Hello. I have an escort rs turbo and for 15 years i have had a Mongoose 3 inch with 4 inch tailpipe on the car. I now think it is a bit loud.
Is there another system that is a bit more quieter. Would a Mongoose 2,5 inch with 3 inch tailpipe be better?

 

Yes it will be quietened with a small exhaust .

 

I thought shorter exhausts are typically louder.

 

They are talking about bore size, not length. I don't think a 3" or 4" long exhaust is going to have much in it in the noise stakes

 

parp