Aftermarket exahaust opinions help

[kp66]

Anyone have advice on what brands and sytems to run for best power and mpg gains. I am looking for something thats not too loud but has all the rewards a aftermarket systmes should have.

Any recommendations and rough prices would be much help. I also currently have a air raid CAI dealeadd on, not sure if it really has done anything.
Thanks

 

[NoHandleBars]

In all honesty, the best bang for your buck is just replacing the muffler, as that is the most restrictive part in your entire exhaust system if you have the stock one. If you want a FULL exhaust system...JBA makes the best bang for your buck out of a FULL system, all SS. AFE now makes one, and of course TRD and Magnaflow and even Flowmaster. I can't recommend the flowmaster as I believe it sounds terrible on our engine. Almost a month after I swapped a Flowmaster in place of the TRD muffler I replaced it with a Magnaflow...couldn't stand the Flowmaster sound, sounded great on my old V-8 Dodge...but not for toyota V-6.

 

[Toledo FJ]

I have the JBA headers and exhaust and I highly recommend it. Get it from Underdog Racing Development.... They have the best prices I found and they are all really cool, helpful dudes. Especially gadget. - Underdog Racing Development

I know AFE just came out with a new 3 inch exhaust... I'm sure it kicks ass. Don't know the price though.

The JBA setup isn't too loud, but when you step on the gas.... watch out. It sounds AWESOME!

 

[NoHandleBars]

Take into consideration that it dosen't matter if AFE's exhaust is 3" (0.5" bigger than stock) as your exhaust manifold\headers are 2.5".

 

[XDodgeFJ2]

Doug Thorley makes full length long tube headers if you want to really notice a difference performance wise.Just keep the OA stuff for your inspections if you live in a "bad place"(Ca emmissions....).If you want to spend the cash-do whole system-that will get you around the flat spot in the "y" piece, after the tubes come together , most sytems are 2 1/2" and 3"(with the headers- yes the initial restriction with size is smaller, but remember you have 2 sides feeding the main single outlet, hence the 3").Mine is TRD exhuast from the "y"back, and the TRD muffler looks suspiciously similar to the Gibson muffler(round vs oval).I didn't like the Magna flow sound either-so I left the TRD in place.

 

[NoHandleBars]

Doug Thorley makes full length long tube headers if you want to really notice a difference performance wise.Just keep the OA stuff for your inspections if you live in a "bad place"(Ca emmissions....).If you want to spend the cash-do whole system-that will get you around the flat spot in the "y" piece, after the tubes come together , most sytems are 2 1/2" and 3"(with the headers- yes the initial restriction with size is smaller, but remember you have 2 sides feeding the main single outlet, hence the 3").Mine is TRD exhuast from the "y"back, and the TRD muffler looks suspiciously similar to the Gibson muffler(round vs oval).I didn't like the Magna flow sound either-so I left the TRD in place.

Wow really? Guess we had two different magnaflows. The Magnaflow sounds a LOT like the TRD but has a "deeper" tone to it, but I can easily say it's tone is very close to the TRD< just a tad louder and deeper, my buddies noticed that it sounded a lot like the TRD one as well. Just more "throaty" where as the TRD when pressed down sounded more like a FX-35 Infinti SUV (Ricey sounding)

 

[XDodgeFJ2]

Quick reply typo-don't get yer feathers ruffled.Flowmaster instead of magnaflow-was meant, just not typed.I've heard the exhaust argument a million times-you have TWO 2 1/2" going into one 3" vs one 2 1/2" pipe.More volume into more volume equals less resistance period. I was looking at running duals-
and got several quotes, but 3 of the guys said just run a single 3"and change out the muffler.I went the cheap route and kept the TRD from the "y" back-it gets a lot hotter than before(when it gets mud all over it-it gets seemingly "fired" on and has to be chipped of with chipping hammer if I want it all off the pipe).I f you leave the stock airbox inplace, its probably not gonna matter as you say,even with a K&N or
TRD filter in the box.I have 3" tube from the filter cones running straight into the throttlebody, so I will end up going the 3" exhaust route.

