Cheap Downpipe option

Bmwdoubles_ · 08-21-2020, 12:00 PM

Quote:

Originally Posted by Gjohnson7

Awesome man! Glad to hear he has something in the works for you!

Send link to cheap DP. I need one for track days. Thanks.

Gjohnson7 · 08-21-2020, 01:30 PM

Quote:

Originally Posted by Bmwdoubles_

Quote:

Originally Posted by Gjohnson7

Awesome man! Glad to hear he has something in the works for you!

Send link to cheap DP. I need one for track days. Thanks.

No web link yet, he's still working on that. You can email him to purchase here.

rvgparts@gmail.com

ramman434 · 11-12-2020, 08:37 AM

Update for everyone: I emailed Valentin @ RVG Parts this morning in regards to 4" catless downpipes for the '14-16 535i. He got back to me within 10 minutes. He said that they've finished several prototypes since he and I last spoke in August.
They should have a finished product for sale within 5 weeks!

Encendido3 · 11-15-2020, 03:03 PM

Quote:

Originally Posted by ramman434

Update for everyone: I emailed Valentin @ RVG Parts this morning in regards to 4" catless downpipes for the '14-16 535i. He got back to me within 10 minutes. He said that they've finished several prototypes since he and I last spoke in August.
They should have a finished product for sale within 5 weeks!

Quote:

Originally Posted by ramman434

Update for everyone: I emailed Valentin @ RVG Parts this morning in regards to 4" catless downpipes for the '14-16 535i. He got back to me within 10 minutes. He said that they've finished several prototypes since he and I last spoke in August.
They should have a finished product for sale within 5 weeks!

This is good to hear! More options is always best. Please make sure to do a review once you get it.

prelude2perfect · 11-16-2020, 10:11 AM

FYI, the 4” eBay DP from speedpower does not fit, not even close. Sending back for refund now. Guess I’ll be going with VRSF since that’s the cheapest option known to fit for now.

https://www.ebay.com/itm/4-Catless-D....m46890.l49292

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ramman434 · 11-17-2020, 10:18 AM

Jeez^^ so it looks like it's too short by several inches?

lsturbointeg · 11-17-2020, 11:35 PM

oh man so even with the flex section its not lining up?

1Quick545 · 12-31-2020, 07:35 AM

Any update on 4" DP?

ramman434 · 01-06-2021, 10:53 AM

Quote:

Originally Posted by 1Quick545

Any update on 4" DP?

I haven't checked back with them, but I'll see if I can reach out today.

ramman434 · 01-06-2021, 01:51 PM

Got a response from Valentin @ RVG: "The 4" version quality wasn't perfect as expected. The primary o2 sensor bung has a weird position on neck of the downpipe, after more testing we figure out the o2 sensor reading isn't really accurate.
Right now we are working to build an billet neck which will fix the issues and don't affect the air flow. Unfortunately we don't have any ETA for that, but I can say probably more than 2 months. I apologize for the inconvenience."

I'm not in any rush, so I'm willing to wait and see what his product is like when available.

T-Bone18 · 01-12-2021, 09:29 PM

I pull the trigger today and I did ordered the 3.5" catless downpipe from RVGPARTS. I make it sounds like it is a big deal because I was gonna order the Evolution Raceworks catless DP. Gjohnson7 convince me that it is just a pipe and save the money. It is true, it's half the price, they sell direct so no 3rd party. Back to the DP, hopefully those bracket will fit and I won't have any leak. Here some picture, I will keep you posted, looking to install it in the next 2 weeks. Thank you for Valentin from RVGPARTS who respond to email in a heartbeat. To order, his email is rvgparts@gmail.com

Unspec · 01-13-2021, 11:22 AM

Quote:

Originally Posted by T-Bone18

I pull the trigger today and I did ordered the 3.5" catless downpipe from RVGPARTS. I make it sounds like it is a big deal because I was gonna order the Evolution Raceworks catless DP. Gjohnson7 convince me that it is just a pipe and save the money. It is true, it's half the price, they sell direct so no 3rd party. Back to the DP, hopefully those bracket will fit and I won't have any leak. Here some picture, I will keep you posted, looking to install it in the next 2 weeks. Thank you for Valentin from RVGPARTS who respond to email in a heartbeat. To order, his email is rvgparts@gmail.com

That flex section looks sketchy as hell lol

ramman434 · 01-13-2021, 02:28 PM

Lol, that Flex Section is completely different than the one the OP bought

T-Bone18 · 01-13-2021, 02:49 PM

RVG reply it's a newer technology. I did not ask the explanation behind it, it's a pipe...

Gjohnson7 · 01-13-2021, 03:30 PM

Yeah, that's the latest version. Looks awesome by the way. I will do a new video on the updated version.

@T-Bone18 Glad I could help you save money!!!

Unspec · 01-13-2021, 03:50 PM

Quote:

Originally Posted by T-Bone18

RVG reply it's a newer technology. I did not ask the explanation behind it, it's a pipe...

It's probably so they can have the same pipe design for both catted and non-catted downpipes.

Catted downpipes get HOT, and hot metal likes to expand. Flex section gives it that room to expand.

