To DP or not DP?

pr0xy · 07-05-2018, 10:33 AM

Hello - I hope everyone had a safe 4th of July.

I have a M6 convertible with 5700 miles, running the Mission Performance Stage 1 tune. I have the IPE Exhaust system, which I really like but I also have the VRSF downpipes, which I didn't install, and I had them for 7 months now.

I need some assistance with deciding if I should install these. There a numerous positives, but I don't know if the positives outweigh the negatives when it comes to the excessive wastegate rattle and exhaust smell, especially since I drive with the top down, 90% of the time.

Any advice would be very much appreciated.

-Sebastian

mberbic · 07-05-2018, 01:23 PM

I put gutted factory DPs on my Convertible and the sound is incredible. Of course, I don't have any exhaust or any other mods done so I feel like it's a drastic improvement.

I drive mine with the top down 100% of the time and you honestly can't smell the exhaust.

One of the major downsides that i hate is the CEL since I haven't gotten around to getting a tune just yet and the car won't pass inspection due to this...

I installed the DPs myself in about 4 hours, would have been much faster with an extra set of hands and if I read all the instructions before going through it...

rsuhandy · 07-05-2018, 01:24 PM

I'm sure you've realized this, but it all comes down to whether you want Stage 2 and want more power. If you haven't already, I would suggest driving a car that is catless and decide if you can live with it; preferably a convertible in your case.

Jesse E93 · 07-05-2018, 02:32 PM

I installed DP’s for 2 days. I loved the power and exhaust note but I couldn’t daily it so I took mine off. A nice flash is plenty without your clutches burning ASAP.

mastatikle · 07-05-2018, 05:15 PM

I drive a gran coupe with no cats, no mufflers, and no resonators. With the windows up it’s no noticeable at all. The smell is only there if I’m revving at a stand still or in a confined space. I am also on a custom tune. Aside from the power the turbo whistle was worth it alone. People have pulled next to me and asked if it was a diesel lol

Flying Ace · 07-05-2018, 10:59 PM

A catless convertible? That pretty much ensures you drive it with top up every time

pr0xy · 07-06-2018, 08:06 PM

Thanks for all the replies.

Flying Ace -- yes, that is what I thought also.

Mr. M6 · 07-07-2018, 01:05 AM

i have AMS catless dp, smell is there out side only, wastage rattle at 1000-1300 rpm...

gregmb · 07-07-2018, 10:09 AM

Quote:

Originally Posted by Flying Ace

A catless convertible? That pretty much ensures you drive it with top up every time

Yep - I have the vert with the akra exhaust and I've thought about adding the AMS catted DPs. Would never go cattless given the smell as I keep the top down most of the time.

mberbic · 07-07-2018, 10:40 AM

If you're in standstill traffic I would understand being bothered by the smell...

If you're driving, it's not noticeable until you come to a stop

gregmb · 07-07-2018, 10:54 AM

Quote:

Originally Posted by mberbic

If you're in standstill traffic I would understand being bothered by the smell...

If you're driving, it's not noticeable until you come to a stop

Daily drive in Atlanta traffic so that means stop and go sometimes.

mberbic · 07-07-2018, 11:11 AM

Quote:

Originally Posted by gregmb

Daily drive in Atlanta traffic so that means stop and go sometimes.

That makes sense... I have a 80 mile commute every day through houston so I only drive the F12 on nice days with no traffic

pr0xy · 07-08-2018, 07:19 PM

Yeah, I think I'll skip the install for right now. I'm pretty satisfied with the IPE Exhaust and the sound.

I will just concentrate on addressing the front bumper after the incident this weekend.

Slimm2.0 · 07-24-2018, 10:18 AM

I also have a convertible Im thinking to put downpipes on. I have a few friends with F12 coupes and theirs sound soo bad ass. So im just wondering if there really will be an “awful” smell that would be bothersome...

