03-11-2020, 04:02 PM
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#1
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Thoughts on resonator delete?
Ive been considering the resonator delete and exhaust rerouting for a few years now since I’m often riding around with the back window down and whenever I really step on the gas it smells like rotten eggs in the cabin.
I’m nearing old fogie status and really don’t want to add any additional loudness or drone to the 4Runner.
For those of you who have done this mod, are you happy with the results? Would you do it again? Do you have any issues with droning on the highway when cruising along with cruise control?
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'99 SR5, 2007 Sport
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03-11-2020, 04:24 PM
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#2
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I relocated mine. Best of both worlds IMHO.
Mine is now before the muffler and after the y-pipe merge. Had a shop weld it basically between the two exhaust hangers.. I did it on a Gibson side exits exhaust and it's quieter than stock now. I did do a 1/4 wave drone-delete, but I'd bet the resonator and stock muffler will probably be fine alone since there's no drone on the factory system.
I will say that while the side exit helps a lot, the biggest help was new cats in the y-pipe. Well, scratch that, the biggest help was removing the worn out cats in the exhaust manifold when I did long tubes. Seems like the rotten egg smell was almost created by the bad cats rather than a result of poor filtration, if that makes sense. I'm running on 2 new cats with LESS smell than the 4 old ones.
Not suggesting you do the same mods, I'm just saying that rerouting will only fix about half of the instances where you notice the smell.
FWIW, I'm a windows down guy, and I don't like loud exhaust at cruising speeds or rotten egg smell. I've got the rear window down anytime it's not pouring rain or way too cold.
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03-11-2020, 04:25 PM
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#3
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Senior Member
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Join Date: Aug 2018
Location: MA
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ive researched this and it doesnt change the sound or performance is the consensus.
maybe one instance someone thought it was louder but the majority dont.
when i step up my tools game im going to make the cut. my concern was it affecting MA inspection laws on modified exhaust.
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03-11-2020, 07:38 PM
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#4
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Join Date: Mar 2015
Location: Sacramento CA
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I cut mine off the first week I owned the truck. Not sure that it did anything different.
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2005 Blue SR5 v8
3" suspension lift, 1" body lift, 315's, rear Elocker, on-board air system, slider air tanks, full skid plates, front Demello bumper, rear HMF plate/tube bumper, rear 9000lb hidden winch, front 10000lb winch, dual electric fans (in cab adjustable temp), rock lights, 25W LED projector lights.
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03-11-2020, 11:24 PM
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#5
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Join Date: Apr 2016
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I cut mine off as it kept acting like a plow on the trails. I routed the exhaust out the side and did not notice any sound or performance impact. Glad it's gone. Go for it! Save it and weld it back on for inspection if needed.
Sent from my SM-N950U using Tapatalk
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2007 Limited 4x4 - UnJeep - AKA "DAS 4RNR"
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03-13-2020, 11:33 AM
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#6
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Join Date: Jul 2016
Location: Calgary, AB
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I had a shop remove the resonator and reroute out the side.
I noticed the smallest change in sound. Had a little more meat to it and a slight more drone at around 2k Rpm.
Since then I have added a Flowmaster 50 muffler in which gave the V8 the sound I wanted but also increased the drone quite a bit.
I've learned to live with it and this thing is just getting noisier with every item I had.
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Whytey's 07 V8 Build Thread
2007 Toyota 4Runner Sport Edition V8, Elka 2.5 Suspension, Total Chaos UCA w/ Delta Uniball, Dobinsins C59-677V Rear Coils, Timbren Bumpstops, Prinsu Design Roof Rack, Baja Designs Squadron Sport Fogs, 285/70R17 BFG KO2, Blacked Out TE Rims, Spidertrax 1.25" Wheel Spacers, Satoshi Grill
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03-14-2020, 05:01 AM
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#7
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Join Date: Feb 2015
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Cut it off and don't look back! I got ride of mine a few years ago and couldn't notice any difference in sound. Routed out the side helped a good deal with the sulfur smell too
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03-14-2020, 11:47 AM
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#8
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Join Date: Jan 2013
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Quote:
Originally Posted by Whytey
I had a shop remove the resonator and reroute out the side.
I noticed the smallest change in sound. Had a little more meat to it and a slight more drone at around 2k Rpm.
