if your cat has been there awhile it doesnt matter how it looks on the outside its how gummed up it is on the inside, how many times have you had a fouled spark plug?? but just run a good 2 1/4 inch pipe from the cat back to a see through type muffler, like a glass pack
Well I've only had my 4runner for 2 weeks or so now. I just replaced the spark plugs and wiring and did a tune up on the engine and thats when I noticed my header was cracked and 2 little holes in my muffler. A see through muffler? Didn't even know they made them
![Head Scratch :headscratch:](https://board.marlincrawler.com/Smileys/marlin/headscratch.gif)
Captain - the cheaper the better, but willing to spend up to $400 tops!