BMWDriverX · 07-24-2018, 11:06 AM

I'm running gutted oem's, deleted resonators, and Eisenmann sport valve exhaust, stage 2 Mission Performance tune. The sound alone is absolutely insane. Being able to control the level of sound with the valves is priceless, and open/closed makes a huge difference in sound now. There is smell at a standstill with the windows down but not like a classic car smell, not as bad as i thought it would be. The car is just bananas now.

mberbic · 07-25-2018, 08:51 AM

Quote:

Originally Posted by SoCalM6GC

I'm running gutted oem's, deleted resonators, and Eisenmann sport valve exhaust, stage 2 Mission Performance tune. The sound alone is absolutely insane. Being able to control the level of sound with the valves is priceless, and open/closed makes a huge difference in sound now. There is smell at a standstill with the windows down but not like a classic car smell, not as bad as i thought it would be. The car is just bananas now.

Do you get any drone with the resonator delete?

BMWDriverX · 07-25-2018, 10:34 AM

Quote:

Originally Posted by mberbic

Do you get any drone with the resonator delete?

No. This car is extremely well insulated. with the windows up you don't hear much at all of what's going on outside of the car. Windows down it's not bad at all, if anything I keep chasing after making it louder but i'm good now.

mberbic · 07-25-2018, 03:04 PM

Quote:

Originally Posted by SoCalM6GC

No. This car is extremely well insulated. with the windows up you don't hear much at all of what's going on outside of the car. Windows down it's not bad at all, if anything I keep chasing after making it louder but i'm good now.

I'm in the same boat... went for gutted OEM downpipes but it's still not deep enough for me.

BMWDriverX · 07-25-2018, 03:16 PM

Quote:

Originally Posted by mberbic

I'm in the same boat... went for gutted OEM downpipes but it's still not deep enough for me.

What exhaust are you running?

jackliu0527 · 07-25-2018, 03:20 PM

is there going to be wastegate rattle if you just gutt the OEM downpipe? and what are the negatives besides rattle noise? Would any component wear faster?

BMWDriverX · 07-25-2018, 03:59 PM

Quote:

Originally Posted by jackliu0527

is there going to be wastegate rattle if you just gutt the OEM downpipe? and what are the negatives besides rattle noise? Would any component wear faster?

I have no rattle of any kind on the gutted OEM's. It actually improves turbo life since you don't have as much back pressure or heat, only when you tune for more boost you are wearing down the turbos by over-working them.

mberbic · 07-26-2018, 11:55 AM

Quote:

Originally Posted by SoCalM6GC

What exhaust are you running?

Everything is stock on my car. Managed to pick up Gutted DPs for $350 so thats the only thing done.

07-05-2018, 10:33 AM	#1
pr0xy Enlisted Member 13 Rep 47 Posts Drives: 2012 BMW M6 Convertible (F12) Join Date: Dec 2017 Location: Columbia, SC iTrader: (0)	To DP or not DP? Hello - I hope everyone had a safe 4th of July. I have a M6 convertible with 5700 miles, running the Mission Performance Stage 1 tune. I have the IPE Exhaust system, which I really like but I also have the VRSF downpipes, which I didn't install, and I had them for 7 months now. I need some assistance with deciding if I should install these. There a numerous positives, but I don't know if the positives outweigh the negatives when it comes to the excessive wastegate rattle and exhaust smell, especially since I drive with the top down, 90% of the time. Any advice would be very much appreciated. -Sebastian
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07-05-2018, 01:23 PM	#2
mberbic IG: @M6erbic 36 Rep 140 Posts Drives: F12 M6 Join Date: May 2018 Location: Houston, Tx iTrader: (0)	I put gutted factory DPs on my Convertible and the sound is incredible. Of course, I don't have any exhaust or any other mods done so I feel like it's a drastic improvement. I drive mine with the top down 100% of the time and you honestly can't smell the exhaust. One of the major downsides that i hate is the CEL since I haven't gotten around to getting a tune just yet and the car won't pass inspection due to this... I installed the DPs myself in about 4 hours, would have been much faster with an extra set of hands and if I read all the instructions before going through it...
	Appreciate 0 Quote