Since then I have added a Flowmaster 50 muffler in which gave the V8 the sound I wanted but also increased the drone quite a bit.
I've learned to live with it and this thing is just getting noisier with every item I had.
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We have different engines, but I had a similar issue. I wanted a little extra tone to the exhaust but after doing a few things it was just too much and the drone was annoying as hell. I added a Vibrant Ultra Quiet Resonator after the muffler and the drone is gone. I’m honestly amazed at just how much it did tone it down. I have it mounted almost vertically on the backside of the rear axle with a side exit exhaust so it’s tucked up and out of the way.
It’s frankly almost too quiet now, but I’ll take that over the drone every time.
So if you’re looking to keep the general tone of your exhaust but want the drone dialed back and general loudness down a notch or two, I’d highly recommend the ultra quiet resonator.
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2005 SR5 V6
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03-14-2020, 02:02 PM
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#9
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Join Date: Mar 2018
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Mine got smashed on a camping trip, so I cut it off right where it comes over the axle, never looked back. I don't drive with the rear window down, so I've never had a problem with smell, and it did not change the sound.
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
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03-15-2020, 08:44 AM
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#10
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Quote:
Originally Posted by 81runner
Mine got smashed on a camping trip, so I cut it off right where it comes over the axle, never looked back. I don't drive with the rear window down, so I've never had a problem with smell, and it did not change the sound.
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I did the same, just preemptively.
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2003 4Runner Limited 4wd V8 - Build thread on Tacoma World
FJ tcase swap, VVT intake swap, Solid Offroad motor mounts, Doug Thorley y-pipe, Bold Performance cat-back, ADS shocks F&R, Metal Tech LTHD springs rear, 1" body lift, 285/75/17 Toyo R/T Trails on Sequoia rims, Coastal front bumper, CAD rear bumper
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05-04-2020, 10:51 PM
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#11
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Join Date: Jun 2019
Location: Nevada
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Real Name: Matt
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I just cut my resonator off this past weekend and welded a 2.5” 90° elbow out the side. No noticeable gain in mpg, performance or sound. I can’t notice any drone at freeway speeds due to the fact my roof rack, light bar and tires are noisy.
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Build thread: https://www.toyota-4runner.org/4th-g...ld-thread.html
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04-28-2022, 07:32 PM
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#12
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For anyone searching in the future, the resonator delete and exhaust re-route is a must do.
The resonator delete made absolutely no difference in sound with the v6. I’m honestly not sure what frequency it’s designed to block out, but I can’t tell any difference with th windows up or down
And the routing out exhaust out the side instead of rear makes a HUGE difference in regards to the cabin exhaust smell when riding around with the rear window down
It also looks much cleaner in the rear too with a chrome tip instead of that ugly black tailpipe
Cost was $125 at local shop and took them 20 mins tops
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04-28-2022, 09:51 PM
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#13
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Chopped mine off after the axle so it dumps down. I had intended to reroute it to the side, but I never found an exhaust I liked. Hasn't caused any issues under the vehicle having been like that for years, the V8 sounded a little throatier at full tilt after the chop, but nothing I would write home about.
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04-29-2022, 12:02 PM
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#14
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Junior Member
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Join Date: Mar 2022
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Quote:
Originally Posted by twa318
Ive been considering the resonator delete and exhaust rerouting for a few years now since I’m often riding around with the back window down and whenever I really step on the gas it smells like rotten eggs in the cabin.
I’m nearing old fogie status and really don’t want to add any additional loudness or drone to the 4Runner.
For those of you who have done this mod, are you happy with the results? Would you do it again? Do you have any issues with droning on the highway when cruising along with cruise control?
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I accidentally backed into a rock that bent my exhaust and knocked it off the hanger. To have it fixed I had it turned and the resonator removed. It's a bit more throaty without it, but it's marginal
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2008 4Runner V8 4WD Limited (Dobinsons 2.5 inch lift, JBA UCAs, 265/65r18 KO2s)
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04-29-2022, 01:21 PM
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#15
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2003 Limited V8 4runner - 37's, Tacoma Front End swap, ARB locked front and rear , LC200 rack swap
Last edited by aemravan; 04-29-2022 at 01:24 PM.
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