Introducing VK Motorwerks Catless Downpipes

vbmw335 · 01-26-2009, 09:30 AM

also Vince are you guys coming out with catted dp's as well?

munters · 01-26-2009, 10:08 AM

Quote:

Originally Posted by vbmw335

also Vince are you guys coming out with catted dp's as well?

I hope so.. but for the XI

Sal@AUTOcouture · 01-26-2009, 11:21 AM

Quote:

Originally Posted by vbmw335

also Vince are you guys coming out with catted dp's as well?

Quote:

Originally Posted by vbmw335

Sometimes Ignorance is bliss.

reading the thread helps

mwahlert · 01-26-2009, 11:48 AM

i'm surprised to see another downpipe w/o a flex section....

vbmw335 · 01-26-2009, 11:55 AM

Quote:

Originally Posted by AutoCouture

reading the thread helps

Thanks man . I missed it while scrolling too fast at work.

Vince@ V K Motorwerks · 01-27-2009, 09:31 AM

Quote:

Originally Posted by mwahlert

i'm surprised to see another downpipe w/o a flex section....

Why is that?

mwahlert · 01-27-2009, 09:51 AM

Quote:

Originally Posted by Vince@ V K Motorwerks

Why is that?

idk i just figured someone would finally bring a pipe to market w/ a flex section instead of following the lead of all other vendors...just because everyone else is doing it doesn't make it right

there is a flex pipe in the factory dp for a reason...

how many other cars are out there that have flex sections in stock form - and then look at the aftermarket dp's.... 90% of them still have flex sections..

cn555ic · 01-27-2009, 09:55 AM

Quote:

Originally Posted by mwahlert

idk i just figured someone would finally bring a pipe to market w/ a flex section instead of following the lead of all other vendors...

there is a flex pipe in the factory dp for a reason...

how many other cars are out there that have flex sections in stock form - and then look at the aftermarket dp's.... 90% of them still have flex sections..

I agree I would like to see some kind of flex in the aftermarket DPs...There is so much stress from the torque that the engine moves a tad bit which the flex help to equalize the movement of the engine.

mwahlert · 01-27-2009, 10:02 AM

Quote:

Originally Posted by cn555ic

I agree I would like to see some kind of flex in the aftermarket DPs...There is so much stress from the torque that the engine moves a tad bit which the flex help to equalize the movement of the engine.

yeah - i won't be buying DP's until one comes along w/ a flex section.

cn555ic · 01-27-2009, 10:07 AM

Quote:

Originally Posted by mwahlert

yeah - i won't be buying DP's until one comes along w/ a flex section.

Yeah! I definitely have to agree with you on this...I was eyeing the CP-E DPs and they are also without the flex portion and their is Cast Iron I think...Although I like them, I am still skeptical on buying them for this one reason of not having a flex portion added to the DPs..

Vince@ V K Motorwerks · 01-27-2009, 10:40 AM

NO PROBLEM! If thats what you guys want then let me know. We will do it. The same thing happened with our IC, we came out with a IC that required cutting, you guys said, "no, vince, we want a direct bolt-on." So I said, "ok." and we went to work. What the customer wants is what the customer gets!

kenneth · 01-27-2009, 10:45 AM

Quote:

Originally Posted by Vince@ V K Motorwerks

NO PROBLEM! If thats what you guys want then let me know. We will do it. The same thing happened with our IC, we came out with a IC that required cutting, you guys said, "no, vince, we want a direct bolt-on." So I said, "ok." and we went to work. What the customer wants is what the customer gets!

Now, how can you disagree with that

Way to go Vince......

Not to sound negative or counter productive, wouldn't a flex section be more prone to faster rusting and therefore require changind down the road?

Rob@RBTurbo · 01-27-2009, 10:48 AM

Flex sections additionally allow for some installation ease, especially in the event the components have some error in manufacturing. Flexes are also generally more prevalent on Transversely mounted engines, unlike the 335i. Personally I do not see a big advantage in them if the pipes are designed correctly. Referring to the 2007 Engine Management Docs as part of the sticky on this forum, page 11, it appears the Downpipes do NOT have flex sections.... but its possible that is outdated information as well.

Rob

Rob@RBTurbo · 01-27-2009, 10:53 AM

There are certain outfits who manufacture extremely high quality flex sections. True 100% Stainles steel (flex and ends). Most of them you see out there you are correct they are low quality materials but fairly priced. IIRC, these high quality shorter 2.5" flexes would cost somewhere around $80 ea. However, I think the biggest advantage of using them would be peace of mind during install.

Quote:

Originally Posted by kenneth

Now, how can you disagree with that

Way to go Vince......

Not to sound negative or counter productive, wouldn't a flex section be more prone to faster rusting and therefore require changind down the road?

Vince@ V K Motorwerks · 01-27-2009, 11:06 AM

We have no problem adding a flex section if you feel that it will give you a piece of mind during install, I personally feel that its not a big deal because we have had no issues with installing the downpipes without them. I will look into the best solution for manufacturing the downpipes with a flex section without compromising the longevity of the unit. This can easily be done by using high grade stainless steel which has a great tolerance for heat and corrosion.

mwahlert · 01-27-2009, 11:16 AM

Quote:

Originally Posted by Vince@ V K Motorwerks

We have no problem adding a flex section if you feel that it will give you a piece of mind during install, I personally feel that its not a big deal because we have had no issues with installing the downpipes without them. I will look into the best solution for manufacturing the downpipes with a flex section without compromising the longevity of the unit. This can easily be done by using high grade stainless steel which has a great tolerance for heat and corrosion.

bring a downpipe to market with a high quality all stainless flex secion and i'll buy a set - along w/ your IC..

