Introducing VK Motorwerks Catless Downpipes

McLuVan · 01-18-2009, 02:35 AM

wow omg
great price

letterkills155 · 01-18-2009, 03:09 AM

dyno?

Turkishexpress · 01-18-2009, 03:21 AM

Wow, you guys are coming out with some good stuff for reasonable prices

vbmw335 · 01-18-2009, 08:52 AM

Vince, this is awesome ,looks top notch...looking forward for this.

ar design · 01-19-2009, 12:23 AM

Quote:

Originally Posted by Vince@ V K Motorwerks

These are 2.5" we did the whole 3" thing but it was pointless to go from a 2.5 opening to a 3" and then taper back to a 2.5". We found that even 2.5" is more then enough on these turbos.

The OEM turbos have a 3in opening, FWIW. So most are just tapering from 3" to 2.5"

Are you grinding welds to attain polished finish? Argon backpurged? Lastly, where are they being made?

Proper Motion LLC · 01-19-2009, 12:38 AM

Quote:

Originally Posted by ar design

The OEM turbos have a 3in opening, FWIW. So most are just tapering from 3" to 2.5"

Are you grinding welds to attain polished finish? Argon backpurged? Lastly, where are they being made?

Damn, if that's true than I hope VK is mistaken, and their downpipes are 3" tapered to 2.5.

2.5" all around obviously makes no sense if the turbo opening is 3"

But I'd also be worried about losing torque with 3" end to end downpipes.

Sniz · 01-19-2009, 12:48 AM

great price! Best of luck.

ar design · 01-19-2009, 12:51 AM

I have yet to see a single dyno with torque loss vs a more restrictive exhaust on a turbo car.

BMW_TT · 01-19-2009, 08:49 AM

Vince!!! Stop marketing your products at this low of a price. I might go broke buying them!

Very nice welds.

BMW_TT · 01-19-2009, 08:52 AM

From the picture, it does look like the DP starts at 3in and tapers to 2.5in

Sparky66 · 01-19-2009, 09:04 AM

Quote:

Originally Posted by 09AlpineTTSedan

But I'd also be worried about losing torque with 3" end to end downpipes.

Quite the opposite.
The goal of a turbo engine is to reduce back pressure as much as possible so the more free flowing the system is the more torque you will produce.
Normally aspirated engines require backpressure to create scavenging to make more torque.

Hunter399 · 01-19-2009, 09:39 AM

Look good guys!

vbmw335 · 01-19-2009, 10:06 AM

Quote:

Originally Posted by ar design

The OEM turbos have a 3in opening, FWIW. So most are just tapering from 3" to 2.5"

Are you grinding welds to attain polished finish? Argon backpurged? Lastly, where are they being made?

Just curious ! are you guys interested in buying these for your cars?

vbmw335 · 01-19-2009, 10:14 AM

Quote:

Originally Posted by BMW_TT

From the picture, it does look like the DP starts at 3in and tapers to 2.5in

+1...I am sure Vince will clear this up.

Also not sure why people buy the "grinding welds is bad" BS...i have seen products with more critical applications having super polished grinded welds.

If the weld penetration is good (which is basically a good weld) then the process of grinding should not be a problem as long they use the right methods and take time and care to do it. Its done routinely in many industries.

Vince@ V K Motorwerks · 01-19-2009, 10:16 AM

The reason we say these are 2.5" and not 3" is because they open up at 3" and then taper down to a 2.5". I dont want to market these as 3" if it is going to taper down to 2.5", although I know that marketing these as 3" dp's will sound better but we try to stay away from the hype.

ar design · 01-19-2009, 12:27 PM

Quote:

Originally Posted by Vince@ V K Motorwerks

The reason we say these are 2.5" and not 3" is because they open up at 3" and then taper down to a 2.5". I dont want to market these as 3" if it is going to taper down to 2.5", although I know that marketing these as 3" dp's will sound better but we try to stay away from the hype.

I was referring to your initial post where you said it would be going from 2.5" to 3" to 2.5".

Banker335i · 01-19-2009, 12:42 PM

These are the best looking so fare...now are they the best hp producing?

Vince@ V K Motorwerks · 01-19-2009, 01:16 PM

Quote:

Originally Posted by Banker335i

These are the best looking so fare...now are they the best hp producing?

Thank you! The only way to truly find out how well downpipes produce power is to have all the different dps tested on the same day/same dyno/ under the same conditions. I personally feel that you will find that the hp/tq difference will not be significant in any downpipe. What will dictate greater variances in power output is other supporting mods and tune settings.

The problem with posting hp/tq numbers and then comparing them to other venders is that every vendor uses their own testing procedures. Its very easy to manipulate numbers on a dyno.

Vince@ V K Motorwerks · 01-19-2009, 02:49 PM

Quote:

Originally Posted by scalbert

Any internal pictures?

Here are the pictures of the inside of the downpipes. As you see its very smooth.

