Few clips here.. honest opinions please...

The first three are lower quality until we figured out how to change it...
http://www.youtube.com/watch?v=VtcSFZJzC5E
http://www.youtube.com/watch?v=D-XYoVGJ9aw
http://www.youtube.com/watch?v=MQY6h3avESw

http://www.youtube.com/watch?v=pZgqHTbTtYc
http://www.youtube.com/watch?v=Pyd2qObieos

very very nice. I like it a lot. What exactly did you do to the exhaust? Magnaflows?

Now, that sounds sweeeeet.

What's the setup?

Yea Dovi, it sounds pretty darn good. I think the best out of all the "aftermarket" exhausts done so far.

What is the set up???

What is the set up???
Dovi, don't make us come over there! :D

It's a full catback. I guess it would be considered custom since it isn't a name brand like Bassani or such.. Flowmaster mufflers i think the new Super 44, will need to double check that.

I do have a drone in the car though unfortunately but i am bringing it back in tomorrow to see what they can do about that. I dont want to put any of the resonators back on though so they are recommending an X pipe... what do our local professionals think of that to get rid of the droning?

get rid of drone = get rid of the flowmasters

The exhaust sounds really really good. Flowmaster has a great sound. Unfortunately every vehicle I have owned they have been a terrible muffler for performance. If you are going for just sound then they will be just fine. Nearly every flowmaster I've heard has pretty bad drone. Hopefully someone can help you figure out how to get it to a more manageable level. Not everyone has the same sensitivity to drone. So cross your fingers you that you aren't one of the unlucky few who are extremely sensitive to it.

When we first got it back there was very little drone at all but they had left the tips sticking out too far, like almost two inches. We took it back to get them shortened but instead of just moving the tips, they cut in front of the mufflers and slid them forward. After that the drone is nearly unbearable at cruising speed when the RPM's are between 1200 - 1800.

If you have pictures from underneath the vehicle (so I can see what was done) I might be able to help you.

Who did the work? I see you're in the San Diego area.

It sounds great. Sounds like a V8 should sound from the factory.

no offense or anything, but I think it sounds a little like a truck exhaust, but it could just be the camera and prob sounds amazing in person.

I don't have an pics but can go out and try and get some. I looked underneath and everything looks well done, solid supports and good welds from what i could see.

I took it to Tag Motorsports in Escondido, but they outsourced the exhaust work to Warner's muffler shop in Oceanside.

When we first got it back there was very little drone at all but they had left the tips sticking out too far, like almost two inches. We took it back to get them shortened but instead of just moving the tips, they cut in front of the mufflers and slid them forward. After that the drone is nearly unbearable at cruising speed when the RPM's are between 1200 - 1800.

Ah.
The Dreaded Drone.
This has been an issue with C6 Corvette.
Particularly with the 6L80 automatic trans – as in my car.
I had Flowmasters installed on my car.
The drone nearly drove me [ more ] nuts.
I decided to have a Corsa H pipe – with dual resonators installed.
( There are no resonators in the stock C6 config. )
( And I find the complete Corsa system too high pitched for my taste. )
It is still quite noticeably louder than stock – but the drone from 70 MPH on up fades almost completely away.
And the distinct heterodyne beat of the V8 is now apparent.
The stock C6 system is very quiet indeed . . .
Thanks for the update.
How do you plan to ‘attack’ the drone?
Did you replace the big 2 in \ 2 out resonator?
I don’t recall what you did . . .
Thanks,
- Ray
( relatively ) drone free . . .

When we first got it back there was very little drone at all but they had left the tips sticking out too far, like almost two inches. We took it back to get them shortened but instead of just moving the tips, they cut in front of the mufflers and slid them forward. After that the drone is nearly unbearable at cruising speed when the RPM's are between 1200 - 1800.
I had exactly the same issue with Flowmasters on a 1989 Mustang GT - there was a horrible drone at 2200 rpm +/- 200, and although the exhaust sound was sweet the drone was very imposing.

I don't have an pics but can go out and try and get some. I looked underneath and everything looks well done, solid supports and good welds from what i could see.

I took it to Tag Motorsports in Escondido, but they outsourced the exhaust work to Warner's muffler shop in Oceanside.

I can almost guarantee you it has zero to do with the work of the exhaust shop. You problem is the flowmaster mufflers. You may want to go get some magnaflow mufflers to replace them with. They won't have near the drone that flowmaster does. You may still hear some depending on how sensitive you are to it. But, if you were to swap the for some magnaflows you won't have the same flowmaster sound. They will give you better performance over the flowmasters though.

Very nice man! It's a bit too aggressive of a sound for my taste but I love the rumble at idle.

I went with sum cheapie flows..and actually have very very little drone .....i didnt even go with the newer anti drone ones....i think the rest of the car is insulated well

I'll have to admit I really like that. Glad you stayed with the stock tips. I'll most likely still go with Magnaflow because of the drone issue though. Your's sounds good from the outside.

