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  #1  
Old 05-19-2016, 11:45 AM
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5.7L Hemi - DIY Exhausts?

Hey all, we just picked up our '16 High Altitude w/ the 5.7L Hemi a few weeks back:











The Hemi was the quietest factory V8 I think I've ever heard. We sold my lady's '06 5.7L Hemi Ram 1500 before buying the Jeep, and that had a straight-through muffler and turn-down and was very loud. We didn't want to go THAT loud again, but we do want more volume and a good tone.

So far we removed the factory mufflers and added an H-pipe, leaving the factory resonators in place.

It certainly helped, but honestly it's still pretty quiet. The tone is good, and with the exhaust change and the AFE CAI at WOT past about 4k it starts to come alive, but overall it's just too quiet.

I don't want to just ditch the resonators all together, as I think it will become obnoxiously loud and also lose some of the deep, clean tone. Has anybody found a good bullet-type, straight-through muffler that will fit in place of the resonators to increase the volume while still keeping the deep, clean sound?

I know I could go with a complete Corsa system, but honestly their offering for the 5.7L JGCs is pretty mild too, and at $1,700 I just don't see the ROI. I know it might pickup a few HP vs. what we're doing, but this isn't a race car and I don't think ~5 RWHP is going to provide that much seat-of-the-pants difference in a SUV of this size/weight. Also, with the High Altitude the exhaust tips are a pretty unique size/shape. So far we're still utilizing the factory tips, which I think will look best.

So, what have you done and how are your results?

-TJ

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  #2  
Old 05-19-2016, 06:31 PM
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Re: 5.7L Hemi - DIY Exhausts?

I'm on the same boat as you. Its nearly 2 yrs and haven't pulled the trigger. I want loud, but these setups that are out there are not what i'm looking for and specially for 1k i do not want to pay that much for a robotic tone.

I'm gonna go custom setup. I've narrowed it done to 2 mufflers. Flowmaster supper 10's or a new company called Carven, their R series mufflers sound nice. As a matter of fact my bro-in-law just got the carven on his 2015 Silverado. Hes got the 5.3 and sound pretty good and all he added was the muffler and got rid of the tip, nothing more and sounds pretty nice. Rarely any drone.

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Old 05-21-2016, 10:31 AM
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Re: 5.7L Hemi - DIY Exhausts?

I like aggressive exhaust and I think the corsa is pretty aggressive when you romp on it.

To me any more aggressive and would be too much. Unless you're looking for open headers kinda sound...or your 16...which doesn't suit the vehicle haha.


I had kooks headers and kooks exhaust on my SRT, it sounded awesome (drones though)....my 5.7 with just the corsa sounds almost as crazy...no drone.

I'd bet you haven't heard the corsa in person.
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Old 05-22-2016, 12:29 AM
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Re: 5.7L Hemi - DIY Exhausts?

Hello I have an older 2005 GC with the 5.7 Limited. It has single exhaust which I think is leaking at cat connection. I know this is an older model but does anyone have a recommendation for an exhaust upgrade for this vehicle. i figure I'm going to have to fix this and I would love dual exhaust on this truck. If i can't maybe someone knows of a good single system. i'm not looking for real loud but this truck is very quiet so a little deeper tone on acceleration without being too loud would be cool. Thanks, and nice GC i love the newer ones too.
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Old 05-22-2016, 01:39 AM
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Re: 5.7L Hemi - DIY Exhausts?

Youtube flowmaster super 10 jeep. There are a couple vids of 2nd gen GC v8's running that setup.

There
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Old 05-24-2016, 02:28 PM
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Re: 5.7L Hemi - DIY Exhausts?

For my setup, I first installed a 2 1/2" Corsa catback exhaust. It went on in only a couple of hours with just putting the Jeep up on race ramps. I loved the sound but I wanted more. I then installed a K&N CAI and it added more sound than I was expecting. For some reason, even though I was very happy with the sound, I wanted to make it complete with headers. I sprung and got a set of American Racing 1 7/8" x 3" headers and I love how it sounds now (a complete headache and 8 hours later). I'm considering a set of electric cut outs before the mufflers because it sounds MEAN with them off. Over all, I highly recommend this setup if you don't mind spending a bit of money.
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Old 05-25-2016, 01:04 AM
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Re: 5.7L Hemi - DIY Exhausts?

