Vishnu/Harman Motive Catback with Catless DPs?

Biturbo335i · 01-20-2008, 01:50 PM

Hey... it seems like everybody has been having the RASP problem with catless downpipes with aftermarket catbacks... but... it seems like every other exhaust manufacturer uses X-pipes, H-pipes, or some other form of crossover in their catbacks besides the Vishnu/Harman Motive catback. I read something posted telling about how the X-pipes etc only have advantages on NA engines, and I believe that... Now I am curious because I want to know if anybody has tried the Vishnu/Harman Motive catback with a set of catless down pipes. Honestly, i think this would be the best bet at having a great sounding catless exhaust system...

O-cha · 01-20-2008, 01:57 PM

Quote:

Originally Posted by Biturbo335i

Hey... it seems like everybody has been having the RASP problem with catless downpipes with aftermarket catbacks... but... it seems like every other exhaust manufacturer uses X-pipes, H-pipes, or some other form of crossover in their catbacks besides the Vishnu/Harman Motive catback. I read something posted telling about how the X-pipes etc only have advantages on NA engines, and I believe that... Now I am curious because I want to know if anybody has tried the Vishnu/Harman Motive catback with a set of catless down pipes. Honestly, i think this would be the best bet at having a great sounding catless exhaust system...

Your on the dead opposite track. An x pipe will do nothing for performance, but it will act to silence an exhaust a bit. If anything divorced will sound worse.

Biturbo335i · 01-20-2008, 02:01 PM

No man I know what it is used for... Im just saying, havnt heard of anybody doing this yet besides Vishnu themselves, but they havnt posted videos or anything yet... Im looking for a sound with catless DPs that has no rasp like other systems, curious to what this would sound like with no X-pipe.

Malek@MRF · 01-20-2008, 02:21 PM

The point of crossing over pipes is to terminate unwanted exhaust noise.

The X-pipe is less restrictive a H-pipe, but the H configuration will terminate more unwanted exhaust noise.

Separated pipes will yield the most power compared to the other methods, but will also sound the most raspy due to each pipe being on an individual bank.

O-cha · 01-20-2008, 02:23 PM

Quote:

Originally Posted by Biturbo335i

No man I know what it is used for... Im just saying, havnt heard of anybody doing this yet besides Vishnu themselves, but they havnt posted videos or anything yet... Im looking for a sound with catless DPs that has no rasp like other systems, curious to what this would sound like with no X-pipe.

I don't care if you "know what they are for" you said you thought that an exhaust with no X pipe would be less raspy, and I explained to you you were wrong and it was the opposite.

Biturbo335i · 01-20-2008, 02:28 PM

Hahaha alright you dont need to be such a bastard... I am still betting on it sounding better than the rest whenever we get a chance to hear it.

Shiv... have any word on the sound?

O-cha · 01-20-2008, 02:32 PM

Quote:

Originally Posted by Biturbo335i

Hahaha alright you dont need to be such a bastard... I am still betting on it sounding better than the rest whenever we get a chance to hear it.

If you weren't going to take peoples words why did you ask. About being a bastard, well I don't apologize.

e90AW335i · 01-20-2008, 02:37 PM

Quote:

Originally Posted by O-cha

About being a bastard, well I don't apologize.

Biturbo335i · 01-20-2008, 02:48 PM

I never said I wasnt going to take your words... I do... I took them into consideration. But this setup will deffinitely sound different from other systems. We won't know if that is a good or a bad thing until we hear it though...

O-cha · 01-20-2008, 02:51 PM

Quote:

Originally Posted by Biturbo335i

We won't know if that is a good or a bad thing until we hear it though...

No, YOU won't know, WE (those with experience) already know the outcome and it's as I told you, and the other guy bothered to explain (which is more than I could bother to do).

Biturbo335i · 01-20-2008, 03:03 PM

Quote:

Originally Posted by O-cha

No, YOU won't know, WE (those with experience) already know the outcome and it's as I told you, and the other guy bothered to explain (which is more than I could bother to do).

No you are wrong again, you arn't listening to what the I am saying... I am saying that it will sound different than other systems. The rasp alone has alot more to do with the system as a whole and other parts of the system rather than just the X-pipe alone like you are trying to say... And you know nothing about me, period, so don't say anything about my "experience" until you know what the fuck you are talking about. I've had lots of experience with twin turbo vipers and the such... So keep your words to yourself. Like I said... it will be interesting to see how this system sounds. Done.