Sandog, here are some underneath shots, best i could do without a lift... It goes in tomorrow at 9am, they suggest an X pipe to "move" the drone. What would you (or anyone else that knows exhaust) suggest?
http://i278.photobucket.com/albums/kk112/DoviG8/03-30-08086.jpg
http://i278.photobucket.com/albums/kk112/DoviG8/03-30-08087.jpg
http://i278.photobucket.com/albums/kk112/DoviG8/03-30-08088.jpg
http://i278.photobucket.com/albums/kk112/DoviG8/03-30-08085.jpg
http://i278.photobucket.com/albums/kk112/DoviG8/03-30-08089.jpg
http://i278.photobucket.com/albums/kk112/DoviG8/03-30-08090.jpg
http://i278.photobucket.com/albums/kk112/DoviG8/03-30-08084.jpg

sounds good but sorry about the drone issues.

personally i dont think the x-pipe will make the drone go away but it will help...

But im positive that it will make it sound a lot better ( not that it doesnt sound good now)

When you get flowmasters no matter what you do will have drone unless you have resonators... and then at that you'll still have a lil drone...

True duals FTL.....

With chambered mufflers (Flowmaster, Spintech, Mac Flowpath, Flo-Pro, etc..) having a crossover in the system such as an H-pipe or and X-pipe is very important for reducing the drone. The proper placement is determined by using a heat marking pen on the pipes and where it burns of is the area of highest heat and exhaust energy. Thats where the crossover belongs in the area where heat and velocity are highest.

Put in the crossover and then form your opinions. Still too loud? Install some bullet resonators. FYI: the Super 44 is one of the most aggressive Flowmasters in the Delta Flow line. It has the guts of a super 40 in a 4" instead of 5" case. Sounds much closer to the original 40's than the new Delta Flows.

On LS1/2's in the GTO's weve found that the muffler placement has a huge impact on the drone as well. Many have installed Spintech's in the 04 location (under the car in front of the diff) and its a huge reduction in drone over the 05-06 location which is at the rear like the G8.

An old hot rodders trick is to use two different type's of mufflers as they resonate at different frequencies thus reducing drone. I.E. use one Super 44 and one Delta Flow 40.

S.F.

hey S.F. where can i pick up one of those "heat marking pens"

cause wannna install an h-pipe on my 69 nova...

thanks

hey S.F. where can i pick up one of those "heat marking pens"

cause wannna install an h-pipe on my 69 nova...

thanks

Check with your local welding suppliers. They have paint crayons / heat pens that will change colors to signify the heat they are subject to. Ive also just heard of plain old paint pens used and you get the system just hot enough to begin burning the paint and then you know where to position. If you use a plain paint pen you've got to be carefull because it wont take much heat to obliterate the entire mark.

S.F.

To the original poster: What are you doing with the stock mufflers that were removed?

Wow, no x-pipe or h-pipe at all? Oh boy. :nonono:

The first thing I would do is put in a Magnaflow dual-in/dual-out, which is a straight-through muffler with a built-in X-pipe. Put it as close to the motor as you can.

Something like this is what I'm talking about:

http://www.magnaflow.com/02product/parts/12568.jpg

This is a 5"x11" case, but they also have 4"x9" and 5"x8" cases. Look here (http://www.magnaflow.com/02product/universalsatins.asp?shape=Oval) to see what I mean.

If that doesn't take care of the drone, then I would cut out a section of pipe on each side and add a couple of these in-line:

http://www.magnaflow.com/02product/parts/10436.jpg

Of course you have a few to choose from, depending on piping size, desired muffling, etc. - look here (http://www.magnaflow.com/02product/universalsatinr.asp?shape=round) to find what you need.

Good luck.

It's a full catback. I guess it would be considered custom since it isn't a name brand like Bassani or such.. Flowmaster mufflers i think the new Super 44, will need to double check that.

I do have a drone in the car though unfortunately but i am bringing it back in tomorrow to see what they can do about that. I dont want to put any of the resonators back on though so they are recommending an X pipe... what do our local professionals think of that to get rid of the droning?
Drive it up to Seattle and I will do the "World Famous" $60.00 exhaust mod for just $1.380. NO DRONE guaranteed!

True duals FTL.....

With chambered mufflers (Flowmaster, Spintech, Mac Flowpath, Flo-Pro, etc..) having a crossover in the system such as an H-pipe or and X-pipe is very important for reducing the drone. The proper placement is determined by using a heat marking pen on the pipes and where it burns of is the area of highest heat and exhaust energy. Thats where the crossover belongs in the area where heat and velocity are highest.

