Thank you everyone that commented but please watch the video from the start to finish. Because most y’all are stating that I didn’t say things that I actually said in the video please and thank you
SonicTuned wrote up a detailed explanation of why we don't need them. Apparently AMS no longer feels we need them. I have the HKS and find the drivability better running them. Z1 recommends them as well. FYI I run 24 PSI with my Pure Stage 2 turbos. SonicTuned wrote: "I see a lot of questions lately concerning blowoff valves for these cars. The simple and short answer is, they don’t work. Here’s why: A typical turbo car, let’s say the GTR for instance, uses mechanical wastegates and recirculating blowoff valves to reduce boost when letting off the gas and sometimes between shifts. Whenever you see a GTR using a standard VTA (vent to atmosphere) blow off valve, you’ll find the car has been converted to speed density. It doesn’t use filter maf signals for fueling but a volumetric efficiency(VE)table precisely tuned by your tuner which doesn’t monitor active airflow but uses other calculations for proper engine fueling. A recirculating blowoff valve is REQUIRED when used in a system that places the MASS AIR FLOW SENSOR(MAF) in front of the valves(which is how most systems are setup). A recirculating valve relieves pressure but doesn’t “waste” the airflow simply recirculates and pumps it back into the intake tract POST MAF) The reason for this is the MAF pre-fuels the engine which means ANY AIR passing by the MAF has to go into the engine. If it doesn’t, the ecu still adds fuel for that amount of air going into the engine. Extra fuel/less air= rich dips in air fuel. This won’t blow your engine up but it will cause your drivability to suffer and things like your spark plugs/AF sensors to degrade/fowl over time. The VR30 ECU’s logic is much different than the GTRs and other older systems. It uses the electronic wastegates and throttle bodies to limit/decrease boost. When you let off the gas, instead of relying on a recirculating blowoff valve (which is what it would need being that is a MAF car) to reduce spikes, it completely opens the wastegates and momentarily holds the throttle bodies open(sometimes up to 0.25 seconds) to give the small turbos time to slow down through exhaust turbine pressure relief NOT compressor pressure relief. The two main reasons the VTA BOVs DONT work on these cars is because they are not currently able to be tuned in speed density and even after adding them, any pressure spikes you think you might be limiting, aren’t limited enough or even at all to make a difference in extending the turbo life due to the throttle body logic and how it hesitates closing once more than stock boost is added to the car. In order for blow off valves to work, the valve has to be subjected to a positive pressure to vacuum condition to suck the piston up into the head of the BOV to allow air to escape the bottom portion of the valve. The throttle body logic limits this transaction completely and you end up with a small double spike every time. I have taken back to back logs and if I posted the boost pressure spikes after letting off the throttle, no one (including myself) would be able to tell you which log did and didn’t have the BOVs. The throttle let off spiking remained almost identical. This is something built into the logic that has yet to be(or able to be) solved by ECUTEK."
Here's the thing. Your car will fail if you beat on it all day everyday. It doesn't matter if its built for racing or not, you beat your car, any car will break.
not necessarily true as long as you take care of your car, I beat on my HR G35 daily and it was insanely reliable, sold it at 180k miles with still no issues
@@DertyMike My dad has an original 1989 Toyota 5MT pickup truck original transmission, engine and everything except for clutch. So many miles on the truck the odometer stopped at 346k miles like 14 years ago. Super reliable
My Q is my daily. I wont be boosting anymore than what the car came with. You hit the nail on the head when you said this "IS NOT" a racing engine. Thanks man super informative.
The term "Racing engine" is very ambiguous, it could mean anything. However manufacturers are notorious for very conservative tuning on boosted engines for the mass market. A JB4 or tune will unlock some of that power. Of course its important not to over do it or stress components past their safe limits.
Bottom line is it’s not gonna hurt you so if you want them get them !!! Tuners saying you don’t need them is just that … They aren’t saying it will cause any failures and I think a lot people are confused on that … good content boost ! 💯
Great video Boost! I appreciate that your comment on these cars not needing the BOV unless upgrades on the turbo boost are done! Still a savvy build on you DIY video!!👍
Boost, thank you for the info and opinion. Personally I am on the fence to add blow-off valves. I love my 16 Q50. 110,000 miles and still running strong. Hopefully that trend will continue.
