, readyness, setting, smog, sti, subaru

Process for 993 Readiness Codes

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1 2 3 4)

Harvey Yancey on Jan 8, 2008

Jan 20, 2025 09:10 PM
by jay@EZimmoblock.com

48

17,249

993 Forum

608z, 6203, 928, 928s4, ac, b188, bearing, compressor, dac30523rr90, nachi, pipe, puller, pump, smog, test, transseal

Bearing madness

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Podguy on Dec 1, 2007

Jun 16, 2024 04:34 AM
by UKKid35

113

24,112

928 Forum

944, climate, crv, hot, no, running, smog, test, thermostat

No thermostat-what do you think??

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1 2)

The Hammer on Nov 29, 2005

May 17, 2023 11:02 AM
by curtisr

28

5,135

924/931/944/951/968 Forum

1998, 74, air, block, car, chevy, cobalt, diagram, hack, injection, location, plug, remove, secondary, small, smog, tube, vortec

Removal of secondary air injection/smog

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1 2 3 4)

Ag02M5 on Jul 4, 2007

May 12, 2023 06:40 PM
by Nyx

54

13,349

964 Turbo Forum

1978, 911, 911smogpumpremoval, pump, removal, sc, smog

Smog pump removal part Deux

theiceman on Oct 23, 2006

Nov 29, 2022 11:24 AM
by theiceman

6

2,088

911 Forum

1982, 924, 928, air, belt, delete, deleted, gain, pictures, porsche, pump, remoing, removal, smog, tight, tractor

Air pump delete green belt, how tight should it be?

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1 2)

jwillman on Jun 5, 2011

Aug 31, 2022 04:55 PM
by GregBBRD

17

9,148

928 Forum

20, 911, 928, 944, 996, air, belt, delete, eliminate, inch, porsche, pump, remove, rennlist, smog

Air Pump Delete

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1 2 3)

AJK on Apr 26, 2006

Jul 21, 2022 12:16 PM
by Shelden Finholm

33

24,626

928 Forum

996, 997s, bad, cats, codes, gas, mileage, p0420, p0420p0430, p0430, p0430p0420, pass, poor, porsche, smog, yourca

Alternatives?? P0430 / P0420

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1 2)

morganabowen on May 24, 2013

Sep 14, 2021 07:19 AM
by zbomb

28

17,011

996 Forum

15mph, 25, 91, 944, california, crx, dec, es300, high, max, nox, po82609b, reading, smog, turbo, years

CA Smog Success!

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Tom M'Guinn on Jul 5, 2012

Aug 17, 2021 05:23 PM
by cdemonj

107

21,580

944 Turbo and Turbo-S Forum

1980, 1984, 2007, 928, 928s, airsmog, car, cars, grand, gts, picture, prix, pump, pumps, purpose, smog, whats

purpose of Air Smog Pump

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toofer on Apr 1, 2008

Aug 16, 2021 12:40 PM
by Alan

19

7,417

928 Forum

california, car, certificate, dispensation, dmv, kms, pass, reads, smog, special, speedometer, test, tune

california smog test and a built and tuned car

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rickjaffe on Mar 4, 2014

Jul 17, 2021 03:21 AM
by Flat6Music

30

12,825

996 Turbo Forum

993, air, boxster, clean, cleaning, cutoff, passages, porsche, ports, process, sai, secondary, small, smog, techron, valve

Cleaning SAI Ports...DIY Write Up

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1 2 3 4)

Rob Kwate on Oct 11, 2004

May 20, 2021 06:47 PM
by Rob Kwate

46

19,482

993 Forum

981, 997, boxster, cel, check, dyne, engine, gt2, gt3, light, p0503, porsche, smog, test, trigger

Can smog inspection cause check engine light to come on

Cheesewiz on May 19, 2012

Apr 18, 2021 02:00 AM
by Daniel Ochoa

9

15,600

997 GT2/GT3 Forum

Prepping for smog, no smiles per miles -- More like frowns

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1 2)

yoda888 on Apr 11, 2021

Apr 15, 2021 07:49 PM
by JW911

21

1,741

991

85 944 NA not passing Smog (high NO)

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1 2)

944Erdo on Dec 17, 2020

Mar 21, 2021 09:24 AM
by T&T Racing

24

5,331

944 & 944S Forum

durametric, emissions, monitor, readiness, smog

Emissions test - CAT monitor not ready

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Zygrene on Aug 19, 2020

Nov 20, 2020 07:19 PM
by 996_C4S

45

11,033

997 Forum

CA Smog Check: Loose Hose on a 928

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wigwampro on Apr 6, 2020

Aug 31, 2020 07:40 AM
by danglerb

58

4,965

928 Forum

2012, 911, 928, bad, boxster, car, chevy, conversion, engine, hybrid, hybrids, kit, pass, porsche, renegade, smog, swap, v8

Purists who hate the chevy conversion.... this car is legit.

