Best emission headers
10-09-2007, 11:05 AM
#1
Registered User
Thread Starter
Join Date: Apr 2006
Location: Wilmington, De
Posts: 254
Best emission headers
I want to get some headers for my 94Z. Delaware checks emissions every other year and I'm due this february. Wife is going to get them for my Xmas present. Who makes the best fit, lasting finish, won't brake the bank, adds great power(duh) and of course is emissions legal. Also anybody know of any good local shops to get them put on.
10-09-2007, 12:31 PM
#6
Registered User
Join Date: Jan 2007
Location: Lansing, MI via Bowling Green, KY: Dalton, GA: Nashville, TN & Atlanta, GA
Posts: 1,026
I believe some of the supporting vendors may carry Kooks, but I'm not certain. I'm planning to buy some of their race headers in the next month or two. Maybe we could get a group purchase going and save ourselves 10-15 bucks.
10-09-2007, 01:07 PM
#7
Administrator
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,646
Define what Delaware looks at as part of emissions. That will determine what is "emissions legal". In general, long tubes are not legal because they relocate the cat(s), in violation of Federal law. Some states enforce the Federal requirements, others don't. Even if they do not enforce the Federal regulations, they may look at the headers for a welded on tag with the authorization number, indicating the headers are emissions legal in either 49- or 50-states. Will they do a visual check to see if your AIR and EGR systems are still present?
If they do not do a visual inspection to enforce the above mentioned regulations, you will not generally have a problem passing a dyno emissions test with headers. They do not really affect emissions, as long as you keep the cat(s) and the EGR system working.
If they do not do a visual inspection to enforce the above mentioned regulations, you will not generally have a problem passing a dyno emissions test with headers. They do not really affect emissions, as long as you keep the cat(s) and the EGR system working.
10-09-2007, 01:10 PM
#8
Registered User
Thread Starter
Join Date: Apr 2006
Location: Wilmington, De
Posts: 254
They never look, just stick a sensor up the tailpipe and make me take the engine up to certain rpms since it does not have OBD1. If it had ODB1 they would just plug into the computer. That's what they do to my truck.
10-09-2007, 04:48 PM
#11
Registered User
Join Date: Dec 1969
Location: PORTLAND, OR, MULTNOMAH
Posts: 3,499
Number one thing is to know what what is allowed in your area. If federal regs pertain to you, e.g. not moving the cat (s) from their original location or reducing dual-cats to single cat, etc. then you risk getting caught ---although probably a slim chance---and having to comply and maybe pay a fine or something.
Yes, on the hi-flow cats. Just look at the whole exhaust system from the manifolds/headers to the tail pipes and everything in between. You want little or no back pressure----which normally calls for 1 3/4 headers (preferably long tubes) hi-flow cats and free-flowing exhaust.
---and throw in some 1.6 rockers on the exhaust side.
If you are afraid of the emissions cops, then you'd best go with 50-state certified headers. JMHO
Yes, on the hi-flow cats. Just look at the whole exhaust system from the manifolds/headers to the tail pipes and everything in between. You want little or no back pressure----which normally calls for 1 3/4 headers (preferably long tubes) hi-flow cats and free-flowing exhaust.
---and throw in some 1.6 rockers on the exhaust side.
If you are afraid of the emissions cops, then you'd best go with 50-state certified headers. JMHO
10-09-2007, 05:16 PM
#13
Administrator
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,646
There's a listing of 50-state approved headers (unfortunately buried in with all other aftermarket auto parts) on the California Air Resources Board (CARB) website. Many states accept the CARB-EO emissions ceritification.
