The Next Anti-Trumpet Experiment
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<div class='quotetop'>QUOTE(don_w @ February 10, 2006, 11:09 AM) Quoted post</div><div class='quotemain'>
It didn't help mine. [img]style_emoticons/<#EMO_DIR#>/nonono.gif[/img]
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darn....well, I know that the stock mufflers with the o/r h-pipe sounds really good. I might have to stay with this setup for awhile till someone comes up with a solution to the trumpets.
It didn't help mine. [img]style_emoticons/<#EMO_DIR#>/nonono.gif[/img]
[/b][/quote]
darn....well, I know that the stock mufflers with the o/r h-pipe sounds really good. I might have to stay with this setup for awhile till someone comes up with a solution to the trumpets.
<div class='quotetop'>QUOTE(holeshot @ February 10, 2006, 9:33 AM) Quoted post</div><div class='quotemain'>
darn....well, I know that the stock mufflers with the o/r h-pipe sounds really good. I might have to stay with this setup for awhile till someone comes up with a solution to the trumpets.
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The Magnaflows work well negating the trumpets, and are louder than stock. But, I'm still wanting something a little louder. Hopefully, I'll be able to report back on Bassanis in the next week or two.
darn....well, I know that the stock mufflers with the o/r h-pipe sounds really good. I might have to stay with this setup for awhile till someone comes up with a solution to the trumpets.
[/b][/quote]
The Magnaflows work well negating the trumpets, and are louder than stock. But, I'm still wanting something a little louder. Hopefully, I'll be able to report back on Bassanis in the next week or two.
Well, during normal driving I usually shift between 2000-2300 rpm... Or every 10 mph from a stop. I would think 4.10s would promote going into that rpm range...
If you have 3.55s shift at or under 16, 27, 40, and 55mph
If you have 4.10s shift at or under 14, 23, 35, and 45mph
If you're just "winding her out" without going near WOT you're just creating extra unused HP and buring extra fuel. If you're going past the trumpet and shifting INTO it, go about 3-5mph above those numbers above. [i.e. 3.55s at 30, 45, 60, then shifting to 5th won't put you in that range until 82mph... for 4.10s: 28, 40, 50 should be fine up to 70mph]
Automatics are a little different, but those shift by themself... So I'm not real sure how you can 'trick' it into shifting away from those numbers. [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img]
If you have 3.55s shift at or under 16, 27, 40, and 55mph
If you have 4.10s shift at or under 14, 23, 35, and 45mph
If you're just "winding her out" without going near WOT you're just creating extra unused HP and buring extra fuel. If you're going past the trumpet and shifting INTO it, go about 3-5mph above those numbers above. [i.e. 3.55s at 30, 45, 60, then shifting to 5th won't put you in that range until 82mph... for 4.10s: 28, 40, 50 should be fine up to 70mph]
Automatics are a little different, but those shift by themself... So I'm not real sure how you can 'trick' it into shifting away from those numbers. [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img]
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from what i've heard, chambered mufflers help with the trumpet. right now i have the borla type s and just put on the stock mufflers for kicks. i love the sound of my borlas but with the headers and all, it doesnt sound as good nomore. yes its loud and all but still have some trumpet in them. just remembered that borla has a cha,mber type muffler for the 05 which im interested in. how much louder are the type s compared to the chamber ones?
chamber borlas
chamber borlas
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<div class='quotetop'>QUOTE(chevy_slayer @ February 16, 2006, 1:40 AM) Quoted post</div><div class='quotemain'>
from what i've heard, chambered mufflers help with the trumpet. right now i have the borla type s and just put on the stock mufflers for kicks. i love the sound of my borlas but with the headers and all, it doesnt sound as good nomore. yes its loud and all but still have some trumpet in them. just remembered that borla has a cha,mber type muffler for the 05 which im interested in. how much louder are the type s compared to the chamber ones?
chamber borlas
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Flowmasters are chambered mufflers as well, and they trumpet.
Dont get me wrong....the Flowmasters sound AWESOME with the stock midpipe. But when you go to any off road (no cats) setup.....that is when you hear the trumpets.
from what i've heard, chambered mufflers help with the trumpet. right now i have the borla type s and just put on the stock mufflers for kicks. i love the sound of my borlas but with the headers and all, it doesnt sound as good nomore. yes its loud and all but still have some trumpet in them. just remembered that borla has a cha,mber type muffler for the 05 which im interested in. how much louder are the type s compared to the chamber ones?
chamber borlas
[/b][/quote]
Flowmasters are chambered mufflers as well, and they trumpet.
Dont get me wrong....the Flowmasters sound AWESOME with the stock midpipe. But when you go to any off road (no cats) setup.....that is when you hear the trumpets.