Vince@ V K Motorwerks · 01-27-2009, 11:20 AM

Quote:

Originally Posted by mwahlert

bring a downpipe to market with a high quality all stainless flex secion and i'll buy a set - along w/ your IC..

You got a deal!

munters · 01-27-2009, 02:44 PM

And HFC for the XI

Mr. 5 · 01-27-2009, 04:17 PM

Quote:

Originally Posted by Vince@ V K Motorwerks

We have no problem adding a flex section if you feel that it will give you a piece of mind during install, I personally feel that its not a big deal because we have had no issues with installing the downpipes without them. I will look into the best solution for manufacturing the downpipes with a flex section without compromising the longevity of the unit. This can easily be done by using high grade stainless steel which has a great tolerance for heat and corrosion.

Based on my experiences, there is no need for the flex fitting on the DPs.

mwahlert · 01-27-2009, 04:22 PM

Quote:

Originally Posted by Mr. 5

Based on my experiences, there is no need for the flex fitting on the DPs.

then why did bmw spend countless dollars designing the factory component to use one if it is un-necessary?

Mr. 5 · 01-27-2009, 04:38 PM

Quote:

Originally Posted by mwahlert

then why did bmw spend countless dollars designing the factory component to use one if it is un-necessary?

Because BMW (and most companies) use 409 stainless steel with their exhausts, which is cheap!

I'm assuming that VK uses 304 stainless steel like the other DP companies, which is strong and long lasting!
People have to understand that the "countless dollars" spent sometimes equals countless dollars saved by using a cheaper product.

mwahlert · 01-27-2009, 04:43 PM

Quote:

Originally Posted by Mr. 5

Because BMW (and most companies) use 409 stainless steel with their exhausts, which is cheap!

I'm assuming that VK uses 304 stainless steel like the other DP companies, which is strong and long lasting!
People have to understand that the "countless dollars" spent sometimes equals countless dollars saved by using a cheaper product.

thats not why the flex sections are used...

01-26-2009, 09:30 AM	#67
vbmw335 Second Lieutenant 19 Rep 263 Posts Drives: BMW 335i Coupe Join Date: Oct 2006 Location: on the moon iTrader: (0)	also Vince are you guys coming out with catted dp's as well? __________________ 335i coupe Procede 700 HP EPL Tuned Porsche 911 Turbo E46 M3 SMG BMW X5 4.8 is
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01-26-2009, 11:48 AM	#70
mwahlert Lieutenant Colonel 95 Rep 1,659 Posts Drives: 2009 335i Join Date: Apr 2008 Location: NC iTrader: (8)	i'm surprised to see another downpipe w/o a flex section....
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01-27-2009, 10:40 AM	#77
Vince@ V K Motorwerks Lieutenant Colonel 148 Rep 1,738 Posts Drives: 01 Black 911 Turbo, 09 X5 Join Date: May 2007 Location: Bloomingdale, IL iTrader: (0)	NO PROBLEM! If thats what you guys want then let me know. We will do it. The same thing happened with our IC, we came out with a IC that required cutting, you guys said, "no, vince, we want a direct bolt-on." So I said, "ok." and we went to work. What the customer wants is what the customer gets!
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01-27-2009, 10:48 AM	#79
Rob@RBTurbo Lieutenant Colonel 387 Rep 1,571 Posts Drives: '08 335I AT, '14 M6 DCT Join Date: Jan 2008 Location: St. Louis, MO iTrader: (5)	Flex sections additionally allow for some installation ease, especially in the event the components have some error in manufacturing. Flexes are also generally more prevalent on Transversely mounted engines, unlike the 335i. Personally I do not see a big advantage in them if the pipes are designed correctly. Referring to the 2007 Engine Management Docs as part of the sticky on this forum, page 11, it appears the Downpipes do NOT have flex sections.... but its possible that is outdated information as well. Rob
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01-27-2009, 11:06 AM	#81
Vince@ V K Motorwerks Lieutenant Colonel 148 Rep 1,738 Posts Drives: 01 Black 911 Turbo, 09 X5 Join Date: May 2007 Location: Bloomingdale, IL iTrader: (0)	We have no problem adding a flex section if you feel that it will give you a piece of mind during install, I personally feel that its not a big deal because we have had no issues with installing the downpipes without them. I will look into the best solution for manufacturing the downpipes with a flex section without compromising the longevity of the unit. This can easily be done by using high grade stainless steel which has a great tolerance for heat and corrosion.
	Appreciate 0

01-27-2009, 02:44 PM	#84
munters Captain 11 Rep 677 Posts Drives: E91 335XI AT Dakota Black M Join Date: Jun 2007 Location: Switzerland iTrader: (0)	And HFC for the XI __________________ 59 Corvette, 72 240Z, 73 Espada, ZXR
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