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Rough idle with weird turbo sound
I have 05 with edge juice. The other day I notice when idling rpms jump from 500 to 1100. It sounds like someone is barely tapping on the accelerator. Its down this as well sitting at a red light but at the red light it has jerked like it was wanting to go.
The other issue is with the turbo. I have 5 in straight pipe on the truck. When the truck is idling or at a red light the turbo sounds like it kicks down with the truck making a deep rumble (the sound is like a truck downshifting deep rumble) through the exhaust.
I have just replaced the egr and ficm less then 3000 miles ago. Can suggestions?