smog removal
smog removal
ok i have a 89 trans am 5.7 tpi i want to remove the smog system..its ugly we dont have DMV inspection in michigan i want to know the proper steps on removal and do i have to change or adjust any numbers in the ECM when removing the system so it doesnt run rich/lean?
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: smog removal
If it's serpentine belt system, https://www.thirdgen.org/serpentine
If V-belt, same thing - just remove the belt for the smog and ignore the new belt rerouting
If V-belt, same thing - just remove the belt for the smog and ignore the new belt rerouting
Re: smog removal
If it's serpentine belt system, https://www.thirdgen.org/serpentine
If V-belt, same thing - just remove the belt for the smog and ignore the new belt rerouting
If V-belt, same thing - just remove the belt for the smog and ignore the new belt rerouting
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: smog removal
There's a small tube comes off each manifold, there is a check valve at the top where they all meet on each side - remove the check valve and use a standard NPT cap from Lowes/Home Depot to cat it off.
There's a small tube from the cat up to the pass side - I cut mine off at the cat, crimped the end shut, and welded it sealed with the old propane torch and coat hanger style welding (torch melts coat hanger wire like solder).
The AIR pump has 2 bolts in the back that hold the plastic square valve (this piece looks like Princess Leah's head) to it.
That's about it.
There's a small tube from the cat up to the pass side - I cut mine off at the cat, crimped the end shut, and welded it sealed with the old propane torch and coat hanger style welding (torch melts coat hanger wire like solder).
The AIR pump has 2 bolts in the back that hold the plastic square valve (this piece looks like Princess Leah's head) to it.
That's about it.
Re: smog removal
There's a small tube comes off each manifold, there is a check valve at the top where they all meet on each side - remove the check valve and use a standard NPT cap from Lowes/Home Depot to cat it off.
There's a small tube from the cat up to the pass side - I cut mine off at the cat, crimped the end shut, and welded it sealed with the old propane torch and coat hanger style welding (torch melts coat hanger wire like solder).
The AIR pump has 2 bolts in the back that hold the plastic square valve (this piece looks like Princess Leah's head) to it.
That's about it.
There's a small tube from the cat up to the pass side - I cut mine off at the cat, crimped the end shut, and welded it sealed with the old propane torch and coat hanger style welding (torch melts coat hanger wire like solder).
The AIR pump has 2 bolts in the back that hold the plastic square valve (this piece looks like Princess Leah's head) to it.
That's about it.
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