09-27-2018, 11:52 PM | #1 |
Alexander Hartunian
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N20 Blow Off Valve Questions
So I ended up buying a GFB BV+ for my N20 328i, took me and my buddy about 2 hours to install it (very stressful). I do have to say it really does what it says, holds boost so much better, bumped up the throttle response so when I let off I can get back on almost instantly, and it is better quality.
I noticed even before I installed it, the first 5-10 seconds when I turn on the car and rev it I can hear my intake and turbo pretty loud. I love that it does that, however, it stops spooling and blowing off after 10 seconds or so of turning on the car, and after that, it won't spool and blow off in neutral or park. Only when there is a load can it build boost, I get that but why does it do it when I just start the car. Now after I installed this instead of the 'pshhh' sound I get a really nice 'stututu' when I do the revving after starting it, I also get it when at high RPMs barely. I understand it is not "supposed" to happen and I know what it is but my question is how can I make it do what it does when I start the car happen even after that 10 seconds. I basically want to know how to keep it spooling and blowing off in neutral like it does when I start the car.
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2018 F32 440i - Black Sapphire Metallic - KW Suspensions V1 | VRP Intake | VRSF Catless Downpipe | Dorch Stage 2 HPFP | MHD OTS Stage 2 E40
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09-28-2018, 09:57 AM | #2 | |
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2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
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09-28-2018, 11:12 AM | #3 | ||
Alexander Hartunian
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2018 F32 440i - Black Sapphire Metallic - KW Suspensions V1 | VRP Intake | VRSF Catless Downpipe | Dorch Stage 2 HPFP | MHD OTS Stage 2 E40
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09-28-2018, 04:21 PM | #4 |
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DME probably allows for it then. You could always sell the car and get one of those.
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2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
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09-29-2018, 07:08 PM | #5 | |
Alexander Hartunian
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2018 F32 440i - Black Sapphire Metallic - KW Suspensions V1 | VRP Intake | VRSF Catless Downpipe | Dorch Stage 2 HPFP | MHD OTS Stage 2 E40
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10-01-2018, 09:05 AM | #6 |
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I'm not sure what the feasibility of that is or if it's possible. Is there a reason you want to push boost under no load?
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2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
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10-01-2018, 09:55 AM | #7 | |
Alexander Hartunian
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10-01-2018, 10:41 AM | #8 |
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I mean, maybe but you'd have to talk to a tuner about it and they'll require you to get a custom which isn't cheap.
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2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
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328i, blow off valve, engine, flutter, gfb dv+, n20, spool, turbo |
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