Great explanation, Boost!! Yeah, from the reading I've done our electronically controlled waste gates react extremely quickly and do a great job of controlling boost pressures in the system. The VR30 ecu is very powerful and keeps a sharp eye on safety parameters. The turbo failures have mostly been attributed to seal failures or ignoring oil change needs. The HKS BOVs sound great but for me they just aren't worth adding a new point of failure for the money and risk involved which makes me sad because I love the noise they make. Thank you for everything you do for the community!
Boost, love this video. I agree with your pro's and con's 💯 you were spot on with the needs for bov's. I'm just happy my car runs off MAP sensors, and it came with two large bypass valves. I just had to do the VTA mod to get the BOV sound ALL turbo cars NEED lol. I think I spent $5 on the bar stool caps, and hose clamps altogether. Great job on piecing together what's needed to have a working bov system as well. I hope the community appreciate what you've done to have this mod because not all tuners makes what's needed...but they have you!
People's eyes glaze over when they think about the psst sound. It overides facts and professional advice were people turn into zombies and walk around, I want blowoff valves, give me blowoff valves.
@@johninnh4880I’m adding the HKS on my 2017 Q60 RS as well I just wonder if it’s necessary to get it tuned after adding them. Everything else is OEM, have you gotten it tuned or done anything to it by a chance just wondering!!?
@@spleafplayzyt8078 If I was going to do it over again I would not get BOV's. I've sold it and now have an Audi RS5. No need to get it tuned for just BOV's. IMHO
This was actually something I was considering doing so thanks for addressing it! I’m new to modifications and my q50 is only my second vehicle that I’ve done any considerable work on.
I meannn ehhhh, blow off vavles, intercooler kit, and a radiator with some intakes will stop your heating issues but those turbos will have to go regardless
Throttle bodies don't fully close in this auto transmission like other manual transmission vehicles. Secondly, these cars have an electronic ECM controlled turbo wastegate/s, not spring controlled, where a tuner that has his/her shit together then they make all the required adjustment/calibrations so that the wastegate/s function properly to negate the negatives of turbo wear and added pressure buildup flowing backwards to the intercoolers and turbo/s. Talk to your tuner Hussain where he and AMS are not big supporters of blowoff valves unless a specially built, super high hp application designed to need/utilize blowoff valves. Also, you state Infiniti didn't put blowoff valves in the 300hp car because lower psi but you forget there's a Redsport that hits 14.5-15 psi without blowoff valves. These cars VR30 are not super high hp at 18 to 20 psi. Also, to add, the only way Ecutek described to me when I called them in 2020, their company across the ocean, my representative told me the only way he'd run blowoff valves on a Infiniti VR30 motor would be if there was an option for recirculating blowoff valve system. Otherwise, he said he'd steer clear. In my somewhat educated opinion and from talking to AMS and Hussain at Racebox who I'm tuned with, they say the main use of blowoff valve on this car platform, it's for that noise.
Per boosted motion...To increase turbo longevity when tuned...that's miss-information and for un-informed VR30 owners who don't know any better, sends a signal I better get this kit. Z1 pushes BV's because they sell them. Who in their right mind would say negative things or say you don't need them about a product they make money on which adds to their income? Lots of misinformation on the internet.
I have hks bov on and after a while the check engine light came on. They were installed professionally but when I’m going from 70mph-80-mph the car jerks heavily and I’ll hear like some pops, I’m not tuned only jb4. Took it to the dealer and they wouldn’t even touch it
I'm thinking about putting these on my stock 2018 Luxe. I plan on adding a cat back exhaust and some minor upgrades to increase HP on mine (maybe bumping up 100hp in the end) I'm not racing the car, its a daily driver but I really am afraid of the expense of replacing turbochargers. Seems like between 30k and 50k they are being replaced on a ridiculous scale, Which in my opinion appears to be a BAD design. I think its B.S. that Nissan/Infiniti is ok with their consumers blowing 4k-5k in repairs on this issue alone every 50k miles. I'm a DIY mechanic and have yet to find a detailed video on how to replace both turbo's on my car if I need to in the future, so If you know of any please let me know, so I can prepare myself LOL. Anyway Boost, sorry for this long post but when you have time please read the following post from a reply I read on another RU-vid video concerning these blow-off valves on the 3.0L Twin Turbo platform...Love to hear your thoughts and or anyone else's too. Thanks! "Blow off valves on a 3.0 Q50/Q60: I see a lot of questions lately concerning blowoff valves for these cars. The simple and short answer is, they don’t work. Here’s why: A typical turbo car, let’s say the GTR for instance, uses mechanical wastegates and recirculating blowoff valves