mufflers, what sounds good on the 1st gen.

[Josh S.]

yah i like dogs better

 

[Byrd91]

If cats were useless the OEMs would be fighting to get rid of them to reduce the costs to overcome the other emissions equipment that is required. I'm not an expert on the topic so I can't explain why some guys explorer passed emissions with no cat. I am an engineer so my best guess is the fact that the allowable limits for an early 90s SUV probably are no where near what they are today and the fact that the only emission mentioned in that test is unburned HCs. This is only part of the emissions, and the part which is most effected by proper tuning. I do agree that on a properly tuned, fuel injected vehicle the cats may not be as critical, but there is no way the entire auto industry would just do it because the EPA says, they're obviously doing it because tuning alone isn't the answer. Again I make the simple statement, running without cats is illegal and irresponsible.

 

[darrellx14]

I run no catalytic converters, and a Borla 1 in 2 out with dual chrome 5" tips. Sounds pretty dern good for a 6 cylinder

 

[cculter]

Here is a video of mine. I still have the cat, it is a flowmaster single in (3")dual out (2.5"). http://www.explorerforum.com/files/41144/100_2244.MOV

 

[Spdrcer34]

hey dude....you've got a brake light out! LOL

That sounds decent.....but you can still tell it's a V6....On our (her) `93, we have a custom 3" cat-back (SOME say 3" is too much, but I think it gives a PERFECT exhaust tone), and a Ravin Muffler (Midas' Brand, Flowmaster Kock-off) AND I still have both cat's in place, and operational...

Maybe tomorrow I'll clean up the Green X, and get a video/audio clip of it...

I'll need someone to host the file though, as I don't think I can post it here.

Ryan

 

[pughman]

http://www.putfile.com/

 

[cculter]

hey dude....you've got a brake light out! LOL

That sounds decent.....but you can still tell it's a V6....On our (her) `93, we have a custom 3" cat-back (SOME say 3" is too much, but I think it gives a PERFECT exhaust tone), and a Ravin Muffler (Midas' Brand, Flowmaster Kock-off) AND I still have both cat's in place, and operational...

I know I found that out after I made the video. I still have the cat on too.

 

[urbanistic]

I got a hi-flow cat and a flowmaster. Replace your stock cat, they blow...

Flowmaster is the best sounding in my opinion.

 

[BDAB]

I wish I had left the exaust alone on my suburban. I bought a dynomax dual exaust kit for a 74 suburban and used 3" (40" long) glass packs and it sounds good (like a big block) at low rpm's (under 2000) but its just too loud and sharp at high rpm's, I lost some low end torque by taking out the cat and there is no glug glug sound, however, the power curve is alot smoother.

on my last (all stock 91) explorer I took the muffler out and put in a highflow cat and straight pipe (2.25" in, 2.5" out) and a 3.5" oval resonator tip. sounded really good and I kept the back pressure so no changes to the power curve. might also want to go to a tractor supply shop and buy a tractor muffler, then your sploder will sound like a big rig.

when I redo the Suburban it will be back to single exaust with tri-y headers (1 3/4" at the port, 2.5" at the collector), 2.5" in and 3" out y-pipe, 3" highflow cat and a flow master 3" in and dual 3" out with 6" (18" long) chrome tips with a 3.5" resonator inside (thats how you get the big block glug glug with a small block or a V6).

the explorer will have tri-y headers and single 2.75" with a highflow and a tractor single in dual out muffler