BoostedBMW · 01-20-2008, 03:18 PM

From what I have heard so far the only exhaust with catless downpipes and no secondary cats that didn't have a horrible rasp to it was the RennArt cat-back. I was pretty shocked when I heard their sound clip of that exhaust with catless downpipes, but that can also be because its a relatively quiet exhaust. With that said, I have also never heard the Vishnu exhaust with catless downpipes and unless you have then you can't say exactly how raspy it will sound.

e90AW335i · 01-20-2008, 03:21 PM

Quote:

Originally Posted by BoostedBMW

With that said, I have also never heard the Vishnu exhaust with catless downpipes and unless you have then you can't say exactly how raspy it will sound.

Maybe shiv could post a sound clip or video....

Biturbo335i · 01-20-2008, 03:21 PM

Quote:

Originally Posted by BoostedBMW

From what I have heard so far the only exhaust with catless downpipes and no secondary cats that didn't have a horrible rasp to it was the RennArt cat-back. I was pretty shocked when I heard their sound clip of that exhaust with catless downpipes, but that can also be because its a relatively quiet exhaust. With that said, I have also never heard the Vishnu exhaust with catless downpipes and unless you have then you can't say exactly how raspy it will sound.

O-cha · 01-20-2008, 03:21 PM

Quote:

Originally Posted by Biturbo335i

Hey... it seems like everybody has been having the RASP problem with catless downpipes with aftermarket catbacks... but... it seems like every other exhaust manufacturer uses X-pipes, H-pipes, or some other form of crossover in their catbacks besides the Vishnu/Harman Motive catback. I read something posted telling about how the X-pipes etc only have advantages on NA engines, and I believe that... Now I am curious because I want to know if anybody has tried the Vishnu/Harman Motive catback with a set of catless down pipes. Honestly, i think this would be the best bet at having a great sounding catless exhaust system...

So basically, in your first post, you explained that you don't really know the function of X pipes, that you just read somewhere they only have advantages to NA engines. Then you go to point out that for some reason you think the Harman exhaust will be the best sounding with catless downpipes, because it has no X pipe. Even though if you had "experience" with twin turbo vipers (washing them?) You would know that the X piped exhaust would have the least raspy sound all other things equal.

So what about "knowing nothing about you" was it again? You spoke volumes about yourself in your first post. Just as you quickly realized I was a bit of a "bastard" anyone who reads your post can quickly realize your "experience".

O-cha · 01-20-2008, 03:23 PM

Quote:

Originally Posted by BoostedBMW

From what I have heard so far the only exhaust with catless downpipes and no secondary cats that didn't have a horrible rasp to it was the RennArt cat-back. I was pretty shocked when I heard their sound clip of that exhaust with catless downpipes, but that can also be because its a relatively quiet exhaust. With that said, I have also never heard the Vishnu exhaust with catless downpipes and unless you have then you can't say exactly how raspy it will sound.

All the clips I have heard so far are with stock downpipes? Where are the clips with the catless? The rennart exhaust is definitely anyones best bet when going catless, the resonated option anyways.

Biturbo335i · 01-20-2008, 03:30 PM

Quote:

Originally Posted by O-cha

So basically, in your first post, you explained that you don't really know the function of X pipes, that you just read somewhere they only have advantages to NA engines. Then you go to point out that for some reason you think the Harman exhaust will be the best sounding with catless downpipes, because it has no X pipe. Even though if you had "experience" with twin turbo vipers (washing them?) You would know that the X piped exhaust would have the least raspy sound all other things equal.

So what about "knowing nothing about you" was it again? You spoke volumes about yourself in your first post. Just as you quickly realized I was a bit of a "bastard" anyone who reads your post can quickly realize your "experience".

Hahahahaha!! My family has a 2004 underground racing SRT-10 twin turbo viper sitting in the fucking garage. No X-pipes on that, each bank is separate, seperate exhaust, turbo, etc... and no rasp on that either... which is why I want to hear the Vishnu with some catless DPs on it you fucking idiot... all you do on these forums is cause problems... And in my first fucking post i didnt say i didnt know what an X-pipe does... its just that on a turbo car... the purpose of the X-pipe would be retarded... there is no scavenging to be had or pulse matching. Again... you are an idiot.

e90AW335i · 01-20-2008, 03:32 PM

Quote:

Originally Posted by Biturbo335i

Hahahahaha!! My family has a 2004 underground racing SRT-10 twin turbo viper sitting in the fucking garage. No X-pipes on that, each bank is separate, seperate exhaust, turbo, etc... and no rasp on that either... which is why I want to hear the Vishnu with some catless DPs on it you fucking idiot... all you do on these forums is cause problems... And in my first fucking post i didnt say i didnt know what an X-pipe does... its just that on a turbo car... the purpose of the X-pipe would be retarded... there is no scavenging to be had or pulse matching. Again... you are an idiot.

Hey bro, you keep cusing like that and stuff and the mods will ban you. No problem with arguing but keep in clean....

O-cha · 01-20-2008, 03:35 PM

Quote:

Originally Posted by Biturbo335i

I read something posted telling about how the X-pipes etc only have advantages on NA engines, and I believe that...

