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1987, 1988, camino, el, fast, headers, high, iroc, nox, passed, passing, smog, xfi

Passed Smog... on the 3rd try

Marc Maro on Jan 22, 2013

Jun 7, 2022 06:32 PM
by newbvetteguy

13

3,021

TPI

73, 88, california, camaro, crc, emissions, formula, guaranteed, nova, nox, pass, required, smog, test, turbo, twin, whats, year

Friggin' Smog

(

1 2)

Cadillac on Feb 7, 2008

Mar 25, 2022 04:07 PM
by MikeBruegger

93

5,878

Northern California

85, 91, aftermarket, california, camaro, cat, catalytic, controversial, converter, converters, database, lower, mechanic, nox, numbers, restamping, shop, trans

Controversial catalytic converter?! HELP!!

TheFool on Feb 28, 2014

Mar 7, 2014 04:04 PM
by TheFool

12

2,665

Exhaust

Best route for a new 350 TPI?

CandyCamaro427 on Jan 18, 2014

Jan 25, 2014 11:34 PM
by mnorton

17

1,613

Engine Swap

15, 15mph, 93, ca, camaro, emission, emissions, fail, failure, gmc, mph, nox, pickup, ppm, smog, test

NOx Emissions Failure in California

boldguy on Jan 25, 2011

May 10, 2013 12:55 PM
by paulo57509

14

2,103

TPI

1990, 2013, 3rd, ca, corvette, gen, nox, pass, smog

Failed smog today

actarnoff on Feb 19, 2013

Feb 26, 2013 09:06 PM
by Imadude_134

14

924

Southern California Area

1990, camaro, caues, clogged, corvette, egr, emissions, high, injected, l98, motor, nox, port, smog, tune

What causes high nox on smog test?

Calixbwsx on Feb 22, 2013

Feb 24, 2013 09:33 AM
by Calixbwsx

6

2,047

TPI

1986, bad, california, carbon, carlo, code, egr, emissions, high, iroc, ls1, lt1, monte, nox, ppm, smog, test, tpi

NEED SMOG HELP- Still high NOx

ToplesIROCmedic on Jan 27, 2012

Sep 16, 2012 06:58 PM
by DENN_SHAH

15

11,010

Tech / General Engine

89, camaro, emission, engine, exhaust, find, genorg, high, hose, leak, leaks, locating, make, nox, revving, sensor, vaccum, vacuum

Emissions / possible vacuum leak

Fuzzman17 on Aug 10, 2012

Aug 24, 2012 11:41 PM
by Fuzzman17

8

1,929

Tech / General Engine

84, 92, barely, barley, camaro, car, emission, emissions, fail, failed, failing, nox, reducing, trans, volvo

Barely failed emissions NOx by .07 Any ideas?

MrPink on Feb 27, 2012

Mar 1, 2012 09:51 PM
by Damon

5

2,926

TPI

Failed Emissions NOx by .07 Seriously!?

MrPink on Feb 27, 2012

Feb 27, 2012 08:32 PM
by 305sbc

2

569

Tech / General Engine

1989, 305, 90, adjust, bad, camaro, camero, clean, egr, engine, fail, gen, high, idle, nox, passages, pump, smog, timing, tpi

HELP! Failed Smog High NOX

camarocasanova on Feb 20, 2012

Feb 21, 2012 09:47 PM
by camarocasanova

5

2,346

TPI

10, car, didnt, egr, engine, hc, high, hydrocarbons, meas, nox, pass, reasons, smog, top, valve

Didn't pass smog, high hc and no

anomolee on Feb 2, 2012

Feb 3, 2012 05:26 PM
by m16a2r

15

1,918

Tech / General Engine

1981, 1989, 89, camaro, emissions, emmisions, failed, failing, hc, high, iroc, nox, pass, smog, test, trans

Emissions Test Failed

fubar_1179 on Jan 14, 2012

Jan 31, 2012 04:02 PM
by fubar_1179

13

5,462

Tech / General Engine

1986, 28, 28l, bad, egr, emissions, fails, failure, hcco, high, idle, nox, rating, thirdgen, v6

V6 Failing Emissions (NO) Need Your Help

pmacd on Sep 24, 2011

Sep 30, 2011 11:53 PM
by pmacd

8

1,138

V6

1989, 90, 95, camaro, egr, emissions, failed, fails, fbody, firebird, functional, gen, hc, nox, test, valve

Failed Emissions NOx HC

SMKNTRS on Apr 10, 2009

Aug 6, 2011 09:20 AM
by RFmaster

16

4,137

TBI

ca, camaro, car, end, failed, high, improve, month, nox, pass, passes, registration, smog, start, temporary, wont

Help! Failed CA smog (NOx)

xChAoSx on May 26, 2011

May 27, 2011 12:27 AM
by five7kid

1

959

Tech / General Engine

CARB vehicle pass numbers

injdinjn on Jan 24, 2011

Feb 1, 2011 06:35 PM
by Duck

18

919

Southern California Area

28, 31, 34, camaro, carbons, chevy, gm, high, hydro, liter, nox, pass, smog, thirdgen, v6, xxcamaroxx09

