02-13-2020, 12:09 AM | #1 |
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Simple way to decrease turbo lag?
I have a 2018 M2 with downpipe, dinan exhaust, dinan intake, charge pipe, intercooler, and bm3 tune. What's the easiest and most cost effective way to decrease turbo lag? Thanks.
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02-13-2020, 12:47 AM | #2 | |
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GFB diverter valve+ may help Adjusting the burble settings to make them last longer may help. Adding nitrous may help |
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02-13-2020, 02:23 AM | #3 |
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GFB DV+, downpipe, and inlet pipe MAY help but that's about it. Might as well get an NA car if you feel there is too much lag with a stock turbo M2.
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Current - 2018 M2 | VRSF Chargepipe | VRSF Catless Downpipe | Dinan Catback | Turner Motorsports Intake
Previous - 2016 340i M-Sport | AWE Tuning Touring Edition Exhaust w/ Non-Resonated Performance Mid Pipe | Agency Power Intake | Active Autowerke Activ-8 | VRSF Catless Downpipe |
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02-13-2020, 07:17 AM | #4 |
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Your inter cooler might introduce lag depending on which one you went with. Some are better than others
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02-13-2020, 10:01 AM | #5 |
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I put on the Wagner 1 competition ( smallest)FMIC in order to minimize lag. I have tracked the car 50 plus times and really like this set up...minimal lag. I think everyone, like Dinan is chasing the bigger is better mod but it introduces lag unless you upgrade the turbo.
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02-14-2020, 09:17 AM | #6 | |
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At a Point above 7,000 RPM.
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02-15-2020, 07:55 AM | #9 |
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02-15-2020, 08:28 AM | #10 |
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i have the race VRSF FMIC and it did end up leading to a fair bit of turbo lag but after having installed the GFB DV+ the lag issue seems to have subsided a lot! throttle response is much much improved and you get a nice whoosh when letting off the throttle.
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18 M2 6 Spd AW - VRSF DP / CP & Race FMIC, ER TIC & GFB DV+ with BM3 Stage 2 Retired 09 135 JB4 G5 ISO w/BEF, N54 Tuning Performance DPs, BMS DCI, ER Charge Pipe |
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02-15-2020, 06:09 PM | #11 |
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Thanks all. Can someone school me what the GFB DV+ actually does? How hard is it to install? Also, does it put much stress on the turbo or any other downsides?
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02-15-2020, 09:23 PM | #12 | |
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As far as I'm aware, it'd a bit of a bitch to install due it its location on the turbo. I have one sitting in my garage that my local shop is installing next week with a ton of other parts. I opted to let them due it since they were already doing other work for me. |
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02-15-2020, 09:51 PM | #13 |
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yea is a bitch to do as it sits right on the turbo.took my mechanic a solid 4 hrs but also got the turbo to IC pipe installed (which you may as well do since you're there)
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18 M2 6 Spd AW - VRSF DP / CP & Race FMIC, ER TIC & GFB DV+ with BM3 Stage 2 Retired 09 135 JB4 G5 ISO w/BEF, N54 Tuning Performance DPs, BMS DCI, ER Charge Pipe |
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02-16-2020, 06:56 AM | #14 |
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I appreciate the advice. Frustrating it's so hard to install. Will prob pass as I would have to have the shop do it and not sure I want to pay all that money. Anything else that is easier to install which might help?
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02-16-2020, 10:46 AM | #16 |
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I don't understand why people talk these up. Aren't they pneumatic, meaning they vent slower than the OEM and DV+ options. Also aren't they binary open/close, meaning they won't decrease lag as the progressive DV+ would? Also they have one single port option, which vents entirely to atmostphere, leading to increased lag. The other dual port option vents partially to atmosphere, which still leads to more lag over the OEM and DV+ option which don't vent to atmosphere at all. I may be wrong, but the turbosmart options seem catered more towards turbo sounds than actual improved performance.
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02-16-2020, 11:06 AM | #17 | |
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Hmm, it’s like everything you said was wrong, including noting the plum back model vents entirely to the atmosphere (it doesn’t) increases lag (it doesn’t) and that it’s somehow inferior to the dV+ (Some people have reported better performance when they switched from the DV+) Let’s just request logs and compare them and not just hand wave it away without any evidence Last edited by AmuroRay; 02-16-2020 at 11:22 AM.. |
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gphung193.50 |
02-16-2020, 11:53 AM | #18 | |
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02-16-2020, 12:03 PM | #19 | |
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So yes, I am being dismissive because you have zero first hand knowledge of the product, if not incorrect information and you’re speaking in definitive terms. |
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02-16-2020, 12:21 PM | #21 | |
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"Everything you said isn't true" isn't a convincing argument. I went on turbosmart's website and see that the plumb back version does divert back into the system, so I was wrong about that. Would've been a ton easier if you had just showed me instead saying "you are wrong" without that. Which was only because the last thread about this product the guy was going on about how it vents entirely to atmosphere and how the turbosmart plumb back is superior because it vents to atmosphere. Which yes, in some cases a valve that vents to atmosphere is superior, but that's only when running HUGE turbos that need to vent off massive amounts of boost immediately. Our cars do not fit that criteria. I've also emailed turbosmart for clarification about the binary venting and the actuation and got no response. The answer is simply... someone from turbosmart needs to come out and explain their products. And no the answer isn't "buy it and find out for yourself so you have first hand experience" Yes, I must also buy the tree sap acne medication so I will learn first hand that it works, instead of asking questions to become an educated consumer before putting my money places and putting questionable things on my face... smh And I really do not see how "I am speaking in definitive terms" when from the very beginning I sought clarification on the hardware of the device. I speak definitively about the effects of such hardware, but I do not speak definitely about what hardware and how the BOV operates. Go back at my posts. They have question marks at the end of my sentences. On top of the hardware clarifications I have, I am also unsure and believe the turbosmart valve will throw a CEL. The DME has set values that it reads to know the DV is functioning properly, something like the turbosmart valve is likely to confuse the system and give a CEL. The DV+ valve even can give a CEL if run in a certain configuration on the main spring. But at least the DV+ has the option to change the spring config to avoid this... turbosmart does not. Last edited by Anthony1s; 02-16-2020 at 12:28 PM.. |
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02-18-2020, 02:12 AM | #22 |
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Just wondering if you're car is DCT or manual? Manual's have a software caused delay with WOT shifts, feels like turbo lag but isn't. Fix is to hold wot to 6K+ rpm then shift.
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