another exhaust question

silver50lx · 09-05-2004, 07:22 PM

i bet everyone hears this all the time but im thinking about getting bbk equal length shorty headers with a bbk x-pipe with cats. i have a dynomax cat back system right now. so the question is will this still pass emissions? thanks for the help.

82 GT · 09-05-2004, 08:48 PM

That depends on other things. Is your smog pump hooked up?
Are your O2 sensors good? What other mods do you have?
The more mods you have, the more emissions your engine is going to produce.
I'm not saying a modded engine won't pass emissions but an engine that is stock or very close to stock will have a much easier time passing smog tests.

88fivepointoh · 09-06-2004, 04:24 PM

What state do you live in?

silver50lx · 09-06-2004, 06:59 PM

well i have an air filter. and the cat back exhaust that does it on mods. i have everything hooked up and my O2 sensors are good. and i live in delaware.

88fivepointoh · 09-06-2004, 07:07 PM

You should be good to go... get the motor really nice and hot before you go for the test.. you should be fine..

silver50lx · 09-06-2004, 09:23 PM

thanks for the help

88fivepointoh · 09-07-2004, 02:06 PM

No problem, reason for getting it hot is so that the cats are at operating temp, and burn off the unused fuel well.

09-05-2004, 07:22 PM	#1
silver50lx Registered Member Join Date: Jul 2004 Posts: 13	another exhaust question i bet everyone hears this all the time but im thinking about getting bbk equal length shorty headers with a bbk x-pipe with cats. i have a dynomax cat back system right now. so the question is will this still pass emissions? thanks for the help.

09-05-2004, 08:48 PM	#2
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	That depends on other things. Is your smog pump hooked up? Are your O2 sensors good? What other mods do you have? The more mods you have, the more emissions your engine is going to produce. I'm not saying a modded engine won't pass emissions but an engine that is stock or very close to stock will have a much easier time passing smog tests. __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

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09-06-2004, 04:24 PM	#3
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	What state do you live in?

09-06-2004, 06:59 PM	#4
silver50lx Registered Member Join Date: Jul 2004 Posts: 13	well i have an air filter. and the cat back exhaust that does it on mods. i have everything hooked up and my O2 sensors are good. and i live in delaware.

09-06-2004, 07:07 PM	#5
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	You should be good to go... get the motor really nice and hot before you go for the test.. you should be fine..

09-06-2004, 09:23 PM	#6
silver50lx Registered Member Join Date: Jul 2004 Posts: 13	thanks for the help

09-07-2004, 02:06 PM	#7
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	No problem, reason for getting it hot is so that the cats are at operating temp, and burn off the unused fuel well.