Has anyone installed a duel exaust on their Aero. I have to replace the one on mine, but just to replace the single one NONO. I'm looking to replace it with a true duel one. But don't know if I could with the gas tank so close to the drive shaft. And also the O2 . There is only one, would I have to run one on each pipe. I have seen only one one this forum with a duel outlet on each side. I'm not a 3 thumb guy, I have a lot of auto knowledge. But I was told by most muffler shops I couldn't do it. Can anyone help? And give some insight.
Thanks

 

What's the American expression, "let sleeping dogs .....?" Whatever it is, I believe it.

 

The fuel tank is what concerns me. Its plastic so running a pipe next to it would be idiotic. I am currently doing what you are and I want the true dual exhaust. I am cutting off the pipes before the cats and running two pipes next to each other to the back. They are both gonna go on the opposite side of the gas tank. After the rear axle, I'm going to split them up and run one behind the left wheel, and one behind the right wheel. Will be putting on bomb mufflers. Cant wait to hear the sound of my aero.

 

John,

Keep us posted on your project! Would love to see the finished product. Also any info on power/mpg gains.

John

 

The only problem is the pipe length. The back presure will not be the same. But are you using two O2 sencers, or one? I may try what your doing though. I'm looking at using 2 1/2-3" pipe.
If this doesn't work. I may just do what I have now, single with 3" pipe but use an 1 in 2 out muffler.
I'm going to add a new throttle body 66mm. If I can get the HP up to 175, and Trq to 275. I'll be happy with that. I have seen a Ranger 4lt upto 250hp+ with no real mods.

 

on my 91 3.0 I tried everything to get dual exhaust in. the problem lies in the fact that the O2 sensor is just behind where the two pipes merge, not knowing how the van would run with 2 o2's or just one on one side, I just split the exhaust after the o2 again. then I got 2 sections of tailpipe that were pre-bent to go over the axle. I figured I could lengthen one a couple inches so they could run side by side over the axle and out the rear like stock. wouldnt fit like that. with no way to cross over to the other side, I just dumped both sides out in front of the rear wheel, under the running boards. I did also remove BOTH "cats".

as for the mufflers, I figured if I put a cherry bomb on both sides it would be quieter. NOT. I guess the effect of 6 cylinders firing in order through one bomb cancels out a great deal of the noise, spliting the exhaust up and then sending it all chopped up through 2 sides really made the van loud and honestly not that pleasing to listen to. it was however most pleasing to frighten little honda boys while sitting at stop lights! with the exhaust pointing at their drivers window its really hard to ignore, and downright obscene during acceleration.

I know this is a no-no, but dropping it in drive after a few good revs would break the rear wheels loose and I could burn off both rear tires across the entire intersection.

the look on honda boys' faces is priceless. how often to you see a minivan roast them off like that?

bottom line, it will give you noticable power, at the price of "holy-crap that van is loud" its not really that much of a pain if you bend to the vans will, rather than make the van take twice the pipe she was made for.

I just got a 95, 4.0, E4WD EXT, and I plan to take out the cats, but I am staying single pipe, and instead going with a performance muffler that adds a deep tone and doesnt rattle your soul during acceleration.

hope this helps!

 

I have a 92 4.0 extended xlt. For a first step (and the necessity of passing Texas annual inspection) I put a 2 1/2 pipe from the cat back to a magnaflow muffler. Very nice sound. Step 2 and what I plan to make a bigger difference is to cut the header pipes, and join them into a 2.5" pipe and a 2.5" cat and into the current cat back part.