for a couple days i have noticed specially on a cold start that the sound is more muffled and idles faster. no other problems are noted. anyone have any ideas? thanks John

 

your engine is cold....

 

is this your first car?

 

That is normal, it is a fast idle to warn the motor

 

Its a normal cold start haha

 

no no, i bought it new in 2003 its an 2003.5 maybe what i meant to say is that the exhaust sounds diff upon a cold start. i know it idles high normally. anyway, it just sounds off and rough sounding. hard to describe. gonna get an oil change and have them plug it in and see whats going on. thanks

 

Does the idle go down to normal after 5 mins?

 

mine does the same thing.

 

My exhaust sounds deeper on a cold start but quiets down after the warm up phase!

 

I am not sure if you hearing something unusual but if you car is idle is raised due to the cold start then the exhaust note will be different

 

The exhaust tone on my last two Gs sounded deeper on cold start-up.
This is normal due to the higher rpm and the car will also be running a bit richer on cold start-up.

 

It has to do with the variable intake/exhaust and engine timing via the ECU...it has a different program when the engine is cold. You will hear a louder intake sound too.

 

its deffinately sounding diffrent than it ever has. could reseting computer do anything?

 

I just put on a lightweight flywheel and a stage 4 clutch...She starts like an F1 car now!

 

well i found the culprit. I had an oil change today and as the guy was lifting the car, i noticed a huge tree branch wedged between the exhaust and the frame. I have no idea how it got there but it must have been about 2 inches in dia. and 3 to 4 feet long. im assuming the vibration upon start up was doing it. otherwise the oil change did it. John