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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 01-22-2013

06-07-2022 06:32 PM
by newbvetteguy

13

2,597

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 02-07-2008

03-25-2022 04:07 PM
by MikeBruegger

93

5,234

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 02-28-2014

03-07-2014 04:04 PM
by TheFool

12

2,348

Exhaust

Best route for a new 350 TPI?

CandyCamaro427 on 01-18-2014

01-25-2014 11:34 PM
by mnorton

17

1,536

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 01-25-2011

05-10-2013 12:55 PM
by paulo57509

14

1,976

TPI

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

Failed smog today

actarnoff on 02-19-2013

02-26-2013 09:06 PM
by Imadude_134

14

835

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 02-22-2013

02-24-2013 09:33 AM
by Calixbwsx

6

1,917

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 01-27-2012

09-16-2012 06:58 PM
by DENN_SHAH

15

9,119

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 08-10-2012

08-24-2012 11:41 PM
by Fuzzman17

8

1,828

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 02-27-2012

03-01-2012 09:51 PM
by Damon

5

2,632

TPI

Failed Emissions NOx by .07 Seriously!?

MrPink on 02-27-2012

02-27-2012 08:32 PM
by 305sbc

2

509

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 02-20-2012

02-21-2012 09:47 PM
by camarocasanova

5

2,101

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 02-02-2012

02-03-2012 05:26 PM
by m16a2r

15

1,817

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 01-14-2012

01-31-2012 04:02 PM
by fubar_1179

13

4,536

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 09-24-2011

09-30-2011 11:53 PM
by pmacd

8

1,016

V6

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

Failed Emissions NOx HC

SMKNTRS on 04-10-2009

08-06-2011 09:20 AM
by RFmaster

16

3,665

TBI

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

Help! Failed CA smog (NOx)

xChAoSx on 05-26-2011

05-27-2011 12:27 AM
by five7kid

1

884

Tech / General Engine

CARB vehicle pass numbers

injdinjn on 01-24-2011

02-01-2011 06:35 PM
by Duck

18

825

Southern California Area

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

Cant pass smog

berto85 on 10-20-2010

10-27-2010 12:17 PM
by TomP

16

1,207

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 04-29-2008

09-07-2010 12:20 PM
by jmd

29

5,166

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 05-25-2010

05-26-2010 01:46 PM
by big_joe88

15

2,429

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 04-14-2010

04-24-2010 10:39 PM
by midge54

18

2,895

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 03-08-2010

03-23-2010 10:27 AM
by 3rd gen Will

27

2,929

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 03-10-2010

03-22-2010 11:59 AM
by 3rd gen Will

7

2,849

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 03-08-2010

03-09-2010 10:43 AM
by 3rd gen Will

1

1,204

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 01-20-2010

01-21-2010 08:19 PM
by Ward

5

991

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 11-19-2009

01-15-2010 01:38 PM
by GCarbone

4

839

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 12-29-2009

01-09-2010 01:31 AM
by Fast355

20

3,141

TPI

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

Miss when warm

Brian21 on 12-09-2009

12-10-2009 12:45 AM
by Brian21

6

991

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 10-25-2009

11-04-2009 06:44 AM
by SMKNTRS

6

1,809

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 10-16-2009

10-21-2009 10:12 AM
by 3rd gen Will

20

1,899

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 09-01-2009

09-01-2009 09:32 PM
by jensen73110

2

1,640

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 07-18-2009

07-18-2009 02:21 PM
by Kevman

4

1,399

TPI

can't pass smog hi nox

antoine on 04-03-2009

04-03-2009 04:40 PM
by Rolling Thunder

1

558

Tech / General Engine

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

Failed the sniffer

emi_16 on 03-22-2009

03-26-2009 12:42 AM
by 1TUF92Z

17

529

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 11-07-2008

11-09-2008 09:41 PM
by webeeZ28

7

825

Tech / General Engine

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

Knock sensor thread pitch

tpiselli on 09-14-2008

09-14-2008 08:46 AM
by tpiselli

2

4,752

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 07-19-2008

07-23-2008 02:02 PM
by Timothayyy

5

5,311

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 06-14-2008

06-25-2008 01:17 AM
by fallenleader

11

7,662

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 03-24-2008

05-07-2008 02:04 AM
by Kevin91Z

52

12,582

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 09-08-2004

04-08-2008 06:23 AM
by dirtywhiteZ28

16

12,334

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 12-17-2007

01-03-2008 10:00 PM
by the blur

24

1,643

TPI

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

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

MdFormula350 on 10-25-2007

11-16-2007 04:39 AM
by 83 Crossfire TA

18

927

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 10-18-2007

10-27-2007 07:51 PM
by Stephen

4

1,110

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 09-15-2007

09-21-2007 04:59 PM
by Air_Adam

13

1,144

Carburetors

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

Tuning 8746 $61 for Ethanol

smartman__007 on 08-29-2007

09-18-2007 08:28 PM
by s24a

33

4,316

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 09-08-2007

09-10-2007 04:13 AM
by Cobra289

9

991

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 08-07-2007

08-09-2007 06:25 PM
by 1988-305-tbi

7

1,071

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 05-30-2007

07-27-2007 03:51 AM
by DENN_SHAH

13

1,765

DIY PROM

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

performance chip burn and emissions

rick89formula on 07-19-2007

07-19-2007 11:46 AM
by rick89formula

0

512

Tech / General Engine

Threads Tagged with nox