That reads to me like YOU don't really know what they are for. In fact there is no other way to read this then what you read is the extent of your knowledge.

Quote:

Originally Posted by O-cha

So basically, in your first post, you explained that you don't really know the function of X pipes, that you just read somewhere they only have advantages to NA engines.

Where did I say anything about it being useful for scavenging a turbo car?

As for the "viper in your garage" (your daddies?), it most likely has big honkin turbos which completely muddle the exhaust note. Ever heard a rear mount dumping directly to atmosphere? Again your comparison of that car to ours speaks volumes. As well as you flying off your rocker.

Quote:

Originally Posted by Biturbo335i

all you do on these forums is cause problems...

Oh and about this, I help out very frequently I usually only help on the things the rest of the forum most likely can't though.

Biturbo335i · 01-20-2008, 03:37 PM

No you just piss me off to no end... in this thread... and most others you respond to on this forum.

O-cha... why don't ya Go-cha to another thread...

OpenFlash · 01-20-2008, 03:38 PM

Quote:

Originally Posted by Biturbo335i

Hahaha alright you dont need to be such a bastard... I am still betting on it sounding better than the rest whenever we get a chance to hear it.

Shiv... have any word on the sound?

I don't find any discernible difference, soundwise, between an x-pipe and divorced pipe. This is because you don't get the same exhaust pulse tuning effect with turbocharged engines as you would with a NA engine. The turbine "chops" up the exhaust pulses before they even enter the exhaust. With no sound difference, all that matters to me is exhaust restriction/power. And that is where my preference of divorced exhausts comes from.

Shiv

Biturbo335i · 01-20-2008, 03:40 PM

Quote:

Originally Posted by shiv@vishnu

I don't find any discernible difference, soundwise, between an x-pipe and divorced pipe. This is because you don't get the same exhaust pulse tuning effect with turbocharged engines as you would with a NA engine. The turbine "chops" up the exhaust pulses before they even enter the exhaust. With no sound difference, all that matters to me is exhaust restriction/power. And that is where my preference of divorced exhausts comes from.

Shiv

Ok thank you Shiv.

Let us know if you are able to get any videos in the future.