Thank you for the advice. I use this vehicle primarily but my GF drives the kids to school,church, etc. so i want something that is moderately performance sounding when you step on it but quiet under idle and cruising. I live in a city where the authorities are biased against performance upgrades (and that's being understated). i love the performance of the Hemi but the stock exhaust is very quiet. i don't mind it quiet when idling or cruising but say passing or getting on the highway it would be nice to hear some of the power. Again no setting off car alarms and getting dirty looks from ignorant people would be awesome. My stock exhaust is making a leaking pis pis pis noise at the converter so I was looking for a reasonable performance mod while resolving the issue. Dual exhaust would look so cool on this truck so if no performance increase but looks increase is ok. I just don't want unwanted attention maybe just a nice mild burble on moderate passing or hard launch. I want to try to get it right without experimenting too much cash. I have to change all fluids and tune up the engine too. Thanks
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Old 05-25-2016, 04:36 PM
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Re: 5.7L Hemi - DIY Exhausts?

Thanks for all of the replies everybody, I'll try to respond to each of you.

Overall I'm actually happier with what we ended up with than I originally thought. I drove the JGC again yesterday (it's my lady's daily driver) and it really sounded "right" to me. I'd still like a bit more volume at idle/cruise, say 20% but anything over about 50% throttle sounds really, really good.



Quote:
Originally Posted by ssgunner View Post
I'm on the same boat as you. Its nearly 2 yrs and haven't pulled the trigger. I want loud, but these setups that are out there are not what i'm looking for and specially for 1k i do not want to pay that much for a robotic tone.

I'm gonna go custom setup. I've narrowed it done to 2 mufflers. Flowmaster supper 10's or a new company called Carven, their R series mufflers sound nice. As a matter of fact my bro-in-law just got the carven on his 2015 Silverado. Hes got the 5.3 and sound pretty good and all he added was the muffler and got rid of the tip, nothing more and sounds pretty nice. Rarely any drone.

Happy Hunting...
Once you do your exhaust I'd love to get some clips. Personally, I've never been a big Flowmaster fan, but they've come out with some better products in the last few years. "Back in the day" Flows often dynoed worse than stock stuff... but their new offerings are much better. I actually just put a set of Flowmaster Race Collector/Mufflers on my 454cui LS7 sand rail:




(the full exhaust is getting coated black, and all the tin work will fit back on)

Here's the car:


We re-did the intake setup too:


Quote:
Originally Posted by ILLSMOQ View Post
I like aggressive exhaust and I think the corsa is pretty aggressive when you romp on it.

To me any more aggressive and would be too much. Unless you're looking for open headers kinda sound...or your 16...which doesn't suit the vehicle haha.


I had kooks headers and kooks exhaust on my SRT, it sounded awesome (drones though)....my 5.7 with just the corsa sounds almost as crazy...no drone.

I'd bet you haven't heard the corsa in person.
I've heard the Corsa, it's pretty good at WOT, but doesn't have much of the deeper rumble at idle/cruise. It's nice, but not $1,700 nice IMHO.

I'm not 16 (34 actually) and no, I don't want an open-header sound. I know what a pretty much straight through exhaust sounds like (see above, plus I had plenty of them on my race cars over the years). Even if I did eliminate the resonators I don't think the volume would be anything like a true straight-through exhaust due to the cats. The cats muffle and change the sound a good bit.

That said, I don't think I'd be a fan of the sound if I took the resonators out with no mufflers. You need something to create/control the tone, or it just sounds like you took a sawzall to your exhaust... so I do agree there.

Quote:
Originally Posted by colonelD33 View Post
Hello I have an older 2005 GC with the 5.7 Limited. It has single exhaust which I think is leaking at cat connection. I know this is an older model but does anyone have a recommendation for an exhaust upgrade for this vehicle. i figure I'm going to have to fix this and I would love dual exhaust on this truck. If i can't maybe someone knows of a good single system. i'm not looking for real loud but this truck is very quiet so a little deeper tone on acceleration without being too loud would be cool. Thanks, and nice GC i love the newer ones too.
You might want to look into just having a reputable local shop build you a system vs. going with an off-the-shelf option.

Quote:
Originally Posted by ssgunner View Post
Youtube flowmaster super 10 jeep. There are a couple vids of 2nd gen GC v8's running that setup.

