HKS or Megan Racing systems are considered quieter. I believe several members have had good noise-canceling results with a Borla XS muffler setup with a single outlet. This is a custom fabricated option though. I think you're going to be stuck removing the back body panels whatever you do.

Ray

 

Since you already have the piping, welding in a new can is your cheapest option at about $100 + $welding. I like my Borla.. lifetime warranty too.

Your other options are $ ebay chinese pipes or $$$$ TTE/Remus.

 

You could just sell what you have now and get Che's center exhaust system. No welding or cutting, just install. Also installing with the rear bumper off makes it alot easier.

 

Another vote for the Borla xs. The HKS is my favorite OTS exhaust.

 

I run a Megan racing exhaust with PPE down pipe and AEM CAI.
Just right! Nice rumble and throaty gurgle at low speed deceleration.


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I am very pleased with the HKS over OEM or CHE. I did remove the chrome megaphone from the HKS and added a SS straight pipe. I can hear the exhaust and the radio at speed. The CHE was just too loud but I did like the center outlet. It can be installed from underneath without removing other pieces. The pleasure of having a lift to work with.

 

Works for me, mine has a 2.50" inlet pipe, otherwise stock. Sounds good. Have a turbo, so it's not very loud.

http://www.ppeengineering-onlinestore.com/MR2-Spyder-1ZZ-225-cat-back-dual-exhaust-210012.htm

 

One recommendation is that if you do not have the stock airfilter box, make sure the intake is not the source of much of your noise issue. A lot of aftermarket CAI's can be very loud in a Spyder since the noise source is so close to your ears.

Dave

 

I've been wanting a Megan exhaust but they don't make it anymore ;/