07-05-2018, 01:24 PM	#3
rsuhandy Lieutenant 111 Rep 433 Posts Drives: F06 M6;E92 M3;E85 Z4M; 958 SEH Join Date: Oct 2017 Location: San Diego iTrader: (7)	I'm sure you've realized this, but it all comes down to whether you want Stage 2 and want more power. If you haven't already, I would suggest driving a car that is catless and decide if you can live with it; preferably a convertible in your case.
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07-05-2018, 02:32 PM	#4
Jesse E93 Private 15 Rep 93 Posts Drives: 2009 335i E93 Join Date: Mar 2014 Location: socal iTrader: (0)	I installed DP’s for 2 days. I loved the power and exhaust note but I couldn’t daily it so I took mine off. A nice flash is plenty without your clutches burning ASAP.
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07-05-2018, 05:15 PM	#5
mastatikle Lieutenant 69 Rep 469 Posts Drives: m3 Join Date: Aug 2017 Location: CA iTrader: (0)	I drive a gran coupe with no cats, no mufflers, and no resonators. With the windows up it’s no noticeable at all. The smell is only there if I’m revving at a stand still or in a confined space. I am also on a custom tune. Aside from the power the turbo whistle was worth it alone. People have pulled next to me and asked if it was a diesel lol
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07-05-2018, 10:59 PM	#6
Flying Ace Lieutenant General 4985 Rep 11,891 Posts Drives: G05 45e, 997.1 & 991.1 GT3s Join Date: Jul 2014 Location: SF, CA iTrader: (5)	A catless convertible? That pretty much ensures you drive it with top up every time __________________ 22 Phytonic/Coffee X5 45e (CoVID-free) 08 Speed Yellow 911 GT3 Sharkwerks 12 AW/Cinnamon X5d Sports Pkg (retired) 14 AW/Beige M6GC ZCP, MPE, V2 steering wheel, vorsteiner (retired) 08 SSII/Black E90 M3 (retired)
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07-06-2018, 08:06 PM	#7
pr0xy Enlisted Member 13 Rep 47 Posts Drives: 2012 BMW M6 Convertible (F12) Join Date: Dec 2017 Location: Columbia, SC iTrader: (0)	Thanks for all the replies. Flying Ace -- yes, that is what I thought also.
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07-07-2018, 01:05 AM	#8
Mr. M6 Lieutenant 149 Rep 477 Posts Drives: M6 Join Date: Jan 2018 Location: Bahrain iTrader: (0) Garage List 2014 BMW M6 F06 [9.25]	i have AMS catless dp, smell is there out side only, wastage rattle at 1000-1300 rpm... __________________
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07-07-2018, 10:40 AM	#10
mberbic IG: @M6erbic 36 Rep 140 Posts Drives: F12 M6 Join Date: May 2018 Location: Houston, Tx iTrader: (0)	If you're in standstill traffic I would understand being bothered by the smell... If you're driving, it's not noticeable until you come to a stop
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07-08-2018, 07:19 PM	#13
pr0xy Enlisted Member 13 Rep 47 Posts Drives: 2012 BMW M6 Convertible (F12) Join Date: Dec 2017 Location: Columbia, SC iTrader: (0)	Yeah, I think I'll skip the install for right now. I'm pretty satisfied with the IPE Exhaust and the sound. I will just concentrate on addressing the front bumper after the incident this weekend.
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07-24-2018, 10:18 AM	#14
Slimm2.0 Private First Class 20 Rep 116 Posts Drives: F13 Join Date: Feb 2018 Location: NYC iTrader: (0)	I also have a convertible Im thinking to put downpipes on. I have a few friends with F12 coupes and theirs sound soo bad ass. So im just wondering if there really will be an “awful” smell that would be bothersome...
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07-24-2018, 11:06 AM	#15
BMWDriverX Captain 366 Rep 804 Posts Drives: G12 750i X-Drive Join Date: Jul 2017 Location: CA iTrader: (1)	I'm running gutted oem's, deleted resonators, and Eisenmann sport valve exhaust, stage 2 Mission Performance tune. The sound alone is absolutely insane. Being able to control the level of sound with the valves is priceless, and open/closed makes a huge difference in sound now. There is smell at a standstill with the windows down but not like a classic car smell, not as bad as i thought it would be. The car is just bananas now.
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07-25-2018, 03:20 PM	#20
jackliu0527 Second Lieutenant 29 Rep 264 Posts Drives: BMW 650iXdrive GC Join Date: May 2017 Location: Toronto iTrader: (0)	is there going to be wastegate rattle if you just gutt the OEM downpipe? and what are the negatives besides rattle noise? Would any component wear faster?
	Appreciate 0 Quote