MonsterZ28

I did a search but it didnt help much, can i pass emmissions with a 98 z28 without them or do i have to have em?

davered00ss

iTrader: (4)

Exhaust Gas recerculation. Takes exhaust gases and feeds them through the intake to be reburnt. This was done away with by switching cams to meet emissions standards on the 01/02 modles. Depends on how your state does emissions weather you can delete it or not. Check your local forum and ask there.

Full-Force

iTrader: (11)

You could pass without it IMO. There is also some stuff that is on the market that you can pour in your tank that gaurantees that you will pass an emissions test.

tripps

iTrader: (7)

Or with a laptop tune, you can completely delete the EGR so it wont fault a code when they check for it.

Ace$nyper

iTrader: (8)

In some areas that might be all you need. Others you'll need EGR for smog.

SLP makes a EGR ls6 intake mani if you gotta keep it and want to upgrade that.

technical

Can you pass a sniffer test, maybe...since you're mostly stock. The EGR is actually designed to recirculate exhaust gases in the combustion chamber to reduce temperatures since exhaust gases will *not* re-burn. This reduces the various oxides of nitrogen emissions. The valve itself opens under cruising conditions. If they put a sniffer in the tailpipe and ambient temps are high, you could run the risk of failing on the rollers since your PCM expects the valve to be there. If you had the LS6 intake which is why later models didn't have the EGR, and the PCM was calibrated correctly, you *could* pass just fine.