Best 996 Turbo Exhaust Opinions?
05-21-2015, 10:05 AM
#61
Rennlist Member
My experience with a EP stage 2 loud on a bone stock X50 K24 was that it droned badly in the 2.5k range. Gave me a headache after a 15 minute drive, couldn't wait to get out of it. I can see why Stef no longer makes that version. On the other hand, the EP stage 2 loud on my friends 997.1 has zero drone and sounds fantastic. Seems it has to do with the turbos like Stef says..
05-22-2015, 11:59 AM
#62
Burning Brakes
Worked a treat. Felt odd to be placing some weight into the car that high up but there was no way I could use the car for family runs without it, and even the drive to work was a chore with that nauseating cruising speed drone.
Dynamat works by mass damping, rather than by acoustic isolation, so you only need to concentrate it in the middle of the big resonant firewall and parcel shelf panels rather than trying to swathe the whole area in lots of it to 'block' sound. Think of it as putting a dive weight on the middle of a drum skin to dull out the drum by stopping it resonating, as opposed to smothering it under a duvet.
Less than ten pounds of the stuff was needed, with about 3 tapered layers in the middle of those panels and one over the top to smooth and tidy things. I also put a little bit on the tray that covers the ECU but it probably wasn't needed.
The REMUS always sounded great from the outside (some pit crews wondered if it was naturally aspirated) but needed that bit of help to sound good from the inside.
Dynamat works by mass damping, rather than by acoustic isolation, so you only need to concentrate it in the middle of the big resonant firewall and parcel shelf panels rather than trying to swathe the whole area in lots of it to 'block' sound. Think of it as putting a dive weight on the middle of a drum skin to dull out the drum by stopping it resonating, as opposed to smothering it under a duvet.
Less than ten pounds of the stuff was needed, with about 3 tapered layers in the middle of those panels and one over the top to smooth and tidy things. I also put a little bit on the tray that covers the ECU but it probably wasn't needed.
The REMUS always sounded great from the outside (some pit crews wondered if it was naturally aspirated) but needed that bit of help to sound good from the inside.
07-08-2015, 09:50 AM
#64
Burning Brakes
Thread Starter
Well I installed the Kline exhaust. Cat by-pass avenue.
For what it's worth here my impressions:
1. it's quieter at idle than stock (I know that sounds impossible) I've took db reading before and after. very strange
.....but I regard that as a good thing.
2. its 5-10 db louder in the cabin above 3500 rpm; that's approaching significance IMHO. I hit 94-99 db on full throttle. 82db cruising under 3500 rpm. Any louder and I would not like this system...and I like things loud.
3. no drone, w/o cats that's kinda shocking too.... but much appreciated.
4. the sound is just okay to me, it's an improvement, but nothing revelational.
5. the build quality is outstanding
6. I feel no "butt" hp. I know, I know hp increases with an exhaust change is really really subjective and almost impossible on a virtually stock TT....BUT.....Kline claims 40hp with this...and 40 hp you should feel. Aaaaa..you don't feel anything. I sincerely doubt there is any hp gain here....IMHO
7. "Sam" the Kline sales face is outstanding though. Before money exchange AND after. He truly is first class.
For what it's worth here my impressions:
1. it's quieter at idle than stock (I know that sounds impossible) I've took db reading before and after. very strange
.....but I regard that as a good thing.2. its 5-10 db louder in the cabin above 3500 rpm; that's approaching significance IMHO. I hit 94-99 db on full throttle. 82db cruising under 3500 rpm. Any louder and I would not like this system...and I like things loud.
3. no drone, w/o cats that's kinda shocking too.... but much appreciated.
4. the sound is just okay to me, it's an improvement, but nothing revelational.
5. the build quality is outstanding
6. I feel no "butt" hp. I know, I know hp increases with an exhaust change is really really subjective and almost impossible on a virtually stock TT....BUT.....Kline claims 40hp with this...and 40 hp you should feel. Aaaaa..you don't feel anything. I sincerely doubt there is any hp gain here....IMHO
7. "Sam" the Kline sales face is outstanding though. Before money exchange AND after. He truly is first class.