 

[NoHandleBars]

Quick reply typo-don't get yer feathers ruffled.Flowmaster instead of magnaflow-was meant, just not typed.I've heard the exhaust argument a million times-you have TWO 2 1/2" going into one 3" vs one 2 1/2" pipe.More volume into more volume equals less resistance period. I was looking at running duals-
and got several quotes, but 3 of the guys said just run a single 3"and change out the muffler.I went the cheap route and kept the TRD from the "y" back-it gets a lot hotter than before(when it gets mud all over it-it gets seemingly "fired" on and has to be chipped of with chipping hammer if I want it all off the pipe).I f you leave the stock airbox inplace, its probably not gonna matter as you say,even with a K&N or
TRD filter in the box.I have 3" tube from the filter cones running straight into the throttlebody, so I will end up going the 3" exhaust route.

You're post is incredibly hard to follow. Why bother going dual? Just go straight pipe. I always smile when I see a dualie on a V-6 as there is absolutely no benefit. If I did dualie, I'd custom make my own with TRD tips on each end side-exiting. Before that I'd do a exhaust system that exits right under my slider like the TRD Baja....my current exhaust system has zero restrictions, I actually had BACKFIRES because it had so little back-pressure. Changed out to a better spark plug and no more back fires.

 

[XDodgeFJ2]

Internal combustion engines are basically air pumps-x amount of air in.....combustion.....x amount of air out.P-H-Y-S-I-C-S.....3" inlet(intake),......3" outlet(exhaust).I laugh when some people can't understand they can't argue with physics, even if they are really good at utilizing the quote box...and can't grasp complex sentences.

 

[NoHandleBars]

Internal combustion engines are basically air pumps-x amount of air in.....combustion.....x amount of air out.P-H-Y-S-I-C-S.....3" inlet(intake),......3" outlet(exhaust).I laugh when some people can't understand they can't argue with physics, even if they are really good at utilizing the quote box...and can't grasp complex sentences.

Uh, I wasn't even arguing physics? I said you're post is scattered about and hard to follow. I laugh when people don't know how to properly post on a forum, that better? It's impossible to debate with someone who can't even comprehend what the other debater is saying. So I'll let you sleep well to night and say, you're right I'm wrong, just for the sake of not wanting to debate with someone who can't layout what he is saying correctly.

 

[XDodgeFJ2]

Uh, I wasn't even arguing physics? I said you're post is scattered about and hard to follow. I laugh when people don't know how to properly post on a forum, that better? It's impossible to debate with someone who can't even comprehend what the other debater is saying. So I'll let you sleep well to night and say, you're right I'm wrong, just for the sake of not wanting to debate with someone who can't layout what he is saying correctly.

WOW-a debater?...to night....tonight , thank goodness I'll get some sleep.I can't believe you called me a debater,.....really?Maybe I won't get any sleep.

 

[XDodgeFJ2]

3" questions-back to exhaust anyway.

Has anyone done the 3" exhaust size with headers?

 

[NoHandleBars]

WOW-a debater?...to night....tonight , thank goodness I'll get some sleep.I can't believe you called me a debater,.....really?Maybe I won't get any sleep.

When two people are arguing over a product difference it's called "debating" (the difference). Did you not know that?

 

[DrSolar]

WOW-a debater?...to night....tonight , thank goodness I'll get some sleep.I can't believe you called me a debater,.....really?Maybe I won't get any sleep.

3 inch on a V6 is a bit much. Too much exhaust going out can actually cause you to loose power and compression. 2.5 inches and a single pipe should be plenty.

My 5.9L Dodge Dakota had a single 3 inch pipe. That is a more suitable application for that size.

 

[macneill]

I'm surprised nobody has mentioned Borla. I believe they make the TRD system.

