Wound you install these on your vehicle ?

bantam · 08-29-2013, 06:12 PM

They failed to get full penetration on the weld in that location. The O2 Bung is a pretty low stress item, I would not be concerned, but I would consider inspecting the other welds. The protrusion of the O2 sensor does not *seem* as though it would create an issue for you.

E90Company · 08-29-2013, 06:14 PM

Quote:

Originally Posted by Tiago@VRSF

What's your experience with our V2's?

To be honest with you, I don't have experience with your V2's so I wouldn't be suprised if it improved. But the fact that revisions had to be made to V1, even though V1 was claimed to have perfect fitment at the time should tell us something.

07tundra · 08-29-2013, 08:40 PM

Quote:

Originally Posted by E90Company

To be honest with you, I don't have experience with your V2's so I wouldn't be suprised if it improved. But the fact that revisions had to be made to V1, even though V1 was claimed to have perfect fitment at the time should tell us something.

So that should apply to all vendors right? Isn't some vendor on a second batch of something ......i forget though?

E90Company · 08-29-2013, 08:42 PM

Quote:

Originally Posted by 07tundra

So that should apply to all vendors right? Isn't some vendor on a second batch of something ......i forget though?

Lol. Well I don't think the V1 downpipes were considered beta

Tiago@VRSF · 08-29-2013, 08:54 PM

We had over 600 sold of the V1's with less than a 3% defect rate.

There were a few fitment issues towards the end of the batch due to an issue with the jigs at our fabricator but it was resolved with the V2's. When we discovered that we needed a new set of jigs, we decided to enhance the pipe routing on both the short and long pipe to ensure easier install and increase the tolerances a bit. The the cast v band mouth also helps promote better flow and consistency with fitment.

joec500 · 08-30-2013, 12:31 AM

Well FFTEC just installed the latest batch of VRSF DP's without a hitch, rattle or O2 sensor reading issues.

I was a little surprised to see the sloppiness of the internal o2 bungs, but when you look at the external welds on the same o2 bung, the look great and solid. Fitment is spot on, no rattles and I got some increased HP with my E85 Tune.

If you want perfect cosmetic welds everywhere on part you never see once installed, pay 2.5x for something else.

Tiago@VRSF · 08-30-2013, 08:54 AM

I have absolute faith in our welds. There's a reason we offer a lifetime warranty

joec500 · 08-30-2013, 11:53 AM

Quote:

Originally Posted by Tiago@VRSF

I have absolute faith in our welds. There's a reason we offer a lifetime warranty

Totally not concerned about being strong enough for the job. But I am also a weld snob being a bike guy, where the welds stare at you all day long and carry way more loads than an o2 bung.

cad · 08-30-2013, 12:23 PM

Are people really concerned about the spot welds on the inside? As long as the weld on the outside is good, you're good to go. Worried about the o2 sensor heating up? It has to heat up to work.

C.Pop · 08-30-2013, 01:52 PM

Identify the design requirements then determine if it meets requirements. Pretty isn't better, it's pretty. You could do a full penetration fillet on the inside, then hand file and polish it smooth and that'd be about the prettiest thing possible but it doesn't make it meet the design requirements any better.

So if you're not a welding expert... and you don't understand nor have you identified the design requirements.... really what's left is just opinionated conjecture.

08-29-2013, 06:12 PM	#23
bantam Private First Class 20 Rep 144 Posts Drives: 2009 335i Join Date: Sep 2008 Location: Dallas, TX iTrader: (2)	They failed to get full penetration on the weld in that location. The O2 Bung is a pretty low stress item, I would not be concerned, but I would consider inspecting the other welds. The protrusion of the O2 sensor does not seem as though it would create an issue for you.
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08-29-2013, 08:54 PM	#27
Tiago@VRSF 2126 Rep 43,349 Posts Drives: F90 M5 Join Date: Dec 2007 Location: Doral, FL iTrader: (99) Garage List 2014 F30 328xi [0.00] 2015 F82 BMW M4 [0.00] 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00]	We had over 600 sold of the V1's with less than a 3% defect rate. There were a few fitment issues towards the end of the batch due to an issue with the jigs at our fabricator but it was resolved with the V2's. When we discovered that we needed a new set of jigs, we decided to enhance the pipe routing on both the short and long pipe to ensure easier install and increase the tolerances a bit. The the cast v band mouth also helps promote better flow and consistency with fitment.
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08-30-2013, 12:31 AM	#28
joec500 Brigadier General 141 Rep 3,055 Posts Drives: it has 4 wheels Join Date: Jul 2008 Location: Los Angeles iTrader: (12)	Well FFTEC just installed the latest batch of VRSF DP's without a hitch, rattle or O2 sensor reading issues. I was a little surprised to see the sloppiness of the internal o2 bungs, but when you look at the external welds on the same o2 bung, the look great and solid. Fitment is spot on, no rattles and I got some increased HP with my E85 Tune. If you want perfect cosmetic welds everywhere on part you never see once installed, pay 2.5x for something else. __________________ 2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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08-30-2013, 08:54 AM	#29
Tiago@VRSF 2126 Rep 43,349 Posts Drives: F90 M5 Join Date: Dec 2007 Location: Doral, FL iTrader: (99) Garage List 2014 F30 328xi [0.00] 2015 F82 BMW M4 [0.00] 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00]	I have absolute faith in our welds. There's a reason we offer a lifetime warranty
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08-30-2013, 12:23 PM	#31
cad Registered 0 Rep 3 Posts Drives: '07 e90 Join Date: Jun 2013 Location: Oregon iTrader: (0)	Are people really concerned about the spot welds on the inside? As long as the weld on the outside is good, you're good to go. Worried about the o2 sensor heating up? It has to heat up to work.
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08-30-2013, 01:52 PM	#32
C.Pop First Lieutenant 65 Rep 385 Posts Drives: 335i Join Date: May 2013 Location: AZ iTrader: (0)	Identify the design requirements then determine if it meets requirements. Pretty isn't better, it's pretty. You could do a full penetration fillet on the inside, then hand file and polish it smooth and that'd be about the prettiest thing possible but it doesn't make it meet the design requirements any better. So if you're not a welding expert... and you don't understand nor have you identified the design requirements.... really what's left is just opinionated conjecture.
	Appreciate 0 Quote