CL600 Bi-Turbo Exhaust/Muffler question..
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CL600 Bi Turbo 2003 Renntech, BMW E39 530D SE
CL600 Bi-Turbo Exhaust/Muffler question..
Hello
I have recently have had a Cat-Back straight through free flow exhaust/muffler fitted to my CL600. All it has now are the Cats and 1 back box each side (with the quad tail pipes..pics to follow
The company also fitted a larger free flow X pipe rather than that crushed style one.
I also have the Renntech Handheld Tuner on it. I have noticed when on tune and the engine is warm, if you rev the car the revs take a little longer to die down rather than just drop back to idle speed. Before the exhaust was fitted revs would just drop like normal.
Is this cause for concern or is it because the turbos can now spool more freely, taking more time for revs to die down?
This doesn't happen when driving only what stationary.
There are no warning lights, performance is blistering as always and torque now is just immense, love these cars!
Thanks
I have recently have had a Cat-Back straight through free flow exhaust/muffler fitted to my CL600. All it has now are the Cats and 1 back box each side (with the quad tail pipes..pics to follow
The company also fitted a larger free flow X pipe rather than that crushed style one.I also have the Renntech Handheld Tuner on it. I have noticed when on tune and the engine is warm, if you rev the car the revs take a little longer to die down rather than just drop back to idle speed. Before the exhaust was fitted revs would just drop like normal.
Is this cause for concern or is it because the turbos can now spool more freely, taking more time for revs to die down?
This doesn't happen when driving only what stationary.
There are no warning lights, performance is blistering as always and torque now is just immense, love these cars!
Thanks