Cant pass smog

berto85 on Oct 20, 2010

Oct 27, 2010 12:17 PM
by TomP

16

1,308

V6

1989, 1999, 86, circuit, clogged, corvette, due, egr, emissions, failed, high, intake, nox, oil, ports, s10

Failed emmisons due to high NOX, please help troubleshoot

KYLE87 on Apr 29, 2008

Sep 7, 2010 12:20 PM
by jmd

29

5,433

Carburetors

1992, 94, computer, control, engine, frame, high, location, module, nox, pics, picture, pictures, suburan, suburban, transmission

94 suburban 350 in a 3rd gen roller?

big_joe88 on May 25, 2010

May 26, 2010 01:46 PM
by big_joe88

15

2,603

Engine Swap

1989, 454, 86, buy, camaro, cat, cats, cohigh, emissions, emmisions, fail, failed, failure, gutted, hchigh, high, nox

Failed emissions w/gutted cats

BlueByU on Apr 14, 2010

Apr 24, 2010 10:39 PM
by midge54

18

3,028

Tech / General Engine

1992, 350, alcohol, catalytic, chevy, cutlass, egr, emission, emissions, emmissions, failed, guaranteed, high, nox, o2, pass, ratings, rubbing, sensor, v8

Failed Emissions, Nox

3rd gen Will on Mar 8, 2010

Mar 23, 2010 10:27 AM
by 3rd gen Will

27

3,173

Tech / General Engine

350, 86, car, chec, chevy, cid, emission, fail, failed, formula, high, lower, nox, pu, remove, smog, test

[CA] high NOx

MarineIROC on Mar 10, 2010

Mar 22, 2010 11:59 AM
by 3rd gen Will

7

3,345

Tech / General Engine

camaro, chip, chips, emissions, engine, fail, failed, high, hypertech, hypertgech, nox, power, problems, readings, runner, street, tbi, thirdgen

Hypertech chip cause emissions failure?

3rd gen Will on Mar 8, 2010

Mar 9, 2010 10:43 AM
by 3rd gen Will

1

1,527

Tech / General Engine

1988, 33, 34, 86, camaro, code, codes, converter, egrcatalyctic, failed, gm, inspection, intermitent, intermittent, nox, tpi, trouble

Intermittent codes 33 and 34 and failed inspection

Ward on Jan 20, 2010

Jan 21, 2010 08:19 PM
by Ward

5

1,292

Tech / General Engine

1991, 305, 50, 91, camaro, caused, check, fail, failed, liter, nox, smog, smoke, start, tbi, timing, white

1991 305 TBI failed smog today

GCarbone on Nov 19, 2009

Jan 15, 2010 01:38 PM
by GCarbone

4

917

Tech / General Engine

body, camaro, clean, cleaner, cleaning, drilling, egr, emission, emissions, g20, infiniti, lower, manifold, nox, passageways, passed, ports, throttle

Passed Smog - with help.

aammcc on Dec 29, 2009

Jan 9, 2010 01:31 AM
by Fast355

20

3,239

TPI

1991, 50, chevy, cold, engine, miss, missis, motor, nox, pontiac, question, rough, runs, tbi, warm, worse

Miss when warm

Brian21 on Dec 9, 2009

Dec 10, 2009 12:45 AM
by Brian21

6

1,048

TBI

1995, bad, carlo, cel, chevy, emision, emissions, failed, failing, gas, high, monte, nox, test, transmission, truck

Failed emissions, nox is crazy high

Ward on Oct 25, 2009

Nov 4, 2009 06:44 AM
by SMKNTRS

6

1,895

Tech / General Engine

bad, body, egr, fail, failed, gm, idle, nox, set, smog, test, tpi, transmission, troubleshooting, vacuum

help me troubleshoot my failed smog

TraviZ on Oct 16, 2009

Oct 21, 2009 10:12 AM
by 3rd gen Will

20

2,331

TPI

12102614, camaro, crc, emission, emissions, fail, failure, firebird, fix, guaranteed, harness, mpfi, nox, pass, passing, v6

My NOx emissions fail fix 3.1 v6 1991 Camaro

tropez on Sep 1, 2009

Sep 1, 2009 09:32 PM
by jensen73110

2

2,055

V6

1988, 305, 91, camaro, chevy, etest, failed, firebird, high, hydrocarbon, hydrocarbons, nox, ontario, smog, test

