Just Replaced EGR, Rough Idle, WARM start

izleon

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MazdaSpeed Protege
Last night I replaced the EGR valve on my MSP with the "updated canadian" EGR (FSY1-18-W00). Doing this improved throttle response a little bit, but still does not address the issue that made me replace the valve.

On a cold start, it starts idling at about 1500RPM and drops down to about 800 after it reaches normal operating temperatures.

but when the vehicle is already warmed up and is started the RPMs will sit at around 800 and has surges where it drops to about 400 or so and is accompanied by a terrible rumble, or shake.

Anybody have any experience with this?

My MSP has about 187k KM (116k Miles)
 
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