What should I get?

 

Both will give you plenty of flow but most guys like the deeper sound of the 5".


Luke

 

I heard that the 5 inch will decrease the mpg. Is that true?

 

4" is probably all you need for a 94 to open that exhaust up enough. Do you have any mods on your truck?

 

This is for my 01 24 Valve..

 

5" won't hurt performance, the turbo provides enough back pressure. The only real difference is sound.

 

Ok thanks.

 

i got a 4in dp to 5in out diamond eye for 350 it sounds alot meaner but im going with 5 to a single stack

 

i have a custom fabricated 3 to 5 inch flange right off the turbo. my downpipe is 5 inch all the way down past the firewall and straight back. got the 5 inch from a buddy for 175 bucks. i personally like both 4 and 5 inch. i love the deep 5 inch drone at about 2100rpm but then i hear other 24v's with 4 inch straight pipe and it has a louder high pitch noise to it. they both sound badass. just preference. 4 inch is easier to fit down past firewall and doesnt take up as much space as 5 inch.

 

4in is gonna be louder because it being smaller diameter but i like the 5in personally its got a nice deep drone sound to it