07-08-2015, 10:20 AM
#65
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6. I feel no "butt" hp. I know, I know hp increases with an exhaust change is really really subjective and almost impossible on a virtually stock TT....BUT.....Kline claims 40hp with this...and 40 hp you should feel. Aaaaa..you don't feel anything. I sincerely doubt there is any hp gain here....IMHO
7. "Sam" the Kline sales face is outstanding though. Before money exchange AND after. He truly is first class.
but i felt it no LESS for that piece of info. i'm very surprised we didn't have a similar experience with virtually the same piece of hardware.
i really appreciated the data on the db levels. that was a great read!..
but our experience with sam is spot on. he is a godsend to me often.
great post!
add: does anyone know if it's even possible for there to be NO gain going from a built exhaust for the 996tt running 200 cell cats to catless? that on its face, seems a specious proposition, but there must be some data from kline?!
07-08-2015, 01:13 PM
#66
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Here is speedtech 3" xpipe ext. Car is a big bore engine with cams, so might sound a little different. First time start up, no driving video yet. Person speaking on video isn't me, just incase if asked.
07-08-2015, 06:03 PM
#69
Well I installed the Kline exhaust. Cat by-pass avenue.
For what it's worth here my impressions:
1. it's quieter at idle than stock (I know that sounds impossible) I've took db reading before and after. very strange.....but I regard that as a good thing.
2. its 5-10 db louder in the cabin above 3500 rpm; that's approaching significance IMHO. I hit 94-99 db on full throttle. 82db cruising under 3500 rpm. Any louder and I would not like this system...and I like things loud.
3. no drone, w/o cats that's kinda shocking too.... but much appreciated.
4. the sound is just okay to me, it's an improvement, but nothing revelational.
5. the build quality is outstanding
6. I feel no "butt" hp. I know, I know hp increases with an exhaust change is really really subjective and almost impossible on a virtually stock TT....BUT.....Kline claims 40hp with this...and 40 hp you should feel. Aaaaa..you don't feel anything. I sincerely doubt there is any hp gain here....IMHO
7. "Sam" the Kline sales face is outstanding though. Before money exchange AND after. He truly is first class.
For what it's worth here my impressions:
1. it's quieter at idle than stock (I know that sounds impossible) I've took db reading before and after. very strange
.....but I regard that as a good thing.2. its 5-10 db louder in the cabin above 3500 rpm; that's approaching significance IMHO. I hit 94-99 db on full throttle. 82db cruising under 3500 rpm. Any louder and I would not like this system...and I like things loud.
3. no drone, w/o cats that's kinda shocking too.... but much appreciated.
4. the sound is just okay to me, it's an improvement, but nothing revelational.
5. the build quality is outstanding
6. I feel no "butt" hp. I know, I know hp increases with an exhaust change is really really subjective and almost impossible on a virtually stock TT....BUT.....Kline claims 40hp with this...and 40 hp you should feel. Aaaaa..you don't feel anything. I sincerely doubt there is any hp gain here....IMHO
7. "Sam" the Kline sales face is outstanding though. Before money exchange AND after. He truly is first class.
Well at least mine did and I'm running 200cell cats, I love the sound I'm getting inside the cabin and I'm (relative conservative) 55 years old. It makes me feel like a kid.
Like Mark, I am also surprised you didn't notice any quicker spooling or more power, I did...well at least the placebo effect increased...lol. I noticed it straight away.
But seriously it will change, mine did after 18 months or so.
07-08-2015, 06:23 PM
#70
Burning Brakes
Thread Starter
It is strange. no spooling change, no perceived increase whatsoever, must be something, well it's not slower if that says anything...ha. I just made my car louder..
But again even the "throatier" sound in itself is an improvement. But 40hp?...aaaah....no. Maybe I did something wrong? Don't think so...pretty elementary...exact fit just as Sam said tho and no bumper removal necessary.
