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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > N20 GFB DV+ installed without moving or touching the turbo! +quick tutorial
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      09-01-2019, 12:09 AM   #199
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Quote:
Originally Posted by SMiGGs View Post
I installed mine.

No difference. The sound thats heard on most youtube videos is actually really faint in person, unless you have the hood open and you're standing there hearing it. The flutter MIGHT sound a bit louder if you have a cold air intake or a custom tune with increased boost.

In my opinion, not worth the big price. I am completely stock, this is the only mod i have done related to the engine. I have stock engine, everything. Did not feel a difference at wide open throttle or anything.

I have a boosted Corvette, and a supercharged silverado. I am well aware of power adders and bolt-ons. This mod just gives you a beefier diverter valve. I would spend the extra money on an exhaust, intake, or put it towards a tune or some cosmetic mod, i was gonna put the stock one on and get my money back, but its a pain in the ass to un-install.

Just my honest opinion. Also there is a replica of this exact part selling for 27 dollars. Exactly the same, same spring, everything. Buddy bought it, compared it to my authentic one, and they are the same, even weighed the same. Not dropping link its an overseas vendor. Makes the same faint noise mine does. Good luck.
I think this is right. For some reason right after I installed it the car felt a lot faster, but after a few days it seems to have settled down a little bit. The car definitely holds boost better though. Maybe I just got used to it
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      09-01-2019, 12:12 AM   #200
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Quote:
Originally Posted by ngl View Post
I just had my DV+ installed along with chargepipes and intercooler, so not sure what is causing my exhaust valve to stay open.

My working theory is that since the DV+ holds boost longer, the car's ECU thinks he needs to keep exhaust valve open longer also.

For now I don't mind it, exhaust sounds better, but I plan to have a catless downpipe installed soon and I would like the exhaust valve to stay closed in eco / comfort so I can leave home without waking up the entire neighborhood.
If you have a tune like BM3 this is an option you can code in.
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      09-01-2019, 12:13 AM   #201
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Quote:
Originally Posted by SMiGGs View Post
I installed mine.

No difference. The sound thats heard on most youtube videos is actually really faint in person, unless you have the hood open and you're standing there hearing it. The flutter MIGHT sound a bit louder if you have a cold air intake or a custom tune with increased boost.

In my opinion, not worth the big price. I am completely stock, this is the only mod i have done related to the engine. I have stock engine, everything. Did not feel a difference at wide open throttle or anything.

I have a boosted Corvette, and a supercharged silverado. I am well aware of power adders and bolt-ons. This mod just gives you a beefier diverter valve. I would spend the extra money on an exhaust, intake, or put it towards a tune or some cosmetic mod, i was gonna put the stock one on and get my money back, but its a pain in the ass to un-install.

Just my honest opinion. Also there is a replica of this exact part selling for 27 dollars. Exactly the same, same spring, everything. Buddy bought it, compared it to my authentic one, and they are the same, even weighed the same. Not dropping link its an overseas vendor. Makes the same faint noise mine does. Good luck.
You're missing a tune. Your car is still running stock boost so holding boost better isn't going to have nearly as much of a difference as when you're tuned.
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      09-01-2019, 12:49 AM   #202
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Quote:
Originally Posted by JP-F30 View Post
You're missing a tune. Your car is still running stock boost so holding boost better isn't going to have nearly as much of a difference as when you're tuned.
I agree with you. Im getting bm3, intake, and exhaust as well, so we will see when I get to that crossroad. Stock wise I canít say much for it though.
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      09-01-2019, 04:23 PM   #203
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I've been thinking about having these installed, I'm fully bolt on with stage 2 BM3 FMIC CP DP Remus exhaust AFE intake. But I heard this a pain in the ass to install. how much do u guys think they will charge if I have a mechanic installed them?
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      09-02-2019, 01:22 PM   #204
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Originally Posted by Craeftig View Post
I've been thinking about having these installed, I'm fully bolt on with stage 2 BM3 FMIC CP DP Remus exhaust AFE intake. But I heard this a pain in the ass to install. how much do u guys think they will charge if I have a mechanic installed them?
I've heard anything from $80 to $300

Make sure to do it at a shop you trust because there are aspects to this install which are easy to screw up
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      09-02-2019, 02:03 PM   #205
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Quote:
Originally Posted by JP-F30 View Post
Quote:
Originally Posted by Craeftig View Post
I've been thinking about having these installed, I'm fully bolt on with stage 2 BM3 FMIC CP DP Remus exhaust AFE intake. But I heard this a pain in the ass to install. how much do u guys think they will charge if I have a mechanic installed them?
I've heard anything from $80 to $300

Make sure to do it at a shop you trust because there are aspects to this install which are easy to screw up
Yeah that's what I'm worried about.
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      10-08-2019, 04:55 PM   #206
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UPDATE:

Installed a cold air intake, and the thing is loud. People turn around to see where the flutter is coming from lol.
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      10-17-2019, 08:47 AM   #207
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I read most of the post so if this has been sugested forgive me. Why don't you get a trusty stethoscope and find exactly where the flutter is coming from. If it coming from the DV+ then that is just the operation of the the DV. If it is coming more from the turbo then you could say it is coming from the turbo getting jammed from unused boost. I plan on getting one and was interested in this thread. The waist gate, on the exhaust side, electronically or vacuum controlled should be preventing this anyway as I see it.

Thanks.
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      10-17-2019, 01:21 PM   #208
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