The Bassani's arrived at my house yesterday. If I have time, I'll put them on tonight to test them out. If not, it will be Sunday (I'm going to be at the track Friday night and all day Saturday).
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From: Surrey, BC
<div class='quotetop'>QUOTE(holeshot @ February 16, 2006, 4:31 AM) Quoted post</div><div class='quotemain'>
But when you go to any off road (no cats) setup.....that is when you hear the trumpets.
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I believe Don has the Dynatech catted X pipe and is complaining about trumpets.
But when you go to any off road (no cats) setup.....that is when you hear the trumpets.
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I believe Don has the Dynatech catted X pipe and is complaining about trumpets.
<div class='quotetop'>QUOTE(Redfire 05Gt @ February 16, 2006, 8:46 AM) Quoted post</div><div class='quotemain'>
I believe Don has the Dynatech catted X pipe and is complaining about trumpets.
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Yes, I have the hi-flow cats... and I even replaced the X with an H, and I still got the trumpets. From what I've read, it's the removal of the stock cats that seems to be the common denominator.
I believe Don has the Dynatech catted X pipe and is complaining about trumpets.
[/b][/quote]
Yes, I have the hi-flow cats... and I even replaced the X with an H, and I still got the trumpets. From what I've read, it's the removal of the stock cats that seems to be the common denominator.
<div class='quotetop'>QUOTE(NOLAGT @ February 16, 2006, 9:42 AM) Quoted post</div><div class='quotemain'>
Someone should try LT's and a modified stock H with the stock cats and LM's and see what that sounds like. I dont even know if that is possible....or maybe get a o/r X and make the stock cats fit it.
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I have actually thought of doing that, but every time I look at the stock cats (they are laying on my workbench), I wonder whether they are too big to fit under the car with LTs. With stock manifolds or shortys, they tuck up under the firewall area, but with longtube, they would have to go below the car, and may end up being too low or too wide. Also, I noticed that the pipes are attached with an angled weld on the stock cats. To make it work, those would have to be cut off, and straighter pipes welded on to work. Bottom line, I keep thinking it would be more trouble than it's worth.
Someone should try LT's and a modified stock H with the stock cats and LM's and see what that sounds like. I dont even know if that is possible....or maybe get a o/r X and make the stock cats fit it.
[/b][/quote]
I have actually thought of doing that, but every time I look at the stock cats (they are laying on my workbench), I wonder whether they are too big to fit under the car with LTs. With stock manifolds or shortys, they tuck up under the firewall area, but with longtube, they would have to go below the car, and may end up being too low or too wide. Also, I noticed that the pipes are attached with an angled weld on the stock cats. To make it work, those would have to be cut off, and straighter pipes welded on to work. Bottom line, I keep thinking it would be more trouble than it's worth.
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<div class='quotetop'>QUOTE(don_w @ February 16, 2006, 12:44 PM) Quoted post</div><div class='quotemain'>
I keep thinking it would be more trouble than it's worth.
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Yeah that definetly sounds like it would be.
I keep thinking it would be more trouble than it's worth.
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Yeah that definetly sounds like it would be.
OK, I made the switch. I traded my Loudmouths (which were hawgman's originally) for a pair of Bassanis.
I removed the Magnaflows and installed the Bassani's today. At idle, these sound louder and deeper than the Magnaflows (but not anywhere near as loud as the LMs). That's a good thing, because the Magnaflows were too quiet for me. During the test drive, I clearly detected trumpeting in the 2200-2700 rpm range. It was loudest when the engine was cold and, as the engine warmed up, it definitely mellowed out quite a bit. Even though some trumpeting was still present with the engine warm, it is much more tolerable than with the Loudmouths. With the LMs, I just couldn't stand it... I can live with the sound of the Bassanis. And at WOT, the Bassanis sound pretty nice. Overall, I still preferred the sound of the LMs when I was running the stock exhaust system, but these Bassani's will work for me with the exhaust set up I have now.
At least for the time being, the Anti-Trumpet Experiment is done for me (unless I hear something else in person that I prefer).
p.s. Anyone want to buy a set of stainless steel Magnaflows? [img]style_emoticons/<#EMO_DIR#>/icon_mrgreen.gif[/img]
I removed the Magnaflows and installed the Bassani's today. At idle, these sound louder and deeper than the Magnaflows (but not anywhere near as loud as the LMs). That's a good thing, because the Magnaflows were too quiet for me. During the test drive, I clearly detected trumpeting in the 2200-2700 rpm range. It was loudest when the engine was cold and, as the engine warmed up, it definitely mellowed out quite a bit. Even though some trumpeting was still present with the engine warm, it is much more tolerable than with the Loudmouths. With the LMs, I just couldn't stand it... I can live with the sound of the Bassanis. And at WOT, the Bassanis sound pretty nice. Overall, I still preferred the sound of the LMs when I was running the stock exhaust system, but these Bassani's will work for me with the exhaust set up I have now.
