So the muffler, cat and some of the pipe on my '88 are all pretty rusted, and the gas fumes filling the cab have convinced me its time to build a new exhaust system. Are there any recommendations out there for cats, mufflers and layouts that optimize cost, power/mpg and sound? I don't want to get pulled over, but my poor 4 banger is already pretty gutless so I'm thinking a high-flow cat and thrush?? :icon_chicke ndance:

 

The next size up pipe, high flow cat, and a Thrush muffler seems to be a good combination again.

RwP

 

Yup ^^

 

Any advantages to dual exhaust besides looks?

 

Definitely not.

 

Duals on a 4 banger? Only if you have a split exhaust manifold.

Plus, you can get the scavaging pulses weakened bad enough that it runs even worse, unless you use small dual exhaust piping.

RwP