i am looking at getting probably a 3.5 mufflex. I have noticed that they are reduced to 3 inches to accomodate a cat. How much would this hurt me by having this piped reduced to 3 inches for a cat. I am thinking of not running a cat (yeah I know its illegal) and just welding a 3.5 tube there instead of the 3 inch. Any suggestions?

 

Look on summit or jegs, pretty sure you can get a 3.5 high flow cat.

 

I can't find one bigger than 3 inch

 

The 3 inch cat would restrict my flow and it will reduce the pipe size to 3 instead of 3.5

 

MPe-59920, MPE-60020, MPE-60010 from summit racing

i really dont think that having 12 inches of 3" pipe instead of 3.5 pipe is going to make a significant difference though

 

Wow, I have been looking for sometime for one of those. Thanks, anyone have any idea of how the first one flows? I think it should be fine, but someone may have more experience than me with converters

 

Whats the difference between a race muffler and a regular muffler. If I run the ultra flo number 17517 with a 3.5 cat, will it be to loud for the streets? Before I blow a lot of money, I want to know if I will like the sound first

 

Listen to Orr's Sound clip....although he has 4" exhaust I dont think it would sound too different. Either that or youtube it.

 

I have the 3 1/2" Mufflex system on my car and I run the Magnaflow 3.5" muffler. Not loud at all until you put the pedal to the metal. I run dual cats so I have 3.5" all the way to the "Y". Yes I cut off the 3" pipe on the Mufflex.

 

Random Technology makes a 4" dia inlet/outlet cat converter. No need to be illegal or choke your piping down.

http://www.randomtechnology.com/products.html

TA

 

I have decided to go with the 3.5 mufflex with the 3.5 converter. That should flow enough for my need and still be legal, and be quiet enough for the streets.

 

Everyone that is reading this that has a ultra flo, how would you rate the sound quality and how loud?