New exhaust system for 04 4Runner v8

Sounds good. I vae the 06 v8 and am thinking of doing similar. I have the doug thorleys ready but honestly just want stock exhaust setup beyond that. I dont want loud and cant stand droning at all.

What did this whole thing cost you? Especially curious on the labor.
 
meltdowner said:
Sounds good. I vae the 06 v8 and am thinking of doing similar. I have the doug thorleys ready but honestly just want stock exhaust setup beyond that. I dont want loud and cant stand droning at all.

What did this whole thing cost you? Especially curious on the labor.
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I imagine that just doing the headers won’t add too too much noise. If you’re keeping everything else stock you should be good there.

My labor bill was $950 which includes headers, “front pipe” fabrication, welds, and install of the bolt-on cat-back. I’ve seen folks on the forums talking about labor quotes upwards of $2k just for the headers. I shopped around a few shops, a couple wouldn’t do headers and one I got a ~$1.2k estimate. It all depends where you’re located I think.
 
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[MENTION=299033]j4x4v8[/MENTION] sensors are new? where did you source the AF sensors? You might already know there has been complaints about Denso bootleg parts out there. Do you have your old ones you could swap out? And of course check the connector and wiring as well. Sounds amazing, way better than mine. My old muffler is getting a louder drone by the day.
 
4RunnerAquasport said:
[MENTION=299033]j4x4v8[/MENTION] sensors are new? where did you source the AF sensors? You might already know there has been complaints about Denso bootleg parts out there. Do you have your old ones you could swap out? And of course check the connector and wiring as well. Sounds amazing, way better than mine. My old muffler is getting a louder drone by the day.
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Thanks man! Yep they’re new, and unfortunately I found out about the bootleg parts after I ordered them from Amazon. I just checked and it was sold by Amazon services, not a 3rd party seller, but still a cause for concern if the market is being flooded with fakes. I may have accidentally left the old sensors on the manifold converters I sent to get scrapped (oops)
 
j4x4v8 said:
Thanks man! Yep they’re new, and unfortunately I found out about the bootleg parts after I ordered them from Amazon. I just checked and it was sold by Amazon services, not a 3rd party seller, but still a cause for concern if the market is being flooded with fakes. I may have accidentally left the old sensors on the manifold converters I sent to get scrapped (oops)
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Sorry to hear that. From what I can tell, the dealer or Rock Auto might be your only option. Rock Auto being much cheaper if they are in fact genuine Denso. Quick search showed $175 for the right front on a dealer site, ridiculous. Try a quick search of the pick and pull yard in your area if you have the time. You might get lucky and find one that works for pennies on the dollar. Lexus 470s might work as well as Tundras. Just my opinion, but we need to weed out the crap that's getting sent to this country and bring some viable production back here as well. The management of these online stores don't care about QC, just bottom line. Sick of these people that compromise everything in the name of acquiring their next Mercedes. Good Luck!!
 
j4x4v8 said:
\

Hey [MENTION=102822]JONBOY345[/MENTION] do you have that Vibrant Resonator right before the Magnaflow muffler? How's the sound? Is it just as loud everywhere else for the most part, and the resonator gets rid of the droning? Would love your thoughts since I realized we have a pretty similar exhaust setup minus the Y-Pipe.

P.S. I sold my old cats to RRCats, $103/ea for the manifold cats and $73 for the Y-Pipe cat.



Pictures of the welds & underside coming very soon :)
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Looks great. I really like the look and sound of the Magnaflow kit. Added bonus is that it's a straight-through muffler unlike other options out there.

I do have the Vibrant Resonator before the muffler and it did noticeably help with the droning. It didn't eliminate it completely but certainly took it down a notch or two. As both the muffler and the resonator burn-in (due to the fiberglass packing material) it will get a bit louder. It happens so gradually you'll hardly even notice the change unless you compare some recordings of it.

Here's the link to the post I made about the Catback project: https://www.toyota-4runner.org/3253598-post32290.html

Note I had OEM Manifolds, and y-pipe at the time of the post.

That said, if I were to do it again, I'd get a 1/4 Wave Resonator instead. I took it to a shop recently to have them look at that, and they said there wasn't room to do one.

But, dirty deeds has a helmholtz resonator they make... Might be worth calling them to see if it works on our trucks: Helmholtz Resonator - DIRTY DEEDS INDUSTRIES
 
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j4x4v8 said:
I imagine that just doing the headers won’t add too too much noise. If you’re keeping everything else stock you should be good there.

My labor bill was $950 which includes headers, “front pipe” fabrication, welds, and install of the bolt-on cat-back. I’ve seen folks on the forums talking about labor quotes upwards of $2k just for the headers. I shopped around a few shops, a couple wouldn’t do headers and one I got a ~$1.2k estimate. It all depends where you’re located I think.
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Wow $950 is cheap... I'm getting a quote for $1500 up in NoVA. Which shop did you have it done at in Richmond?
 