The TRDs I've heard on the trails sound quite nice. Good rumble without being intrusive.

 

[FirstToy]

Let's let the moderators worry about spelling & debating style and keep to the topic of aftermarket exhausts If we all focus, it makes this forum that much better for people looking for info in the future. thanks guys!

 

[NoHandleBars]

Let's let the moderators worry about spelling & debating style and keep to the topic of aftermarket exhausts If we all focus, it makes this forum that much better for people looking for info in the future. thanks guys!

Alrighty. In summary of this entire topic: 3.0" will actually reduce low-end torque but WILL gain mid-high end ranges, in reality it is not worth it in the slightest. Key to fixing up and getting the most out of your 2.5" exhaust, get out the bends, get out the chambered mufflers, and go with a high-quality muffler such as Magnaflow that uses a straight-thru design (Borla, TRD, AFE, Flowmaster, Cherry bomb, and so forth, do not).

The more chambers in chambered mufflers = the quiter, more chambers = more restriction as well. Glass-packed are odd, they are specifcally made to be loud, not really yeld performance. Straight-thru like the Magnaflows are the BEST design you can buy.

Here is an example of your average chambered muffler. (This one is a Flowmaster)

As you can see, the exhaust goes through it, bounces around, then exits.

Now the Magnaflow design...

The Magnaflow as you can see, goes STRAIGHT through. The interrior has acoustical fibers and metals that absorb the sound and also DO NOT degrade over time unlike chambers and glass packs. In fact, you can pick up a magnaflow muffler and look straight through it. Look into a Flowmaster, Borla, etc, all you're gonna see is metal staring you right in the face blocking your view.

All in all, ANY of these mufflers will provide a notable increase in "thump" and of course sound. But when it comes down to it, I can't recommend anything else but Magnaflow. I absolutely hated that damn Flowmaster...

 

[FirstToy]

To take into consideration is the lenght of the muffler when considering loudness. The longer the muffler, the more quiet it will be, shape does not matter. Round and oval are the same when it comes to 'loudness' just differing for fitment issues

 

[XDodgeFJ2]

My pipeing measures 3"...? Then again I've cut and sliced my exhaust system so many damn times I have no idea what the original pipe size was. But, either way, 3.0" pipeing when the rest of the exhaust system (manifold\y-pipe or whatever you have) is 2.5"....so whatever. This from from another post you (nohandlebars)made after someone posted a 3" comment.Then you called 'em a "debater"..... The original size was 2 1/4", by the way.It boils down to what you have done to your engine to increase its performance....that covers performance chips, timingchanges,high flow heads,compression ratio changes, gear ratios,and intake improvements etc.If your running(or want run higher rpms) fast-ie desert type it should help you(increasing dia helps when your rpms are higher-more air in , more air out). Install a vacuum gauge,more gas less ass at low vacuum,- less gas ,more ass at high vacuum.

 

[NoHandleBars]

My pipeing measures 3"...? Then again I've cut and sliced my exhaust system so many damn times I have no idea what the original pipe size was. But, either way, 3.0" pipeing when the rest of the exhaust system (manifold\y-pipe or whatever you have) is 2.5"....so whatever. This from from another post you (nohandlebars)made after someone posted a 3" comment.Then you called 'em a "debater".....

From another post? It was your post, and it was you I called a crappy debater because you were argueing what I was saying in a stupid sense with no proof. Larger pipe size = reduced back pressure which can also, and will reduce low-end torque. Why exactly do you think Doug Thorleys have a bad drop in low-end big gain in mid and high on the dynos? You add new headers, a y-pipe, and a total free-flow exhaust system, then you have lose even MORE low-end torque, with the way mine is I noticed it instantly. And MOST people from what I've gathered who drive FJS are not red-lineing it often if at all, they cruise around at pretty low-mid-range RPM where a 3" exhaust or header upgrade would do little to nothing for them, and that's my point. Go back to bed, you're terrible at following.