01-20-2008, 01:50 PM	#1
Biturbo335i First Lieutenant 19 Rep 358 Posts Drives: AW/Coral E92 335i Coupe Join Date: Dec 2007 Location: Northern NJ iTrader: (3)	Vishnu/Harman Motive Catback with Catless DPs? Hey... it seems like everybody has been having the RASP problem with catless downpipes with aftermarket catbacks... but... it seems like every other exhaust manufacturer uses X-pipes, H-pipes, or some other form of crossover in their catbacks besides the Vishnu/Harman Motive catback. I read something posted telling about how the X-pipes etc only have advantages on NA engines, and I believe that... Now I am curious because I want to know if anybody has tried the Vishnu/Harman Motive catback with a set of catless down pipes. Honestly, i think this would be the best bet at having a great sounding catless exhaust system... __________________ 2007 E92 335i - Alpine White, Coral, 6 Speed MT, Premium, Sport, Painted Reflectors, GT thunder Angel Eyes, M-Tec Fogs, Cyba CF Kidney Grills, Black OEM Lower Mesh, OEM Aero-Lip, 19" Staggered Matte Black VMR CSL Reps, General Exclaims - 235 Front and 265 Rear, Black Window Trim, BMS Dual Filter Intake, Britalman Catback Exhaust, CF Mirrors, CF M3 trunk lip, 5% Tint, Lamin-X Tinted Tails, Split Second Turbo Tuner.
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01-20-2008, 02:01 PM	#3
Biturbo335i First Lieutenant 19 Rep 358 Posts Drives: AW/Coral E92 335i Coupe Join Date: Dec 2007 Location: Northern NJ iTrader: (3)	No man I know what it is used for... Im just saying, havnt heard of anybody doing this yet besides Vishnu themselves, but they havnt posted videos or anything yet... Im looking for a sound with catless DPs that has no rasp like other systems, curious to what this would sound like with no X-pipe. __________________ 2007 E92 335i - Alpine White, Coral, 6 Speed MT, Premium, Sport, Painted Reflectors, GT thunder Angel Eyes, M-Tec Fogs, Cyba CF Kidney Grills, Black OEM Lower Mesh, OEM Aero-Lip, 19" Staggered Matte Black VMR CSL Reps, General Exclaims - 235 Front and 265 Rear, Black Window Trim, BMS Dual Filter Intake, Britalman Catback Exhaust, CF Mirrors, CF M3 trunk lip, 5% Tint, Lamin-X Tinted Tails, Split Second Turbo Tuner.
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01-20-2008, 02:21 PM	#4
Malek@MRF Brigadier General 731 Rep 3,735 Posts Drives: E92 M3, E46 M3, G82 M4 Join Date: Jan 2008 Location: Irvine, California iTrader: (5)	The point of crossing over pipes is to terminate unwanted exhaust noise. The X-pipe is less restrictive a H-pipe, but the H configuration will terminate more unwanted exhaust noise. Separated pipes will yield the most power compared to the other methods, but will also sound the most raspy due to each pipe being on an individual bank. __________________ BMW PERFORMANCE SPECIALISTS. Race Engines. Suspension. F/I. Brakes. Race Preparation. Factory Service. Alignments. OFFICIAL PARTNERS: KW. MOTON. Brembo. AP Racing. BBS Motorsport. iND. HRE. Turner Motorsport. VAC. BMW Motorsport. Facebook \| Instagram \| Yelp! \| Flikr Phone: 949-233-0448 \| E-Mail: info@mrfengineering.com
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01-20-2008, 02:28 PM	#6
Biturbo335i First Lieutenant 19 Rep 358 Posts Drives: AW/Coral E92 335i Coupe Join Date: Dec 2007 Location: Northern NJ iTrader: (3)	Hahaha alright you dont need to be such a bastard... I am still betting on it sounding better than the rest whenever we get a chance to hear it. Shiv... have any word on the sound? __________________ 2007 E92 335i - Alpine White, Coral, 6 Speed MT, Premium, Sport, Painted Reflectors, GT thunder Angel Eyes, M-Tec Fogs, Cyba CF Kidney Grills, Black OEM Lower Mesh, OEM Aero-Lip, 19" Staggered Matte Black VMR CSL Reps, General Exclaims - 235 Front and 265 Rear, Black Window Trim, BMS Dual Filter Intake, Britalman Catback Exhaust, CF Mirrors, CF M3 trunk lip, 5% Tint, Lamin-X Tinted Tails, Split Second Turbo Tuner.
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01-20-2008, 02:48 PM	#9
Biturbo335i First Lieutenant 19 Rep 358 Posts Drives: AW/Coral E92 335i Coupe Join Date: Dec 2007 Location: Northern NJ iTrader: (3)	I never said I wasnt going to take your words... I do... I took them into consideration. But this setup will deffinitely sound different from other systems. We won't know if that is a good or a bad thing until we hear it though... __________________ 2007 E92 335i - Alpine White, Coral, 6 Speed MT, Premium, Sport, Painted Reflectors, GT thunder Angel Eyes, M-Tec Fogs, Cyba CF Kidney Grills, Black OEM Lower Mesh, OEM Aero-Lip, 19" Staggered Matte Black VMR CSL Reps, General Exclaims - 235 Front and 265 Rear, Black Window Trim, BMS Dual Filter Intake, Britalman Catback Exhaust, CF Mirrors, CF M3 trunk lip, 5% Tint, Lamin-X Tinted Tails, Split Second Turbo Tuner.
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01-20-2008, 03:18 PM	#12
BoostedBMW Moderator 133 Rep 6,775 Posts Drives: TiAg E92 335 Join Date: Oct 2006 Location: Raleigh, NC iTrader: (14) Garage List 2003 S2000 [0.00]	From what I have heard so far the only exhaust with catless downpipes and no secondary cats that didn't have a horrible rasp to it was the RennArt cat-back. I was pretty shocked when I heard their sound clip of that exhaust with catless downpipes, but that can also be because its a relatively quiet exhaust. With that said, I have also never heard the Vishnu exhaust with catless downpipes and unless you have then you can't say exactly how raspy it will sound. __________________ -Michael. Berlina Black S2000 CR is now in the garage l 19" Rial Daytona Race l KW V2 l Eisenhaus Race Exhaust l
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01-20-2008, 03:37 PM	#20
Biturbo335i First Lieutenant 19 Rep 358 Posts Drives: AW/Coral E92 335i Coupe Join Date: Dec 2007 Location: Northern NJ iTrader: (3)	No you just piss me off to no end... in this thread... and most others you respond to on this forum. O-cha... why don't ya Go-cha to another thread... __________________ 2007 E92 335i - Alpine White, Coral, 6 Speed MT, Premium, Sport, Painted Reflectors, GT thunder Angel Eyes, M-Tec Fogs, Cyba CF Kidney Grills, Black OEM Lower Mesh, OEM Aero-Lip, 19" Staggered Matte Black VMR CSL Reps, General Exclaims - 235 Front and 265 Rear, Black Window Trim, BMS Dual Filter Intake, Britalman Catback Exhaust, CF Mirrors, CF M3 trunk lip, 5% Tint, Lamin-X Tinted Tails, Split Second Turbo Tuner.
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