At least for the time being, the Anti-Trumpet Experiment is done for me (unless I hear something else in person that I prefer).
p.s. Anyone want to buy a set of stainless steel Magnaflows? [img]style_emoticons/<#EMO_DIR#>/icon_mrgreen.gif[/img]
Update: This morning while I was installing the rear driveshaft loop, I decided to remove the H-pipe, and put the X-pipe back in. And... BINGO!!! We have a winner!! The trumpets seem to be gone!!
I took it for a test drive and intentionally tried to drive in the rpm range where trumpets would always appear. I drove it easy, I drove it hard, I drove it in between... and it sounds good to me everywhere. I'm not sure if it is just the X-pipe that made all of the difference, or the fact that the rear O2 sensor bungs are still open, but whatever it is, I'm liking it. In fact, having the O2 sensor bungs open add a little of the "exhaust leak" raspiness into the equation, and I like that too. It's got a nice low rumble at idle, and an aggressive growl under acceleration, and it flat out screams at WOT.
So, here is a recap of what I did over the past couple months, and the results:
1. Installed LTs, hi-flow cats, X-pipe with Loudmouths - Loud as heck, and unbearable trumpeting.
2. Replaced X with H-pipe - Still loud as heck, with slightly less trumpeting, but still not acceptable.
3. Replaced LMs with Magnaflows - Greatly reduced trumpeting, but not loud enough.
4. Installed KB supercharger and re-installed LMs (hoping for a sound difference) - Back to loud as heck, and unbearable trumpeting.
5. Put Magnaflows back on, and traded LMs for Bassani's.
6. Replaced Magnaflows with Bassani's - Louder than Magnaflows, with just a little trumpeting. Bearable.
7. Replaced H-pipe with X-pipe - A little louder, more aggressive and trumpeting is undetectable.
At this point, I don't intend to do anything else with the exhaust, except probably install some cutouts. When I had the pipes open again this morning, I just had to start the car with open headers again. That just sounds so frikkin sick... the cutouts will let me get that sound when I'm at the track (or when I want to get someone's attention on the street... hehe).
I took it for a test drive and intentionally tried to drive in the rpm range where trumpets would always appear. I drove it easy, I drove it hard, I drove it in between... and it sounds good to me everywhere. I'm not sure if it is just the X-pipe that made all of the difference, or the fact that the rear O2 sensor bungs are still open, but whatever it is, I'm liking it. In fact, having the O2 sensor bungs open add a little of the "exhaust leak" raspiness into the equation, and I like that too. It's got a nice low rumble at idle, and an aggressive growl under acceleration, and it flat out screams at WOT.
So, here is a recap of what I did over the past couple months, and the results:
1. Installed LTs, hi-flow cats, X-pipe with Loudmouths - Loud as heck, and unbearable trumpeting.
2. Replaced X with H-pipe - Still loud as heck, with slightly less trumpeting, but still not acceptable.
3. Replaced LMs with Magnaflows - Greatly reduced trumpeting, but not loud enough.
4. Installed KB supercharger and re-installed LMs (hoping for a sound difference) - Back to loud as heck, and unbearable trumpeting.
5. Put Magnaflows back on, and traded LMs for Bassani's.
6. Replaced Magnaflows with Bassani's - Louder than Magnaflows, with just a little trumpeting. Bearable.
7. Replaced H-pipe with X-pipe - A little louder, more aggressive and trumpeting is undetectable.
At this point, I don't intend to do anything else with the exhaust, except probably install some cutouts. When I had the pipes open again this morning, I just had to start the car with open headers again. That just sounds so frikkin sick... the cutouts will let me get that sound when I'm at the track (or when I want to get someone's attention on the street... hehe).
Thanks, Mark. I may plug the O2 sensor bungs just to see if that makes any difference. Anyone know for sure what that thread size is?
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<div class='quotetop'>QUOTE(don_w @ February 20, 2006, 10:26 AM) Quoted post</div><div class='quotemain'>
Thanks, Mark. I may plug the O2 sensor bungs just to see if that makes any difference. Anyone know for sure what that thread size is?
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I think I remember seeing where someone used an old spark plug as a quickie plug for an O2 sensor hole. Not sure how well it would fit on an 05 though.
Thanks, Mark. I may plug the O2 sensor bungs just to see if that makes any difference. Anyone know for sure what that thread size is?
[/b][/quote]
I think I remember seeing where someone used an old spark plug as a quickie plug for an O2 sensor hole. Not sure how well it would fit on an 05 though.