How I passed MD emissions!!!
Thread Starter
Ee / Cpe
Joined: Jan 2003
Posts: 2,843
Likes: 2
From: Gaithersburg, MD / WVU
How I passed MD emissions!!!
Well about 6 months ago I went to emissions and failed horribly, since then ive been contemplating ways to get around this, and I finally did. (since my 6 month leway was up today) Let me start by listing my current mods.
Apexi twin intake
Jdm downpipe
Stock Cat <---- pretty sure its worthless after 10 yrs and loads of unburnt fuel
Apexi N1 muffler
Haltech e6k
When I passed I also had the 100-1 premix in my gas.
So basically I took the car to my friends shop where he has a tailpipe sniffer. I hooked the car up to it and just literally leaned the **** out of it. I went from 3000 HCO ppm to about 800. Well that wasent enuf so I started pondering everything I could do to the car. First I wired my smog pump straight to my battery and a ground to get that old thing spinnin, (haltech dosent control smog pump) Then I started playing with the timing... but that kept making the car die out at idle. So i used my idle screw to up my idle to about 1100 which was enuf to let me take out 2 degrees of timing, or a net of 8 degrees advance at idle.
With all this done I was able to get the car down to about 120ppm which is well withen spec somewhere around 15.5:1 afr. I drove straight to emissions (1/4 mile away) and got the test. Passed first try and already had my old map loaded on the way out of the parking lot!
Well I just thought I would put this info out their for the next person who has to pass emissions and cant figure out a way, (or just use it for an excuse to buy engine management instead of a new cat)
Apexi twin intake
Jdm downpipe
Stock Cat <---- pretty sure its worthless after 10 yrs and loads of unburnt fuel
Apexi N1 muffler
Haltech e6k
When I passed I also had the 100-1 premix in my gas.
So basically I took the car to my friends shop where he has a tailpipe sniffer. I hooked the car up to it and just literally leaned the **** out of it. I went from 3000 HCO ppm to about 800. Well that wasent enuf so I started pondering everything I could do to the car. First I wired my smog pump straight to my battery and a ground to get that old thing spinnin, (haltech dosent control smog pump) Then I started playing with the timing... but that kept making the car die out at idle. So i used my idle screw to up my idle to about 1100 which was enuf to let me take out 2 degrees of timing, or a net of 8 degrees advance at idle.
With all this done I was able to get the car down to about 120ppm which is well withen spec somewhere around 15.5:1 afr. I drove straight to emissions (1/4 mile away) and got the test. Passed first try and already had my old map loaded on the way out of the parking lot!
Well I just thought I would put this info out their for the next person who has to pass emissions and cant figure out a way, (or just use it for an excuse to buy engine management instead of a new cat)
Bigger and better things
Joined: Feb 2001
Posts: 1,270
Likes: 1
From: Marietta, GA
you could have just disconencted your boost gauge and let it bleed of vacuum which somehow makes the engine run differently and you will have lower numbers all round... I dont know why exactly. but it works!
Thread Starter
Ee / Cpe
Joined: Jan 2003
Posts: 2,843
Likes: 2
From: Gaithersburg, MD / WVU
that would just raise the idle speed since their is less vaccuum.... making for a "leener" mixture. this however isnt going to make up for anywhere even close to 2800 ppm... besides I dont think that the one boost gauge line compairs to the 40 feet of leaking line under the uim :P
Junior Member
Joined: Jul 2004
Posts: 35
Likes: 1
From: Baltimore
xstansam,
if you get this please either pm me or e-mail me at Jesse_D_Jaeger@yahoo.com. i live in maryland also and am having difficulty passing the emission test, however, i have read about working the hood...but can barely turn a wrench when i actually starting getting underneath. please contact me i could really use your help and advice as soon as humanly possible. thanks.
if you get this please either pm me or e-mail me at Jesse_D_Jaeger@yahoo.com. i live in maryland also and am having difficulty passing the emission test, however, i have read about working the hood...but can barely turn a wrench when i actually starting getting underneath. please contact me i could really use your help and advice as soon as humanly possible. thanks.
