Whats the best brand and whats the most economic? Money is very tight. Free flowing would be nice if it wont mess up my o2 sensor.

 

Aside from gutting your stock one, most everyone here goes with a Magna-Flow.

 

Will gutting it mess up my o2 sensor? How much more mpg can I expect?

 

Gutting it you might have a problem with the post cat sensor only. You can do the sparkplug non-fouler trick, or Fastman sells 02 simms. As far as mileage goes it will go up a little maybe, if you can keep your foot out of it.

 

http://www.summitracing.com/parts/MPE-23285/ This the one I got,very happy with it.

 

The one halfamil posted is if you have a dual inlet, single outlet converter. Around 1999 or so, they changed the exhaust design to a larger single inlet, single outlet converter. Double check your stock exhaust system, see what you have. Do it visually, don't let a mechanic look it up in a computer, because Dodge never documented this change (evidently), as every mechanic I ever took it to didn't believe me until they got underneath and looked.

If you have the latter:
MPE-94009
MPE-94109

The 94009 has a 16 inch case, the 94109 a 13 inch. Thats the only difference.

 

That may or may not be the one I got.I put 1999 for his model.Don't remember the part # I ordered but, it was a magnaflo direct fit from Summitt and it did fit.

 

Me too, like 200 bucks.