AeroTurbine in and sounding GREAT!

[DLeno]

thats a GREAT reason, but maybe a different tip would do the trick or is it even worth keeping the stock muff-back pipe?

 

[ntenna]

Originally posted by DLeno

thats a GREAT reason, but maybe a different tip would do the trick or is it even worth keeping the stock muff-back pipe?

Or do like I did, turn it down a bit while changing the muffler. Looks fine (to me), no soot.



Jh

 

[Fireman]

Towing observations

I did not see a great decrease in max EGT maybe 25 deg. BUT the EGT rose much slower than before. I was pleased with this as my EGT never exceeded 1,000 deg



The noise on the interstate wasn't much of an issue. Most of the time it was like stock, while on the hills it increased slightly, but it really wasn't too bad (not like I expected). Going through small towns was another story. in order to get the load moving and up to speed ( 20,000# gross combined) it roared and barked and in general was unpleasant. I'm sure the townsfolk would have agreed.



I'll be calling Dave next week when I get home to see what we can do to tone it down a bit.



Fireman

 

[Fireman]

Towing observations

I did not see a great decrease in max EGT maybe 25 deg. BUT the EGT rose much slower than before. I was pleased with this as my EGT never exceeded 1,000 deg



The noise on the interstate wasn't much of an issue. Most of the time it was like stock, while on the hills it increased slightly, but it really wasn't too bad (not like I expected). Going through small towns was another story. in order to get the load moving and up to speed ( 20,000# gross combined) it roared and barked and in general was unpleasant. I'm sure the townsfolk would have agreed.



I'll be calling Dave next week when I get home to see what we can do to tone it down a bit.



Fireman

 

[ntenna]

Call me crazy, but I'm going to try a second one up closer to the headpipe to tone down that bottom end bark. We'll see... ...



Jh

 

[Car_nut57]

Re: Towing observations

Originally posted by Fireman

I did not see a great decrease in max EGT maybe 25 deg. BUT the EGT rose much slower than before. I was pleased with this as my EGT never exceeded 1,000 deg



The noise on the interstate wasn't much of an issue. Most of the time it was like stock, while on the hills it increased slightly, but it really wasn't too bad (not like I expected). Going through small towns was another story. in order to get the load moving and up to speed ( 20,000# gross combined) it roared and barked and in general was unpleasant. I'm sure the townsfolk would have agreed.



I'll be calling Dave next week when I get home to see what we can do to tone it down a bit.



Fireman

A couple of guys have installed louvered straight through mufflers to reduce the bark and we have one gentleman who is going to try a second Aeroturbine. I hope he will give us some feed back on how it works on his truck. We did two Aeroturbines on my wife's Excursion diesel and it works very well, but its not anything like a Cummins. The other thing that some of the guys swear by, but I can't tell the difference is the addition of a resonator tip.

 

[RDietze]

alright ntenna, as you requested (as my arm is being twisted)... ... you are crazy! at $195 a pop (per aeroturbine muffler) i have a very diffacult time conceiving buying ONE of them. when Dave at DPP drops the price another hundred bucks, i will consider it. buy a donaldson 4" straight-through muffler for fifty bucks and all of your problems will be solved.

my $. 02

fact: engineering concepts don't support the claims of the aeroturbine

2 more sense (cents)

 

[ntenna]

Well, Dave, I'll have to leave that one up to you

 

[Car_nut57]

Second Aeroturbine

RDietze,



The Aeroturbine is a different animal than a straight through muffler and costs a little more. The Aeroturbine is also SS which if you compare it to a SS muffler the Aeroturbine is very competitive. Also adding a second Aeroturbine helps to lower EGTs even more than one by itself which a straight through muffler cannot do. With that in mind the Aeroturbine seems pretty reasonably priced.

 

[RDietze]

WHERE'S THE BEEF? (proof)

ntenna

good on you! as i was fun'n w/you



carnut: ok, the shell is SS, but what are the innerds? don't exhaust systems erode from the inside-out unless you live in a heavy salt area?

the muffler does not create a "vacuum" effect like yours and aeroturbines websites state -- now THAT would be a beautiful thing -- i just am a little sensitive when claims are made and the rubber never meets the road - say what you mean, mean what you say

if it's any cancellation, the sound file on sounds cool on your website!

