Do I really need the EGR ports? How would I do without em?

[Calvo]

I'm looking to replace my headers, and well, everything back. I've noticed though when poking around that there are EGR ports on the stock manifolds, but hardly any aftermarket headers with EGR ports. How would I go about installing headers and getting rid of the EGR?

 

[Schurkey]

WHAT ENGINE? WHAT MODEL YEAR? WHAT VEHICLE?

EGR ports?

Do you mean AIR ports?

There is ONE EGR port (on the left exhaust manifold) of Vortec engines, and none on a TBI. There might be one AIR connection on each manifold of an AIR-equipped vehicle.

 

[454cid]

Do you mean AIR ports?

No, that's were planes take off and land

 

[Calvo]

WHAT ENGINE? WHAT MODEL YEAR? WHAT VEHICLE?

EGR ports?

Do you mean AIR ports?

There is ONE EGR port (on the left exhaust manifold) of Vortec engines, and none on a TBI. There might be one AIR connection on each manifold of an AIR-equipped vehicle.

I drive a 98 Tahoe, the L31 Vortec 350, when trying to figure out what the tubing running through BOTH of the manifolds the only answer I could find was that they were EGR. I might be completely wrong. If I am wrong, what the heck are they? Can I run headers without them without a check engine light?

 

[98chevy2500SS]

Some great information in this thread: https://www.gmt400.com/threads/egr-delete-will-i-benefit.39607/

Ultimately, it sounds like you would have to get the EGR deleted by getting your computer tuned to compensate for it being deleted.

 

[454cid]

Is this a California emmisions vehicle?

 

[Schurkey]

If you've got plumbing on both manifolds, you have AIR and EGR on the left manifold, and AIR on the right.

There are headers available that allow use with the AIR pump and plumbing. My '88 has shorty headers with AIR provisions, but of course no EGR from the exhaust manifold since TBI uses exhaust crossover passages in the two cylinder heads, and the intake manifold.