In the last pic, you can see how the color changes to match to the golden hue of the stock exhaust.

scalbert · 01-19-2009, 03:06 PM

Looks good.

vbmw335 · 01-19-2009, 03:14 PM

+1

Looks great inside. This is what i have been waiting for. Thanks for posting.

Banker335i · 01-19-2009, 10:36 PM

Yeah Vince, your right. I’ll go with yours, cuz they look good, have less curves than the others, and its half the price. Am I being rash?

01-18-2009, 02:35 AM	#23
McLuVan Lieutenant General 304 Rep 13,114 Posts Drives: ///M3 Join Date: Jan 2008 Location: Socal~818~ iTrader: (1)	wow omg great price
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01-18-2009, 03:09 AM	#24
letterkills155 Second Lieutenant 9 Rep 228 Posts Drives: 08 e92 335i Join Date: Feb 2007 Location: st.louis iTrader: (0) Garage List 08 335i [0.00]	dyno?
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01-18-2009, 03:21 AM	#25
Turkishexpress Gixxer Man 14 Rep 599 Posts Drives: '08 335i E90 / '06 Range HSE Join Date: Aug 2008 Location: Tysons/Sterling, VA iTrader: (2)	Wow, you guys are coming out with some good stuff for reasonable prices __________________ Stable: 2008 E90 335i JB3 etc..., 2006 Range Rover HSE, K7 GSX-R 600 Former Stable: 2008 MB C300, 2007 Chevy Avalanche, 2006 Evo IX (544awhp), 2005 Sti, 2003 Evo...
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01-18-2009, 08:52 AM	#26
vbmw335 Second Lieutenant 19 Rep 263 Posts Drives: BMW 335i Coupe Join Date: Oct 2006 Location: on the moon iTrader: (0)	Vince, this is awesome ,looks top notch...looking forward for this. __________________ 335i coupe Procede 700 HP EPL Tuned Porsche 911 Turbo E46 M3 SMG BMW X5 4.8 is
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01-19-2009, 12:48 AM	#29
Sniz Lieutenant General 654 Rep 10,587 Posts Drives: e92 335 - gone // e36 M3 turbo Join Date: Mar 2007 Location: Ellicott City, MD iTrader: (1)	great price! Best of luck. __________________
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01-19-2009, 12:51 AM	#30
ar design 295 Rep 4,408 Posts Drives: 04 M3 Join Date: Jan 2008 Location: Denver, CO iTrader: (9)	I have yet to see a single dyno with torque loss vs a more restrictive exhaust on a turbo car. __________________ -Critter
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01-19-2009, 08:49 AM	#31
BMW_TT Colonel 224 Rep 2,548 Posts Drives: E92 335i Join Date: Aug 2007 Location: Dallas, TX iTrader: (4)	Vince!!! Stop marketing your products at this low of a price. I might go broke buying them! Very nice welds.
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01-19-2009, 08:52 AM	#32
BMW_TT Colonel 224 Rep 2,548 Posts Drives: E92 335i Join Date: Aug 2007 Location: Dallas, TX iTrader: (4)	From the picture, it does look like the DP starts at 3in and tapers to 2.5in
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01-19-2009, 09:39 AM	#34
Hunter399 Major General 323 Rep 8,091 Posts Drives: F90M5 Join Date: Apr 2005 Location: Houston, TX iTrader: (33)	Look good guys!
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01-19-2009, 10:16 AM	#37
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)	The reason we say these are 2.5" and not 3" is because they open up at 3" and then taper down to a 2.5". I dont want to market these as 3" if it is going to taper down to 2.5", although I know that marketing these as 3" dp's will sound better but we try to stay away from the hype.
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01-19-2009, 12:42 PM	#39
Banker335i Second Lieutenant 8 Rep 271 Posts Drives: BMW 2008 335i Join Date: Jan 2008 Location: Washington iTrader: (0)	These are the best looking so fare...now are they the best hp producing?
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01-19-2009, 03:06 PM	#42
scalbert Major General 153 Rep 5,780 Posts Drives: '13 S4, '15 Q7 Join Date: Feb 2007 Location: Woodstock, GA iTrader: (8)	Looks good.
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01-19-2009, 03:14 PM	#43
vbmw335 Second Lieutenant 19 Rep 263 Posts Drives: BMW 335i Coupe Join Date: Oct 2006 Location: on the moon iTrader: (0)	+1 Looks great inside. This is what i have been waiting for. Thanks for posting. __________________ 335i coupe Procede 700 HP EPL Tuned Porsche 911 Turbo E46 M3 SMG BMW X5 4.8 is
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01-19-2009, 10:36 PM	#44
Banker335i Second Lieutenant 8 Rep 271 Posts Drives: BMW 2008 335i Join Date: Jan 2008 Location: Washington iTrader: (0)	Yeah Vince, your right. I’ll go with yours, cuz they look good, have less curves than the others, and its half the price. Am I being rash?
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