What's interesting is my 993TT appreciated large gains with an exhaust change, night and day, all that you all mentioned, faster spooling, much more instant power.....just from headers, cat delete, and old school RSR mufflers. But the 996TTS?...nuthin.
But again even the "throatier" sound in itself is an improvement. But 40hp?...aaaah....no. Maybe I did something wrong? Don't think so...pretty elementary...exact fit just as Sam said tho and no bumper removal necessary.What's interesting is my 993TT appreciated large gains with an exhaust change, night and day, all that you all mentioned, faster spooling, much more instant power.....just from headers, cat delete, and old school RSR mufflers. But the 996TTS?...nuthin.
07-08-2015, 06:28 PM
#71
It is strange. no spooling change, no perceived increase whatsoever, must be something, well it's not slower if that says anything...ha. I just made my car louder.. But again even the "throatier" sound in itself is an improvement. But 40hp?...aaaah....no. Maybe I did something wrong? Don't think so...pretty elementary...exact fit just as Sam said tho and no bumper removal necessary.
What's interesting is my 993TT appreciated large gains with an exhaust change, night and day, all that you all mentioned, faster spooling, much much more power from headers, cat delete, and old school RSR mufflers. But the 996TTS?...nuthin.
But again even the "throatier" sound in itself is an improvement. But 40hp?...aaaah....no. Maybe I did something wrong? Don't think so...pretty elementary...exact fit just as Sam said tho and no bumper removal necessary.What's interesting is my 993TT appreciated large gains with an exhaust change, night and day, all that you all mentioned, faster spooling, much much more power from headers, cat delete, and old school RSR mufflers. But the 996TTS?...nuthin.
07-08-2015, 06:29 PM
#72
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It is strange. no spooling change, no perceived increase whatsoever, must be something, well it's not slower if that says anything...ha. I just made my car louder.. But again even the "throatier" sound in itself is an improvement. But 40hp?...aaaah....no. Maybe I did something wrong? Don't think so...pretty elementary...exact fit just as Sam said tho and no bumper removal necessary.
What's interesting is my 993TT appreciated large gains with an exhaust change, night and day, all that you all mentioned, faster spooling, much more instant power.....just from headers, cat delete, and old school RSR mufflers. But the 996TTS?...nuthin.
But again even the "throatier" sound in itself is an improvement. But 40hp?...aaaah....no. Maybe I did something wrong? Don't think so...pretty elementary...exact fit just as Sam said tho and no bumper removal necessary.What's interesting is my 993TT appreciated large gains with an exhaust change, night and day, all that you all mentioned, faster spooling, much more instant power.....just from headers, cat delete, and old school RSR mufflers. But the 996TTS?...nuthin.
07-08-2015, 07:23 PM
#73
Burning Brakes
Thread Starter
Certainly no regrets.
I like the sound.
I like the cat-less theory.
I like the build quality.
I like (and am almost shocked) that it really does not drone AT ALL as per "996TTx50" and Sam.
I like that "Sam the salesman" is a man of his word in every respect; he's really an enthusiast.
The only issue I have is the factory claim 40hp is just about the tallest claim I've ever seen with an exhaust on a stock vehicle....that's quite tall claim to live up to...so holding feet to fire a lil there on that.
I have Kevin's flash and it still boosts to 1.0 bar. I don't know what flash this would need but you know I think i will run it by Sam.
I like the sound.
I like the cat-less theory.
I like the build quality.
I like (and am almost shocked) that it really does not drone AT ALL as per "996TTx50" and Sam.
I like that "Sam the salesman" is a man of his word in every respect; he's really an enthusiast.
The only issue I have is the factory claim 40hp is just about the tallest claim I've ever seen with an exhaust on a stock vehicle....that's quite tall claim to live up to...so holding feet to fire a lil there on that.
I have Kevin's flash and it still boosts to 1.0 bar. I don't know what flash this would need but you know I think i will run it by Sam.
07-08-2015, 09:25 PM
#74
yeah, i'd reach out. good call. sounds as if you're well on your way down "the slope"! slide well