Put in the crossover and then form your opinions. Still too loud? Install some bullet resonators. FYI: the Super 44 is one of the most aggressive Flowmasters in the Delta Flow line. It has the guts of a super 40 in a 4" instead of 5" case. Sounds much closer to the original 40's than the new Delta Flows.

On LS1/2's in the GTO's weve found that the muffler placement has a huge impact on the drone as well. Many have installed Spintech's in the 04 location (under the car in front of the diff) and its a huge reduction in drone over the 05-06 location which is at the rear like the G8.

An old hot rodders trick is to use two different type's of mufflers as they resonate at different frequencies thus reducing drone. I.E. use one Super 44 and one Delta Flow 40.

S.F.

Interesting....didn't read your post until after I put mine up. Great minds and all that...lol.

Few clips here.. honest opinions please...

The first three are lower quality until we figured out how to change it...
http://www.youtube.com/watch?v=VtcSFZJzC5E
http://www.youtube.com/watch?v=D-XYoVGJ9aw
http://www.youtube.com/watch?v=MQY6h3avESw

http://www.youtube.com/watch?v=pZgqHTbTtYc
http://www.youtube.com/watch?v=Pyd2qObieos
Careful Dovi, it's a tough crowd! LOL

Thanks for the input everyone, i am going to bring all of this up with them and see what they come up with. I will post later today when i get it back.

My 1 1/2 year old niece and I love it! Unfortunately my girlfriend does not. Oh wait! She doesn't drive this car!!! I love it. I want it!!

Few clips here.. honest opinions please...

The first three are lower quality until we figured out how to change it...
http://www.youtube.com/watch?v=VtcSFZJzC5E
http://www.youtube.com/watch?v=D-XYoVGJ9aw
http://www.youtube.com/watch?v=MQY6h3avESw

http://www.youtube.com/watch?v=pZgqHTbTtYc
http://www.youtube.com/watch?v=Pyd2qObieos

Honestly (and you did ask), I don't like it. Sounds like a diesel powered pickup truck with an aftermarket exhaust, especially coming off a rev while stationary.

Thank you for sharing though!

I also agree with what Mr. Sanddog said - placement of the mufflers is so important. That's why the latest mustang GTs are having some trouble getting that typical chunky, deep chambered muffler sound that was so easy to get with the 5.0 liter mustangs and even the last two gen stangs with the 4.6L V8s. The new mustangs have the mufflers way in the back of the car (just like the G8) with the tips coming right off the muffler. It's tougher to get a deep yet pleasant tone out of that design, but I'm hoping Corsa or Magnaflow comes out with something that will allow us to wake the car up a little. It's just WAY too quiet!!!

It sounds pretty good, if they can relocate the mufflers (mid car) it may remove the drone.

Update... Here are some clips after adding the X-Pipe. The drone moved further to the back of the car but is still there.

http://www.youtube.com/watch?v=vcg_ICxim8E
http://www.youtube.com/watch?v=CcwwWUMEdD0
http://www.youtube.com/watch?v=dGEuQzQZwXo
http://www.youtube.com/watch?v=EiEU4CNWaSM

I think it is too quiet now...

That is 1,000 times better imo.

That is 1,000 times better imo.
Heck yeah I can agree to that! Now that's how the G8GT should sound like coming fresh out of the factory. Some might consider it too quiet but that's about exactly the same sound I'm looking for. I like it!

Update... Here are some clips after adding the X-Pipe. The drone moved further to the back of the car but is still there.

http://www.youtube.com/watch?v=vcg_ICxim8E
http://www.youtube.com/watch?v=CcwwWUMEdD0
http://www.youtube.com/watch?v=dGEuQzQZwXo
http://www.youtube.com/watch?v=EiEU4CNWaSM

I think it is too quiet now...

I appreciate you taking the time to record & post these...
X-pipe - but no resonators added?
Thanks,
- Ray

Does sound good, too me...

X-pipe - but no resonators added?

Correct, no resonators.. that looks like it will be the next step. :censored:

I like the "euro trash" sound that the X pipe offers..

Yes please!

That is 1,000 times better imo.

:iagree:

WOW!!! that sounds friggin clean....

where exactly did you put the x-pipe...

oh yea what diameter pipe did you use.....(on the whole exhaust)

thanks

Ok, That sounds great. This car is gonna sound mean with a new exhaust.

I agree, with just the muffs it sounded kind of "dirty". I.E. lot's of popping and un-even sounding...

With the x-pipe it sounds like any V8 should. It's nice and throaty, took away most of the "pop" and isn't overly loud while sounding "clean".

Great job!

Also, would a couple of mild glasspacks have the same effect as a resonator? I know that a lot of GTP guys chose to put a glasspack on their cat-back exhausts that come without the resonator.

:ohsnap1:...

