*** VRP X-pipe Holidays Special ***
02-03-2009, 10:14 AM
#27
Member
A quote directly from this very good source...
"Extensive dyno work & highway testing has demonstrated that a simple crossover pipe -interconnecting the two sides of a dual-exhaust system just after the collectors & ahead of the mufflers- can increase engine power.
The power benefits of a cross-over pipe apply to both street & race cars, but the reason for power enhancement differs in each instance.
In an open exhaust race vehicle with a x-over between the collectors, the pipe transfers exhaust shock waves from one side of the system to the other.
With a street system, the x-over pipe performs an additional function: The x-over allows each side of the engine to partially share the combined muffler flow capacity.
Although, even the most effective x-over will not double system flow, improvements of 25% are common.
Crossover systems can be constructed in several different ways. The single, straight crossover is acceptable when muffler flow capacity is exceptionally high, but a double x-over system will increase performance if the mufflers are restrictive or engine output exceeds 350hp.
In simple terms, the more restrictive the mufflers, the more essential the x-over pipe becomes."
02-03-2009, 10:51 AM
#28
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Obsidian E55
A quote directly from this very good source...
"Extensive dyno work & highway testing has demonstrated that a simple crossover pipe -interconnecting the two sides of a dual-exhaust system just after the collectors & ahead of the mufflers- can increase engine power.
The power benefits of a cross-over pipe apply to both street & race cars, but the reason for power enhancement differs in each instance.
In an open exhaust race vehicle with a x-over between the collectors, the pipe transfers exhaust shock waves from one side of the system to the other.
With a street system, the x-over pipe performs an additional function: The x-over allows each side of the engine to partially share the combined muffler flow capacity.
Although, even the most effective x-over will not double system flow, improvements of 25% are common.
Crossover systems can be constructed in several different ways. The single, straight crossover is acceptable when muffler flow capacity is exceptionally high, but a double x-over system will increase performance if the mufflers are restrictive or engine output exceeds 350hp.
In simple terms, the more restrictive the mufflers, the more essential the x-over pipe becomes."
"Extensive dyno work & highway testing has demonstrated that a simple crossover pipe -interconnecting the two sides of a dual-exhaust system just after the collectors & ahead of the mufflers- can increase engine power.
The power benefits of a cross-over pipe apply to both street & race cars, but the reason for power enhancement differs in each instance.
In an open exhaust race vehicle with a x-over between the collectors, the pipe transfers exhaust shock waves from one side of the system to the other.
With a street system, the x-over pipe performs an additional function: The x-over allows each side of the engine to partially share the combined muffler flow capacity.
Although, even the most effective x-over will not double system flow, improvements of 25% are common.
Crossover systems can be constructed in several different ways. The single, straight crossover is acceptable when muffler flow capacity is exceptionally high, but a double x-over system will increase performance if the mufflers are restrictive or engine output exceeds 350hp.
In simple terms, the more restrictive the mufflers, the more essential the x-over pipe becomes."
02-03-2009, 02:16 PM
#29
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S600TT, R350
Not to be a dick or anything, but what's the difference betweent he $65 I spent to get my resonator removed and an X pipe made to replace and this setup
02-03-2009, 06:12 PM
#32
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S600TT, R350
I am working on them.
To truly hear it, one needs a professional quality camera to record it.
I am working on having cars done professionally and to post them on the website.
To truly hear it, one needs a professional quality camera to record it.
I am working on having cars done professionally and to post them on the website.
02-04-2009, 01:33 AM
#33
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4 wheeled car.
A quote directly from this very good source...
"Extensive dyno work & highway testing has demonstrated that a simple crossover pipe -interconnecting the two sides of a dual-exhaust system just after the collectors & ahead of the mufflers- can increase engine power.
The power benefits of a cross-over pipe apply to both street & race cars, but the reason for power enhancement differs in each instance.
In an open exhaust race vehicle with a x-over between the collectors, the pipe transfers exhaust shock waves from one side of the system to the other.
With a street system, the x-over pipe performs an additional function: The x-over allows each side of the engine to partially share the combined muffler flow capacity.
Although, even the most effective x-over will not double system flow, improvements of 25% are common.
Crossover systems can be constructed in several different ways. The single, straight crossover is acceptable when muffler flow capacity is exceptionally high, but a double x-over system will increase performance if the mufflers are restrictive or engine output exceeds 350hp.
In simple terms, the more restrictive the mufflers, the more essential the x-over pipe becomes."
"Extensive dyno work & highway testing has demonstrated that a simple crossover pipe -interconnecting the two sides of a dual-exhaust system just after the collectors & ahead of the mufflers- can increase engine power.
The power benefits of a cross-over pipe apply to both street & race cars, but the reason for power enhancement differs in each instance.
In an open exhaust race vehicle with a x-over between the collectors, the pipe transfers exhaust shock waves from one side of the system to the other.
With a street system, the x-over pipe performs an additional function: The x-over allows each side of the engine to partially share the combined muffler flow capacity.