5soko · 01-13-2021, 05:59 PM

Why is the flex section on the wrong side of the downpipe? OEM uses the flex section on the turbo side of the DP so it can expand with heat and flex

T-Bone18 · 01-14-2021, 09:09 AM

That will make sense. I saw that on the M5 F90 but not on the F10 yet, maybe the sensors are in the way ? To me, I am ok with it as long it as one.

Bvritr · 01-14-2021, 11:21 AM

Quote:

Originally Posted by Gjohnson7

Yeah, that's the latest version. Looks awesome by the way. I will do a new video on the updated version.

@T-Bone18 Glad I could help you save money!!!

Thanks for sharing, I was about to order a much more expensive pipe when I stumbled upon this post. I sent an email and he responded in minutes answering my questions.

Unspec · 01-14-2021, 01:34 PM

Quote:

Originally Posted by 5soko

Why is the flex section on the wrong side of the downpipe? OEM uses the flex section on the turbo side of the DP so it can expand with heat and flex

Doesn't matter where it is as long as it's there. Expansion will push towards whatever offers the least resistance.

5soko · 01-15-2021, 04:18 PM

Quote:

Originally Posted by Unspec

Doesn't matter where it is as long as it's there. Expansion will push towards whatever offers the least resistance.

Not when the pipe is bolted and braced to the trans on the turbo side lol
If its there from OEM, then there is a reason they saw.

Unspec · 01-15-2021, 06:36 PM

Quote:

Originally Posted by 5soko

Not when the pipe is bolted and braced to the trans on the turbo side lol
If its there from OEM, then there is a reason they saw.

This isn't how thermal expansion works. The entire pipe is expanding. The only area where stress would be induced due to being constrained is where the bracing is welded to the pipe. Everywhere else, the expansion will just "flow" past and into the flex section. Not every OEM design decision is made because there's some kind of physics magic involved. For one, BMW may have wanted to just put it higher up to decrease water contact and thus lower the chances of corrosion on such a high surface area part (mesh)

It's also really not that much expansion to begin with. In 304 stainless, a 30cm pipe would expand about 3mm over a 600*C temperature change.

11-12-2020, 08:37 AM	#25
ramman434 Lieutenant 712 Rep 538 Posts Drives: F30 335i Join Date: Dec 2012 Location: Fort Lauderdale, FL iTrader: (0)	Update for everyone: I emailed Valentin @ RVG Parts this morning in regards to 4" catless downpipes for the '14-16 535i. He got back to me within 10 minutes. He said that they've finished several prototypes since he and I last spoke in August. They should have a finished product for sale within 5 weeks! __________________ '07 Montego Blue/Saddle Brown E92 335i - 6spd. - SOLD '16 Carbon Black Metallic F10 535i M-Sport - TOTALED 11/21/21 '13 Black Sapphire Metallic F30 335i M-Sport - unknown charge pipe, MSport Exhaust, 20" 405M wheels, $61k MSRP, CF M4 Mirror caps & Spoiler, NGK plugs, Dinan Coils, BMS intake
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11-16-2020, 10:11 AM	#27
prelude2perfect Captain 60 Rep 621 Posts Drives: 2013 M5 and 2015 535i Join Date: Apr 2010 Location: Savannah, GA iTrader: (8)	FYI, the 4” eBay DP from speedpower does not fit, not even close. Sending back for refund now. Guess I’ll be going with VRSF since that’s the cheapest option known to fit for now. https://www.ebay.com/itm/4-Catless-D....m46890.l49292 Last edited by prelude2perfect; 11-16-2020 at 10:17 AM..
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11-17-2020, 10:18 AM	#28
ramman434 Lieutenant 712 Rep 538 Posts Drives: F30 335i Join Date: Dec 2012 Location: Fort Lauderdale, FL iTrader: (0)	Jeez^^ so it looks like it's too short by several inches? __________________ '07 Montego Blue/Saddle Brown E92 335i - 6spd. - SOLD '16 Carbon Black Metallic F10 535i M-Sport - TOTALED 11/21/21 '13 Black Sapphire Metallic F30 335i M-Sport - unknown charge pipe, MSport Exhaust, 20" 405M wheels, $61k MSRP, CF M4 Mirror caps & Spoiler, NGK plugs, Dinan Coils, BMS intake
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11-17-2020, 11:35 PM	#29
lsturbointeg Lieutenant General 9156 Rep 14,522 Posts Drives: 2011 535i Jet Black Join Date: Aug 2014 Location: Asian lost in OH iTrader: (0)	oh man so even with the flex section its not lining up? __________________ ~F90Conversion~21"3Piece Forged AvantGardeWheels~KWV1Coilovers~CQUENCE slotted/drilled rotors~GoodridgeStainlesslines~MeisterschaftQuadEx haust~Akrapovic 4"tips~VRSF DP~VRSF CP~TurboSmart BOV~K&N filter~CarbonFiberExteriorComponents~GladenAlphaCo mponents~MatchUp7BMW~Punch P300-12T~ Follow me on Instagram: lsturbointeg
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12-31-2020, 07:35 AM	#30
1Quick545 Private 2 Rep 64 Posts Drives: BMW 535 and X5 Join Date: Dec 2019 Location: Dallas iTrader: (0)	Any update on 4" DP?
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01-06-2021, 01:51 PM	#32
ramman434 Lieutenant 712 Rep 538 Posts Drives: F30 335i Join Date: Dec 2012 Location: Fort Lauderdale, FL iTrader: (0)	Got a response from Valentin @ RVG: "The 4" version quality wasn't perfect as expected. The primary o2 sensor bung has a weird position on neck of the downpipe, after more testing we figure out the o2 sensor reading isn't really accurate. Right now we are working to build an billet neck which will fix the issues and don't affect the air flow. Unfortunately we don't have any ETA for that, but I can say probably more than 2 months. I apologize for the inconvenience." I'm not in any rush, so I'm willing to wait and see what his product is like when available. __________________ '07 Montego Blue/Saddle Brown E92 335i - 6spd. - SOLD '16 Carbon Black Metallic F10 535i M-Sport - TOTALED 11/21/21 '13 Black Sapphire Metallic F30 335i M-Sport - unknown charge pipe, MSport Exhaust, 20" 405M wheels, $61k MSRP, CF M4 Mirror caps & Spoiler, NGK plugs, Dinan Coils, BMS intake
	Appreciate 0 Quote