 

[RDietze]

typo

>>

if it's any cancellation, the sound file on sounds cool on your website! <<



like i said, say what you mean, mean what you say Oo.



ha!

 

[Brett Maverick]

Aeroturbine Ram Air????

If the Aeroturbine really does increase the air velocity due to a

jet-engine effect, why not feed cool air to the turbo through one?



It might make a great air inlet as well as a good exhaust outlet.....



Brett

 

[Car_nut57]

The problem with any sound file, it is almost impossible to record the sound of the exhaust under loaded conditions. Our sound file was done standing behind the shop with the truck in nuetral, no load at all. The innerds are also SS.

 

[DLeno]

Originally posted by RDietze

fact: engineering concepts don't support the claims of the aeroturbine

finally, a challenge to all the technobabble. when a western-US based company resorts to British word varients (at best), invents new, undefined words (at worst), or uses another company's registered trademark, you gotta wonder.



not one bit of useful performance information on the web site that cannot be claimed by other muffler mfgs.



What we need here is a real comparison with other 4" mufflers in the same pipe on the same truck.

 

[Car_nut57]

DLeno,



I don't know what you are talking about with the Trade Marks, so I cannot respond to that.



I will be the first to tell you that a 4" exhaust with 4" muffler performance will be almost identical to the same system with Aeroturbine. The advantage of the Aeroturbine is sound and lowered EGTs.

 

[RDietze]

how much diff from the aero and straight pipe? in you UN-biased opinion



like i said, i would try one for 97 dollars and 50 cents

 

[RDietze]

>>like i said, i would try one for 97 dollars and 50 cents <<



that way, if i liked it, i could say good things about it on TDR Oo.

 

[DLeno]

Originally posted by Car_nut57

DLeno,

I don't know what you are talking about with the Trade Marks, so I cannot respond to that.

http://www.aeroturbine.com/index0.htm

I will be the first to tell you that a 4" exhaust with 4" muffler performance will be almost identical to the same system with Aeroturbine.

and by "performance" I assume you mean EGTs. Thats arguably the most important real performance reason bombers change exhaust.

The advantage of the Aeroturbine is sound and lowered EGTs.

every muffler has a characteristic sound that you either like or not. Sound aside, you are saying that in two otherwise identical pipes, the Aeroturbine will perform better than any other muffler in the EGT department? I'm not trying to be rhetorical, I'm just out for verifiable facts. And the more technobabble I see on the marketing end of things, the more verifiable facts I have to see in order to have confidence that a product actually performs. show me the theory, not the technobabble. show me real experiements, not testimonials or anectotal stories.

 

[Car_nut57]

DLeno,



I sent you a private message in which I shared my own experience with the Aeroturbine. I am not going to tell you how much your EGTs would be lower with an Aeroturbine because of so many variables. You'll just have to try one for yourself and document your experiment and I am sure some one will doubt your information as well.



As for the Trade Mark, that one is different than the one supplied to us by Aeroturbine and as far as I know, no dispute exists regarding the Trade Mark.

 

[DLeno]

yea I wasn't implying that anything illegal was going on. it just gives me "pause" shall we say, because of the extraordinary amount of customer-facing information (company name, claims, website, everything) that is worthless for the purpose of understanding the product's actual capabilities. While I dislike this approch, due to the void of all uselful information, I am just as interested in seeing valid experimental results. After all, I'd like an extraordinary reduction in EGTs as well.



Unfortunately, when you peel back the onion, in most cases (this one included FOR NOW), the promise of good information fades into the anecdotal, the unverifiable, and so on. So I remain both keenly interested and keenly skeptical.



While I genuinely appreciate your approach and caution (try for yourself) becasue you are a distributor, I still think it is completely bogus -- absolutely and completely bogus, after this amount of time, that NO verifyable results are available and that NO ONE has even the slightest bit of data good showing a realizable performance benefit (other than sound) of the Aeroturbine when compared to other choices. Again, I'm on the edge of my seat -- I really would pay for one IF it can be shown that it really performs better. I'd like an extra hundred degrees too! But, as I say, the volume of bogus and useless information and marketing drivel on the website just makes it even more difficult for discriminating and detail-oriented individuals to make a factually-based decision.