Although, even the most effective x-over will not double system flow, improvements of 25% are common.
Crossover systems can be constructed in several different ways. The single, straight crossover is acceptable when muffler flow capacity is exceptionally high, but a double x-over system will increase performance if the mufflers are restrictive or engine output exceeds 350hp.
In simple terms, the more restrictive the mufflers, the more essential the x-over pipe becomes."
02-04-2009, 02:16 AM
#34
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CLK 63 Black Series, 2009 S550, 2011 Range Rover Supercharged, BMW F800 GS Anniv Edition
Serious ?? Well, mandrel bending and stainless steel. The VRP x pipe in bending and materials, labor to bend and weld is way over $65. more like $650...although the bends could be replace with a regular cross pipe considering the radius of the x turns....
02-04-2009, 04:42 AM
#36
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4 wheeled car.
03-01-2009, 05:05 AM
#37
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Mercedes,Porsche etc
the X-pipe does a few things..
It adds scavaging,, and balances out the V8 exhaust banks, and pressure,,
it adds about 2-5 hp, from the dyno's and techs I have talked to, from racing and exhaust..
most important, it balances out the sound,, making the car alot less burbly, and less motor boat like, and can smooth out the blum blub of the cylinder banks into a much smoother, midtone euro sound..
03-01-2009, 05:10 AM
#38
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Mercedes,Porsche etc
well the magnaflow, X-pipe, and the people who invented the X-pipe for street cars, is mandrell bent and good,, I have one, and its perfect,
and under $100
its 304 stainless, mandrel bent, and a copy of nascar design.
however there are cheap chinese copies on ebay that suck
and I would not reccommend
03-01-2009, 05:15 AM
#39
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Mercedes,Porsche etc
YES,, alot,, the unwanted burble, and blub blub sound goes away, that sounds like a motor boat from using straight pipes,aka CAMARO or MUSTANG muscle car sound and you will have with a X-pipe, a much more refined EURO sound,, with more balanced with constant sound mixing the exhaust from both exhaust banks, and a even midtone..
like that from a ASTON, or AUDI
assuming your put high flow bullet resonators after the X-pipe 1/2 way between it and mufflers, it will even sound better and reduce drone,
especially if you have a aftermarket loud exhaust..
they dont hurt exhaust flow at all as they are straight through high flow design, but merely harmonize and reflect unwanted frequencies..
the merc dealer mechanics always ask me what I did to the exhaust to make it sound so good.. and I tell and show them the REMUS catback exhaust with X-pipe,
and bullet resonators.
I have them on after X-pipe and it sounds really good..
Last edited by storm; 03-01-2009 at 05:18 AM.
03-01-2009, 06:26 AM
#40
MBWorld Fanatic!
YES,, alot,, the unwanted burble, and blub blub sound goes away, that sounds like a motor boat from using straight pipes,aka CAMARO or MUSTANG muscle car sound and you will have with a X-pipe, a much more refined EURO sound,, with more balanced with constant sound mixing the exhaust from both exhaust banks, and a even midtone..
like that from a ASTON, or AUDI
assuming your put high flow bullet resonators after the X-pipe 1/2 way between it and mufflers, it will even sound better and reduce drone,
especially if you have a aftermarket loud exhaust..
they dont hurt exhaust flow at all as they are straight through high flow design, but merely harmonize and reflect unwanted frequencies..
the merc dealer mechanics always ask me what I did to the exhaust to make it sound so good.. and I tell and show them the REMUS catback exhaust with X-pipe,
and bullet resonators.
I have them on after X-pipe and it sounds really good..
like that from a ASTON, or AUDI
assuming your put high flow bullet resonators after the X-pipe 1/2 way between it and mufflers, it will even sound better and reduce drone,
especially if you have a aftermarket loud exhaust..
they dont hurt exhaust flow at all as they are straight through high flow design, but merely harmonize and reflect unwanted frequencies..
the merc dealer mechanics always ask me what I did to the exhaust to make it sound so good.. and I tell and show them the REMUS catback exhaust with X-pipe,
and bullet resonators.
I have them on after X-pipe and it sounds really good..
?Just want to see
03-02-2009, 02:28 AM
#42
Super Member
bends
are you telling me that VRP has a mandrel bending machine. I highly doubt it, it cost 100's of thousands of dollars and the machine is huge- in most cases, you just buy pipes that have certain angles bent for 20-40 bucks a piece and cut and weld
you can buy the pieces yourself and take them to your muffler shop to put one together
http://www.spdexhaust.com/ServicesB.html
you can buy the pieces yourself and take them to your muffler shop to put one together
http://www.spdexhaust.com/ServicesB.html
03-02-2009, 02:34 AM
#43
Not true, New Benders are going for ~$50K and now there are plenty to be had for pennies on the dollar. The benders aren't that big either.
Having said that from what I've seen Vadim doesn't have a mandrel bender since all the photos of his "Prototype's" are crush bent
Having said that from what I've seen Vadim doesn't have a mandrel bender since all the photos of his "Prototype's" are crush bent