Hi I need help with this as well in the same boat but V6 2004

My left rear catalytic converter has gone bad and I live in NY. I was thinking of using Bosal but they don't comply with NY/CA standards. I have to get something that does. I was thinking Magnaflow but I don't know if aftermarket CAT would remove the CEL. Can someone please advise on what my options are in NY. I don't want to use Universals because I don't want to depend on the quality of the weld job. Thanks in advance.
 
ryanarcane said:
My left rear catalytic converter has gone bad and I live in NY. I was thinking of using Bosal but they don't comply with NY/CA standards. I have to get something that does. I was thinking Magnaflow but I don't know if aftermarket CAT would remove the CEL. Can someone please advise on what my options are in NY. I don't want to use Universals because I don't want to depend on the quality of the weld job. Thanks in advance.
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I only have one rear cat, so I can’t speak to your vehicle specifically. However if you’re getting a direct fit MagnaFlow replacement cat, like I got for my Y-Pipe (see my parts list), then you shouldn’t have any issues with CEL. The direct-fits are made to be replacement OEM parts, and will have the O2 sensor bung included if necessary. MF should make a bolt-on replacement cat for your vehicle that’s NY compliant if you check their site.

If you did universal cats you would probably need the O2 sensor bungs welded on as well. I wouldn’t worry about the quality of the weld job as a factor. If an exhaust shop with good reviews couldn’t weld exhaust pipe, they probably wouldn’t be in business.


V8Limited4wd said:
I might have to take mine there to get it done. How long did it take and did you go back home then go back once they were done?
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Yeah you would have to leave it there. Drop it off the day before, so vehicle is cold in the morning. I was fortunate enough to have a friend follow me both times, so I didn’t have to do a $70 Uber. Overall took 5 days if you include day I dropped off and day I picked up. Also like I had mentioned in an earlier post on this thread, the DT ST had quite the fitment issues. I believe the job ended up being more difficult and time consuming than expected.
 
j4x4v8 said:
I only have one rear cat, so I can’t speak to your vehicle specifically. However if you’re getting a direct fit MagnaFlow replacement cat, like I got for my Y-Pipe (see my parts list), then you shouldn’t have any issues with CEL. The direct-fits are made to be replacement OEM parts, and will have the O2 sensor bung included if necessary. MF should make a bolt-on replacement cat for your vehicle that’s NY compliant if you check their site.

If you did universal cats you would probably need the O2 sensor bungs welded on as well. I wouldn’t worry about the quality of the weld job as a factor. If an exhaust shop with good reviews couldn’t weld exhaust pipe, they probably wouldn’t be in business.




Yeah you would have to leave it there. Drop it off the day before, so vehicle is cold in the morning. I was fortunate enough to have a friend follow me both times, so I didn’t have to do a $70 Uber. Overall took 5 days if you include day I dropped off and day I picked up. Also like I had mentioned in an earlier post on this thread, the DT ST had quite the fitment issues. I believe the job ended up being more difficult and time consuming than expected.
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Thanks for the info! Hope to finally get it done this summer. Did you ever consider just getting a straight Y-pipe without the third cat? Wonder if that would trigger the check engine light.
 
I'm not sure about pricing, but I found a set of two magnaflow OEM grade cats (#51005) and the standard Y-pipe (#93655) for $600... not sure if that's a decent price.
 
V8Limited4wd said:
Did you ever consider just getting a straight Y-pipe without the third cat? Wonder if that would trigger the check engine light.
Click to expand...

Yes it would trigger the CEL if you got the straight Y-pipe. But that’s exactly what the Blox O2 spacer is for, removing that CEL. I didn’t consider it myself because I wasn’t the one doing the install. Due to the legality aspect, exhaust shops / installers won’t do that kind of work (unless you have a real good relationship with them). I went into a few exhaust shops to talk over the job and get estimates and they would always slip in something about “gotta keep the cats — gotta have the cats” into the convo. I guess on the off chance I’m state police? Hah.

V8Limited4wd said:
I'm not sure about pricing, but I found a set of two magnaflow OEM grade cats (#51005) and the standard Y-pipe (#93655) for $600... not sure if that's a decent price.
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Yep #93655 is the Y-Pipe/Cat I got. Was $236 on Amazon, $280 after shipping/taxes. If you are going to stay legal that would be the one to get.

As for the (2) #51005’s .. I actually had those on my parts list originally. But I wasn’t sure if those cats are meant to go directly after the headers, or if they’re only for the rear. I ended up going with the G-Sport cats to play it safe, but I would give Magnaflow a call and ask.

Overall $600 does seem like a decent price for all (3)
 
Thanks for the initial post on the parts you used. This is likely the route and parts I will go when I do my 2003. Should be virtually identical unless I decide to go with long tubes. But I'll still run the cats.
 
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