Belgian1979vette
Well-known member
At highway speeds I have the issue that the exhaust is causing too much interior noise to comfortably listen to the radio.
Now the engine has a dual exhaust system with a straight through type bullet style muffler in the middle and 2 straight through magnaflows in the rear. Exhaust sound in itself is good.
The exhaust tips are straight out of the back, so not angled down as was the case with the original style exhaust tips.
Exhaust pipes are 3".
I have heat shields over the pipes in the middle of the car and under the battery trays.
For some unexplicable reason I have in cabin noise coming from the rear compartment which seems to amplify the exhaust noise. I have a hard time explaining why this happens as I would assume that with the rearward pointing exhaust tips this shouldn't be reflecting into the car.
To me it seems that the mufflers which hang under the rear frame rails emit noise that reflects onto the walls of the cavity behind the rear wheel where they get reinforced.
Did someone here ever experience this and solve it ?
I was thinking of glueing some isolation material onto those rear cavity panels, but am a bit afraid that they might get wet and create other issues.
Now the engine has a dual exhaust system with a straight through type bullet style muffler in the middle and 2 straight through magnaflows in the rear. Exhaust sound in itself is good.
The exhaust tips are straight out of the back, so not angled down as was the case with the original style exhaust tips.
Exhaust pipes are 3".
I have heat shields over the pipes in the middle of the car and under the battery trays.
For some unexplicable reason I have in cabin noise coming from the rear compartment which seems to amplify the exhaust noise. I have a hard time explaining why this happens as I would assume that with the rearward pointing exhaust tips this shouldn't be reflecting into the car.
To me it seems that the mufflers which hang under the rear frame rails emit noise that reflects onto the walls of the cavity behind the rear wheel where they get reinforced.
Did someone here ever experience this and solve it ?
I was thinking of glueing some isolation material onto those rear cavity panels, but am a bit afraid that they might get wet and create other issues.