to reduce boost when letting off the gas and sometimes between shifts. Whenever you see a GTR using a standard VTA (vent to atmosphere) blow off valve, you’ll find the car has been converted to speed density. It doesn’t use filter maf signals for fueling but a volumetric efficiency(VE)table precisely tuned by your tuner which doesn’t monitor active airflow but uses other calculations for proper engine fueling. A recirculating blowoff valve is REQUIRED when used in a system that places the MASS AIR FLOW SENSOR(MAF) in front of the valves(which is how most systems are setup). A recirculating valve relieves pressure but doesn’t “waste” the airflow simply recirculates and pumps it back into the intake tract POST MAF) The reason for this is the MAF pre-fuels the engine which means ANY AIR passing by the MAF has to go into the engine. If it doesn’t, the ecu still adds fuel for that amount of air going into the engine. Extra fuel/less air= rich dips in air fuel. This won’t blow your engine up but it will cause your drivability to suffer and things like your spark plugs/AF sensors to degrade/foul over time. The VR30 ECU’s logic is much different than the GTRs and other older systems. It uses the electronic wastegates and throttle bodies to limit/decrease boost. When you let off the gas, instead of relying on a recirculating blowoff valve (which is what it would need being that is a MAF car) to reduce spikes, it completely opens the wastegates and momentarily holds the throttle bodies open(sometimes up to 0.25 seconds) to give the small turbos time to slow down through exhaust turbine pressure relief NOT compressor pressure relief. The two main reasons the VTA BOVs DONT work on these cars is because they are not currently able to be tuned in speed density and even after adding them, any pressure spikes you think you might be limiting, aren’t limited enough or even at all to make a difference in extending the turbo life due to the throttle body logic and how it hesitates closing once more than stock boost is added to the car. In order for blow off valves to work, the valve has to be subjected to a positive pressure to vacuum condition to suck the piston up into the head of the BOV to allow air to escape the bottom portion of the valve. The throttle body logic limits this transaction completely and you end up with a small double spike every time. I have taken back to back logs and if I posted the boost pressure spikes after letting off the throttle, no one (including myself) would be able to tell you which log did and didn’t have the BOVs. The throttle let off spiking remained almost identical. This is something built into the logic that has yet to be(or able to be) solved by ECUTEK."
@@A-B18 Yes. I installed the version 1 AMS heat exchanger and it's a night and day difference. You don't get any more heatsoak and the power comes on much more consistently
true, but you don’t really need them unless you’re planning on running some high numbers. if you’re planning on staying stock or semi-stock’ish, you don’t really need them. there’s a reason why Infiniti didn’t put BOV’s on these engines
90% of the time bov are not needed on any car however you may need to upgrade the stock bypass valve to hold more boost on cars that have them (usually anything over 23-27psi from what ive seen) also very infomative video thank you for making this content.
When adding bov on stock tune vr30 the computer struggles trying to keep ambulance fuel mixture bov keep throwing that off so the computer is doing its best by compensating
What if it uses a JB4? Would the bov help compensate for the slightly higher boost? Curious since the tune is just plug and play and manipulates ECU boost control signals and not the ECU manifold boost reference.
Hey Bro how you doing bro I like your videos I was listening to a lot of the stuff you were saying about that blow off valve so I have a question a couple of questions for you if I am planning to add horsepower to my vehicle such as the heat exchanger, the coolant expansion tank, I'm also planning to go with the ark exhaust system next, I'm also going with the race downpipe with the struts bar on the engine would that be safe to also get the blow off valve because I plan to also turn off the car but I have the car under warranty for six more years cuz I had just bought it it's a tween turbo V6 Sport Plus package but I was planning to tune it after the warranty but I also have a secondary vehicle as my daily this one I'm just like you know using the Q50 as my project car so let me know what you think I'll be waiting for your response thank you bro is she going on my page you will see my Q50 I only have one video of it I haven't really put anything out yet
When I get mine. I’m getting the AMS stage 2 kit (heat exchanger, CAI, ECUtech). The kit doesn’t state the change in psi from the ecuteck tune, but it also doesn’t recommend a blowoff valve either. I like the sound of blowoff valves and they are definitely important, so should I still get em installed after the kit is installed??
Your dogs are ugly, shut up they’d probably bite me but they still ugly & your car would still get gapped by that ugly engine bay 🦦 & you’re not smoking Zaza ! Looks more like a rats nest then the engine bay 🥱 Edit: I think your dogs died by now. Now they just ugly dead dogs 😂😂😂
