No EGR

[Matto]

You can take out your egr, you just need to make a plate similar to the bottom of your egr and use that to cover the hole. Then you need to plug off the manifold at the back with some pipe plugs. The egr is just used for emmissons reasons and may run better without it.

 

[turbowrenchhead]

Thats exaclty what I did with mine. I need no stinking exhaust gases in my chambers.

 

[bruce]

Originally posted by Matto
You can take out your egr, you just need to make a plate similar to the bottom of your egr and use that to cover the hole. Then you need to plug off the manifold at the back with some pipe plugs. The egr is just used for emmissons reasons and may run better without it.

Ya, you can do that.
But, you wind up with the ecm still thinking that the EGR is in use. For EGR to work means adding a signifigant amount of timing, so without it, you wind up with an excessive amount of timing when the ecm thinks it's on.

You can typically take 6-8d of timing out of the cruise area of the timing table, when you delete the EGR. If you don't your just wasting fuel, and running higher then needed oil temps.. Plus you should turn off the EGR in the chip anyway, if it's not in use.

 

[burnout]

No EGR hear and bruce is right about the timing.

Burnout

 

[HOTSIX]

Okay, what about when I gotta go back in a year for another emissions test ?

It will effect the results a bit right ?

Dont wanna fail then haveta re-install the EGR. Why fix it if it ain't broke ?

Does the EGR affect performance that much anyway ? Not trying to be a pessimist here guys I just figure that there's enough HP that we shouldn't have to worry about the EGR.

What you guys think ? Here's an interesting bit of info on EGR's and detonation.

The Exhaust Gas Recirculation (EGR) system is one of the engine's primary emission controls. Its purpose is to reduce oxides of nitrogen (NOX) pollution in the exhaust. It does this by "leaking" (recirculating) small amounts of exhaust into the intake manifold through the EGR valve. Though the gases are hot, they actually have a cooling effect on combustion temperatures by diluting the air/fuel mixture slightly. Lowering the combustion temperature reduces the formation of NOX as well as the octane requirements of the engine. If the EGR valve is not opening, either because the valve itself is defective or because its vacuum supply is blocked (loose, plugged or misrouted vacuum hose connections, or a defective vacuum control valve or solenoid), the cooling effect is lost. The result will be higher combustion temperatures under load and an increased chance of detonation.