There
Really not a fan of the old Super 10s... also, 2nd Gen JGCs would be the 4.7L V8, very different motor with a completely different sound of their own.

Quote:
Originally Posted by JPSch View Post
For my setup, I first installed a 2 1/2" Corsa catback exhaust. It went on in only a couple of hours with just putting the Jeep up on race ramps. I loved the sound but I wanted more. I then installed a K&N CAI and it added more sound than I was expecting. For some reason, even though I was very happy with the sound, I wanted to make it complete with headers. I sprung and got a set of American Racing 1 7/8" x 3" headers and I love how it sounds now (a complete headache and 8 hours later). I'm considering a set of electric cut outs before the mufflers because it sounds MEAN with them off. Over all, I highly recommend this setup if you don't mind spending a bit of money.
Do you have high-flow cats w/ the AR header setup, or did you delete the cats? Did you have it tuned after going to the headers?

Quote:
Originally Posted by colonelD33 View Post
Thank you for the advice. I use this vehicle primarily but my GF drives the kids to school,church, etc. so i want something that is moderately performance sounding when you step on it but quiet under idle and cruising. I live in a city where the authorities are biased against performance upgrades (and that's being understated). i love the performance of the Hemi but the stock exhaust is very quiet. i don't mind it quiet when idling or cruising but say passing or getting on the highway it would be nice to hear some of the power. Again no setting off car alarms and getting dirty looks from ignorant people would be awesome. My stock exhaust is making a leaking pis pis pis noise at the converter so I was looking for a reasonable performance mod while resolving the issue. Dual exhaust would look so cool on this truck so if no performance increase but looks increase is ok. I just don't want unwanted attention maybe just a nice mild burble on moderate passing or hard launch. I want to try to get it right without experimenting too much cash. I have to change all fluids and tune up the engine too. Thanks
I'll post some pics/vid of what we ended up with so far when I get a chance.

-TJ
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  #9  
Old 05-26-2016, 09:02 AM
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Re: 5.7L Hemi - DIY Exhausts?

This is the exact setup I went with. I have yet to do a tune but I've been trying to find some time and a shop that won't rip me off TOO badly.

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Old 05-26-2016, 10:50 AM
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Re: 5.7L Hemi - DIY Exhausts?

Thank you. i am not looking for anything radical just a dual exhaust that improves the look and perhaps performance (that would be great) without being overly loud. I use the vehicle as daily driver and i just want to enhance it while fixing an exhaust leak. I would prefer something that compliments the Hemi power under almost heavy throttle and a ballsier idle without drawing unwanted attention (AKA authorities pulling you over). Has anyone done a dual exhaust for the 2005 Hemi 5.7 that does this without busting the bank or being too loud. I recall a few years back I had a exhaust shop do a custom cat back on my 2005 Ford Exploder with the 4.6 V8 and it was perfect only deep note on aggressive acceleration. It was perfect for a family SUV not over the top but complimented the V8 perfectly. This system was expensive though. It used magna flow muffler one in with two out custom because Explorers have the IRS. I was thinking a dual system on the 2005 GC would be easier because of the solid axle. I had a CAI and duals on the 3005 Explorer limited and it worked out awesome. I love the GC more for many reasons and just want the same setup on my GC with perhaps a tune this time. The Explorer had no tune and I recall the intake and exhaust improved performance quite a bit. I would assume better results because this rig is a Hemi.
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Old 05-26-2016, 10:53 AM
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Re: 5.7L Hemi - DIY Exhausts?

oops 2005 not 3005 we aren't there yet! We probably will use teleports by then if we are still around, LOL.
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Old 06-10-2016, 12:18 AM
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Re: 5.7L Hemi - DIY Exhausts?

To start off, I agree that I have never heard such a quiet V8 before. Especially from a 5.7 Hemi. I am in a similar boat in trying to find the right setup for my 2012 GC Altitude 5.7. My biggest issue I have been dabbling with is because I bought the vehicle use with 39,000 on it, I opted for the "Extended Warranty" aka Service Contract. I know some people are against the contracts but how I drive it; it was needed.

So what I am asking is if anyone has had any issues with warranty or extended warranties when upgrading to an aftermarket exhaust. I very badly want to hear that 5.7, but not at the cost of the "suits" voiding my contract.

Thank-
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