2003 Mitsubishi Eclipse

Noises problem
2003 Mitsubishi Eclipse 6 cyl Front Wheel Drive Automatic 100600 miles

I recently had a tune-up on my '03 GT Eclipse. It is a v6 and in order to change the plugs and wires the intake manifold was romoved.A new gasket was put on before replacing the manifold. At the same time I removed the resonator from the exhaust to get a deeper sound. Now when I hit 3000 rpm at idle or while driving and getting on it it whistles. Is it the lack of the resonator or a leak in the intake manifold?
April 18, 2008.

I bet its the intake manifold leaking. Try spraying carb cleaner at the base of the intake and see if that will change the idle. If it does then its leaking

Apr 18, 2008.