01-12-2021, 09:29 PM	#33
T-Bone18 Private 22 Rep 78 Posts Drives: 2014 535i xDrive Join Date: Aug 2020 Location: Ottawa, Ontario iTrader: (0) Garage List 2014 BMW 535i xDrive [0.00]	I pull the trigger today and I did ordered the 3.5" catless downpipe from RVGPARTS. I make it sounds like it is a big deal because I was gonna order the Evolution Raceworks catless DP. Gjohnson7 convince me that it is just a pipe and save the money. It is true, it's half the price, they sell direct so no 3rd party. Back to the DP, hopefully those bracket will fit and I won't have any leak. Here some picture, I will keep you posted, looking to install it in the next 2 weeks. Thank you for Valentin from RVGPARTS who respond to email in a heartbeat. To order, his email is rvgparts@gmail.com
	Appreciate 0 Quote

01-13-2021, 02:28 PM	#35
ramman434 Lieutenant 712 Rep 538 Posts Drives: F30 335i Join Date: Dec 2012 Location: Fort Lauderdale, FL iTrader: (0)	Lol, that Flex Section is completely different than the one the OP bought __________________ '07 Montego Blue/Saddle Brown E92 335i - 6spd. - SOLD '16 Carbon Black Metallic F10 535i M-Sport - TOTALED 11/21/21 '13 Black Sapphire Metallic F30 335i M-Sport - unknown charge pipe, MSport Exhaust, 20" 405M wheels, $61k MSRP, CF M4 Mirror caps & Spoiler, NGK plugs, Dinan Coils, BMS intake
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01-13-2021, 02:49 PM	#36
T-Bone18 Private 22 Rep 78 Posts Drives: 2014 535i xDrive Join Date: Aug 2020 Location: Ottawa, Ontario iTrader: (0) Garage List 2014 BMW 535i xDrive [0.00]	RVG reply it's a newer technology. I did not ask the explanation behind it, it's a pipe... Last edited by T-Bone18; 01-13-2021 at 03:02 PM..
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01-13-2021, 03:30 PM	#37
Gjohnson7 Lieutenant 255 Rep 423 Posts Drives: 11' BMW 535i, 12' Lexus RX350, Join Date: Aug 2019 Location: Broken Arrow, OK iTrader: (3) Garage List 2011 535i [0.00]	Yeah, that's the latest version. Looks awesome by the way. I will do a new video on the updated version. @T-Bone18 Glad I could help you save money!!! __________________ Checkout my YouTube channel, Like and Subscribe. https://www.youtube.com/user/Gjohnson7771 MHD Flash, RVG Catless DP, RVG CP, RVG Boost Pipe, Walbro 455 LPFP, Style 433 Wheels, BC Coilovers, Ebay Strut bar, M-Sport Front Conversion, RVG FMIC, 6WB Cluster.
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01-13-2021, 05:59 PM	#39
5soko Brigadier General 333 Rep 4,632 Posts Drives: M5 Join Date: Aug 2007 Location: Brooklyn, NY iTrader: (4)	Why is the flex section on the wrong side of the downpipe? OEM uses the flex section on the turbo side of the DP so it can expand with heat and flex __________________ Current: E63S AMG 4matic RENNtech \|\| M5 Evolve..Eventuri \|\| F10 LCI 535i MHD
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01-14-2021, 09:09 AM	#40
T-Bone18 Private 22 Rep 78 Posts Drives: 2014 535i xDrive Join Date: Aug 2020 Location: Ottawa, Ontario iTrader: (0) Garage List 2014 BMW 535i xDrive [0.00]	That will make sense. I saw that on the M5 F90 but not on the F10 yet, maybe the sensors are in the way ? To me, I am ok with it as long it as one. Last edited by T-Bone18; 01-18-2021 at 07:35 PM..
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