1988 305 TPI failed etest... 138 Hydrocarbon

Kevman on Jul 18, 2009

Jul 18, 2009 02:21 PM
by Kevman

4

1,464

TPI

can't pass smog hi nox

antoine on Apr 3, 2009

Apr 3, 2009 04:40 PM
by Rolling Thunder

1

606

Tech / General Engine

crossfire, due, fail, high, injection, nox, smog

Failed the sniffer

emi_16 on Mar 22, 2009

Mar 26, 2009 12:42 AM
by 1TUF92Z

17

587

Northern California

85, 85iroc, delete, emissions, failed, hc, high, horribly, iroc, ls1, nox, pump, reading, rich, running, smog, z

85 IROC failed emissions, horribly

IrocZ_85 on Nov 7, 2008

Nov 9, 2008 09:41 PM
by webeeZ28

7

1,091

Tech / General Engine

09243, 2002, 38, bolt, camaro, knock, ls2, nox, pipe, pitch, sensor, size, thread, threading, trouble

Knock sensor thread pitch

tpiselli on Sep 14, 2008

Sep 14, 2008 08:46 AM
by tpiselli

2

6,297

Tech / General Engine

350, 3923, amounts, autolite, camaro, emisions, emission, high, lt1, mild, nox, plugs, tech, test, vehicles, z28

emisions - NOX high, colder plugs help?

QuickStyle on Jul 19, 2008

Jul 23, 2008 02:02 PM
by Timothayyy

5

5,838

Tech / General Engine

79, additive, autozone, bosch, cadillac, create, didnt, gas, hc, high, level, nox, pass, sensor, smog

Failed smog, high NOX, read all the articles...help!

Trick414 on Jun 14, 2008

Jun 25, 2008 01:17 AM
by fallenleader

11

8,813

Tech / General Engine

ca, california, carlo, check, computer, e85, fail, functional, hc, legal, monte, nox, pre, pretest, problem, smog, testing, turbo

CA Smog Check Pre-Test: FAILED

(

1 2)

Jaime-TA-84 on Mar 24, 2008

May 7, 2008 02:04 AM
by Kevin91Z

52

13,058

Tech / General Engine

57, air, camaro, cat, cats, dyno, emissions, injection, limits, nox, port, removal, thirdgen, tpi, tpiremoving, tuned

Cat Removal on TPI

Neb87GTA on Sep 8, 2004

Apr 8, 2008 06:23 AM
by dirtywhiteZ28

16

14,073

FAQ Board

1985, 1991, camaro, camaroz28, chevy, crc, crcg2p, failed, fails, fuel, g2p, high, injection, leaks, nox, smog, vacumme

Failed Smog – New Engine?

Oscar on Dec 17, 2007

Jan 3, 2008 10:00 PM
by the blur

24

1,861

TPI

adding, alcohol, gas, gpm, lower, nox, rubbing, tank

Yeah emissions time! :( Failed yet again on my first try.

MdFormula350 on Oct 25, 2007

Nov 16, 2007 04:39 AM
by 83 Crossfire TA

18

995

Mid-Atlantic Region

1991, 31, 90, 92, emissions, fail, firebird, hc, high, idle, low, nox, ppm, speed, v6

Tx Emissions Failed, 3.1 V6 1991 could it be the EGR?

emerrem on Oct 18, 2007

Oct 27, 2007 07:51 PM
by Stephen

4

1,313

Exhaust

15, 43, barely, california, car, fail, failed, failing, hc, low, lt1, mph, nox, smog, speed, vortec

help with nox levels! barely failing smog...

jordeezy on Sep 15, 2007

Sep 21, 2007 04:59 PM
by Air_Adam

13

1,236

Carburetors

0902, 88987992, 94, bodied, camaro, computer, conversion, diy, e85, gm, holley, nox, obd2, pn12126121, tpi

Tuning 8746 $61 for Ethanol

smartman__007 on Aug 29, 2007

Sep 18, 2007 08:28 PM
by s24a

33

4,732

DIY PROM

bbc, chevy, clutch, fit, hole, knock, nox, pattern, pivot, sb, sensor, size, style, tapping, thread, threaded

Threaded hole size at engine??

Cobra289 on Sep 8, 2007

Sep 10, 2007 04:13 AM
by Cobra289

9

1,411

Tech / General Engine

1988, ca, california, car, emission, emissions, failed, fees, high, inspection, nox, ref, referee, smog, wrangler

FAILED CA REFEREE INSPECTION emission, please help

1988-305-tbi on Aug 7, 2007

Aug 9, 2007 06:25 PM
by 1988-305-tbi

7

1,132

TBI

camaro, car, catalytic, catylitic, check, converter, echeck, fail, nox, ohio, pass, passing, performance, reduction, transmission, tune

Tuning to pass Ohio E-check

Nitsuj86Iroc on May 30, 2007

Jul 27, 2007 03:51 AM
by DENN_SHAH

13

1,882

DIY PROM

burn, burned, burning, chip, custom, emissions, nox, performance, performancethirdgen, prom, tpis

performance chip burn and emissions

rick89formula on Jul 19, 2007

Jul 19, 2007 11:46 AM
by rick89formula

0

557

Tech / General Engine

Threads Tagged with nox