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ledee416 on Nov 5, 2012

May 13, 2019 02:18 AM
by ReefShark

383

48,019

928 Forum

2007, 50, bmw, clear, computer, cycle, drive, ford, fusion, gm, miles, monitors, procedure, restart, smog

ALMOST passed smog - SOLVED w/drive cycle procedure

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Th Dude on Jul 17, 2012

Apr 30, 2019 11:12 AM
by "02996ttx50

52

66,171

996 Turbo Forum

1989, 928, air, cat, delete, function, hose, injection, issue, porsche, pump, removing, smog

Air Pump Components/Operation

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1 2)

Alan on Dec 27, 2012

Sep 3, 2018 05:43 PM
by Shark2626

26

8,757

928 Forum

alameda, auto, car, center, check, college, didnt, fail, functional, funtional, pass, ref, referee, skyline, smog, test

Test only center failed on "functional test" HELP!!!

BanMeNot on Nov 3, 2007

May 27, 2018 02:35 AM
by Cassie Vinzant

12

9,625

993 Forum

air, boost, c3892, end, large, low, megasquirt, move, pulley, pump, rotrex, smog, supercharger, torque, vortech

Rotrex Supercharger thread

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SeanR on Sep 21, 2012

Dec 28, 2017 03:58 PM
by davek9

518

91,721

928 Forum

30, 34, 34l, 36l, boxster, ca, california, diameter, engine, find, legal, maf, motor, smog, swap, swaps

3.4L Engine Swap - Smog Legal in CA?

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1 2)

Lightning MO on Apr 12, 2010

Aug 5, 2017 01:16 AM
by Byprodriver

19

7,584

Boxster & Boxster S (986) Forum

93306, 944, 944hybrids, ca, forum, grand, hybrid, hybrids, maintenance, motor, national, passing, porsche, smog, test, v8

Porsche 944 Hybrids!!

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Devia on Jun 9, 2004

Jul 18, 2017 08:06 PM
by odurandina

82

17,851

924/931/944/951/968 Forum

California smog and 3.8 liter 993 engine

Cupcar on Dec 2, 2011

Jan 15, 2017 07:47 PM
by JM993

14

2,888

993 Forum

FS 1976 911 Smog Pump - PRICE REDUCTION

redfrog on Oct 23, 2016

Oct 23, 2016 10:30 AM
by redfrog

0

776

Parts Marketplace - Old

smog air pump

redfrog on Oct 15, 2016

Oct 15, 2016 11:20 AM
by redfrog

0

937

Parts Marketplace - Old

15, 25, acetone, california, cat, faild, failed, gas, methenal, mph, nox, oxygen, pass, sensor, smog

Passed smog after 7 tries! [was: Help - Failed smog 5 times (New cat + O2 sensor)]

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1 2)

Foz on Nov 12, 2011

Oct 6, 2016 06:48 PM
by smogstaronly

15

15,659

924/931/944/951/968 Forum

944 s2, california, cel, check engine light, smog

'91 944 S2 Check engine light? CA Smog issue.

RavenTooth on Sep 22, 2016

Sep 26, 2016 11:43 AM
by V2Rocket

2

2,694

944 & 944S Forum

New 928 Owner, High NOx, MAF investigation, Blinkr

coach928 on Jun 23, 2016

Jul 23, 2016 09:01 PM
by dr bob

13

3,306

928 Forum

207, 911, 996, bearing, c4s, change, check, differenetial, differential, front, porsche, pricing, smog, test, turbo

C4S front differential bearing

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sullivs on Aug 22, 2011

Apr 6, 2016 08:15 PM
by Dharn55

42

24,077

996 Forum

951, breather, correct, failed, fails, fuel, gross, guaranteed, interpreting, limits, operation, pass, polluter, porsche, results, smog, valve, wwwfailedsmoggrosspolluterorg

Failed Smog, GROSS POLLUTER Results!!

Cyrus951 on Oct 21, 2004

Nov 28, 2015 01:56 PM
by lart951

9

4,407

944 Turbo and Turbo-S Forum

San Diego: SMOG Check Trouble

Tommhnyc on Oct 26, 2015

Nov 11, 2015 12:04 PM
by rcsting

1

1,111

West US Rennlist Region

928, 92834744505, 92861286700, birel, blue, brake, caliper, delete, free, industries, kart, oval, porsche, pulley, rebuild, shipping, smog

Before & After Picture Thread

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shmark on Jun 20, 2009

Oct 30, 2015 04:07 PM
by mark kibort

83

25,749

928 Forum

993, affect, cel, clear, code, codes, cooper, mini, obd, porsche, radiness, readiness, related, repair, set, smog

Readiness codes fix....

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mac993 on May 6, 2010

Aug 20, 2015 11:21 AM
by ghgh

160

28,170

993 Forum

Threads Tagged with smog