ok quick question. im going to order a new muffler for my 98 2.7 4runner what is the eaxust diameter? i think its 2.25.

 

Yea its 2 1/4.

 

Same for 3.4?

 

3.4 can go up to 2 1/2 I do believe.

 

2-1/4'' for the 3.4L flares to 2.5'' at the tip so dont count that

 

Hmmm time to start surfing eBay for some better sounding exhaust. Maybe gut the cat.

 

Not this again...

 

no leave the cat alone i love my 18'' magnaflow muffler click my link in my sig for clips and part #'s

 

what am I missing about gutting the cat?

 

just dont do it wont gain anything by doin so

 

It's been a topic of pretty heated discussion here at YT. I realize you may not have known that and suggested it with good intentions (power increase). However, for 95% of the rigs on this forum removing a functioning cat won't do anything but stink and move the power curve of the engine around. A better alternative is to go with a high-flow cat from Car Sound or similar should one feel their stock cat is not functioning properly.

The issue here is mostly that there are misconceptions surrounding removal of a functioning cat. It really doesn't do much but pollute the air we all breathe for minimal -if any- gains in power.

 

awesome going to start a cat fight .... if its not plugged or throwing codes its fine