I like the sound much better with the X. I had an H pipe with 40 series flows on my mustang and then I changed out to an X and it made a world of difference. I lost the
2K drone when I switched out the H with X. Sounds good

What's with all the birds? Felt like I was playing Championship Golf on my old Gateway Pentium-100. :)

That sounds SOOOOOOO much better that before. Nice work!

Now I have to go out and find a clip of an H-pipe just so I can hear the difference.

Much better! Very nice! Not too quiet for me.

Update... Here are some clips after adding the X-Pipe. The drone moved further to the back of the car but is still there.

http://www.youtube.com/watch?v=vcg_ICxim8E
http://www.youtube.com/watch?v=CcwwWUMEdD0
http://www.youtube.com/watch?v=dGEuQzQZwXo
http://www.youtube.com/watch?v=EiEU4CNWaSM

I think it is too quiet now...

Much, much better. Definitely good, but wouldn't mind a little deeper tone. Still, if this was as good as it got as far as aftermarket kits, I'd strongly consider it. Well done!

That is 1,000 times better imo.

Double that!:thumbsup:

So we went ahead and put the stock bullet resonators back on but all that did was quiet the whole system down, didnt help the drone inside at all.

Went back this morning and had them swap the flowmasters for magnaflows that SF uses and WOW what a difference! There is almost no drone in the car at all now, what is left of it is easily managed by turning on the radio. Sure wish i would have waited for SF's products from the start!

So now the system is as follows...

Cats--->X-Pipe--->bullet resonators(stock)--->Magnaflow--->Stock tips

I will get some new videos tonight and post them up.

Someone mentioned that the magnaflows get louder over time, any idea how much time?

Should have gone with the Magnaflows like I suggested. :p

Someone mentioned that the magnaflows get louder over time, any idea how much time?

Gradually 30% louder over a period of 2 years or so.

So we went ahead and put the stock bullet resonators back on but all that did was quiet the whole system down, didnt help the drone inside at all.

Went back this morning and had them swap the flowmasters for magnaflows that SF uses and WOW what a difference! There is almost no drone in the car at all now, what is left of it is easily managed by turning on the radio. Sure wish i would have waited for SF's products from the start!

...

Someone mentioned that the magnaflows get louder over time, any idea how much time?

What model \ part # Magnaflows?
Thanks,
- Ray
Glad you have something that works for you!

Should have gone with the Magnaflows like I suggested. :p

I know.. i didnt know much at the time, just took it to them and said make it sound good. It did sound great.. outside.

Gradually 30% louder over a period of 2 years or so.

Yikes.. I was hoping it would only be a few months. I want to play with it some more by taking off the resonators.

What model \ part # Magnaflows?

Magnaflow part number is 12226. I asked SF what he used and told the shop to put them on in place of the Flowmasters.

Magnaflows FTW! ;)

Looking forward to the videos man.

. . .


Yikes.. I was hoping it would only be a few months. I want to play with it some more by taking off the resonators.



Magnaflow part number is 12226. I asked SF what he used and told the shop to put them on in place of the Flowmasters.

Interesting ( to me )...
That is the same part number shown on the receipt for the Magnaflows I had put on my Y2K Lincoln LS V8 - in Fall 1999.

Based on that 1 experience, I'd say the estimate of 30% louder over 2 years is even a but high - I'd say 20% louder over the 3 years I had the Lincoln.

Thanks,
- Ray

Just one more data point...

Dovi, (or anyone else reading this thread w/ catback upgrade),

When the AFM kicks in, is it audibly noticable? This past weekend I put an SLP Loudmouth catback on the wifes Magnum R/T and when the DOD (or whatever they call it) kicks in, it is seriously noticable. Imagine an SRT4, bored and stroked to 2.85L, with no muffs at 1000rpm, and that is what her Maggie sounds like at 2000rpm at 65mph...

I was just wondering if GMs way of doing it was as bad (sonically).

Dovi, (or anyone else reading this thread w/ catback upgrade),

When the AFM kicks in, is it audibly noticable? This past weekend I put an SLP Loudmouth catback on the wifes Magnum R/T and when the DOD (or whatever they call it) kicks in, it is seriously noticable. Imagine an SRT4, bored and stroked to 2.85L, with no muffs at 1000rpm, and that is what her Maggie sounds like at 2000rpm at 65mph...

I was just wondering if GMs way of doing it was as bad (sonically).

"dodson914" and "gbcop" are running my Magnaflow axlebacks and H-pipe and have no reported oddities with sound when DOD kicks in. Pm them for more details....

S.F.

I was telling S.F. yesterday. I have not heard one bit of difference when the DoD kicks in. Now obviously I am not running along side the car when it kicks in but in the cab there is no distinct change in the tone. When cruising around and staying off the gas you can barely hear the exhaust at all inside of the car.

sounds great with that xpipe on there. looking forward to hearing it with the magnaflows now :)

It sounds like it's in a cave!!! Nice!