2021.11.26 19:45 DaHarries Back pressure on a turbocharged car.
Right so possibly not the right place for this but I'm a mechanic by trade and I don't see anywhere else to ask this with mechanics present.
Most modern cars utilise turbos for Performance In the ever tightening emissions environment.
Working at a main dealer I see plenty of 'tuned' varieties of said turbocharged engines and our in house master tech always goes mad that they're done wrong as having a straight pipe on one of said vehicles reduces the back pressure to basically ambient pressure which is bad... However he never elaborates much more...
My logic was a straight pipe/low/0 back pressure exhaust is good as the more gas you can expell faster with less resistance equals better turbine performance overall and possibly increased turbine 'acceleration'.
My dad (also a mechanic) states he can understand the back pressure argument as without adequate back pressure the 'scavenge' intake/exhaust overlap causes more air to exit the combustion chamber therefore reducing cylinder pressure and you're making less power than you would with back pressure reducing exhaust escape velocity. This argument is based on the fact that his supercharged V8 from years since passed runs a 'limited edition' line of camshaft that totally eliminates valve overlap due to the above reason.
So I ask you mechanics of this thread. What is your understanding/opinion on this matter.
Also anyone feel free to ask any questions about the above if you want to learn more.
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2021.11.26 19:45 thatawkwardmoment8 Does anyone have a graph/know in general who gained the most followers this season?
I noticed looking at Danielle’s likes , after the Halloween episode/ the win , her engagement on Instagram has increased significantly .
Does anyone know how many followers all the pros/contestants started off with , and who gained the most/least throughout ?
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2021.11.26 19:45 assagitaz Chris Sterio & Alberto Sainz - On the Way Up [3rd Avenue]
Publisher: 3rd Avenue
Out Date: 2021-11-25
Quality: MP3 18.47 Mb / AIFF 81.34 Mb
Genre: Progressive House
Chris Sterio & Alberto Sainz - On the Way Up / (Key Em, BPM 112, Length 7:41)
DOWNLOAD - https://progonlymusic.com/index.php?route=release/release&release_id=508873
submitted by assagitaz to progonlydj [link] [comments]
2021.11.26 19:45 Dependent-Decision94 How devoted are you to her? Go into detail as far as what you would do to the Goddess
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2021.11.26 19:45 OrganizationLeft709 Remember son, dying is gay Last Breath meme
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2021.11.26 19:45 Worldly-Cattle700 ??
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2021.11.26 19:45 Pucca124 Dimensions
Here's my doubt: I'm a tall guy, 195 cm btw, and I just started studying bass a few weeks ago. I bought a Squier Affinity Precision PJ (one Jazz pickup and two different other pickups), and playing it, it does feel like I'm holding a big guitar, i mean: Bass is surely a longer guitar with 4 (usually) strings that plays lower tones, but watching some videos about other bass players (like Davie504, he should be 200cm tall if he wasn't trolling and we are both Italians lmao) I was thinking that maybe my bass is a little bit smaller than others. Also counting the little dots on the keyboard, i did notice that my bass series has two points lesser than the other brand basses, and by the way also the frets number is lesser. Is my bass good for starting or is it a strange variation one? (Like the one with 5 or 6 strings I mean). Thanks in advance.
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2021.11.26 19:45 jmanorm I asked my friend to do a Kanye coaster
2021.11.26 19:45 JayEl2 Something feels off.
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2021.11.26 19:45 thats-my-marmalade Upping my Prozac
My doctor is going to increase my dosage and I’m really nervous about getting n from it. I haven’t had a problem with it before but I’m freaking out that I will now. :(
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2021.11.26 19:45 ItsWilliamDude Picked up some Arrow and Criterion titles at my local Barnes and Noble.
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2021.11.26 19:45 aspoonfulofalli Random bouts of fear.
7 months out from dday 1, and my WS is communicative, doing everything right, there are more good days than bad, and nothing suspicious has occurred but yet he’s on his way home from work today (we live separately right now) and I’m having a mini anxiety attack because I’m scared he’s lying to me again. Gut feeling is he’s not but I’m having troubles bringing myself down.
Does this ever happen to anyone else? If so, anything that you do to help? I don’t want to track his movements and he’s always consistent about letting me know without it feeling like I’m policing him.
It’s so fun experiencing trauma.
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2021.11.26 19:45 tkepongo Recommended retailer for cards? Trying to find some boosters for my kids Christmas but GameStop and Amazon is out of stock
2021.11.26 19:45 justiinelife songs that make me feel like i'm floating
2021.11.26 19:45 GladiatorMax Hell let loose clip compilation 3
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2021.11.26 19:45 thegreatrodent Potentially lost cat near Hilltop Child Development Center (Sorry for terrible quality, he/she got spooked when i rolled down the window) Grey striped tabby, looked young and slender, no collar.
2021.11.26 19:45 flipzone MSI Katana GF66 11UC-464CA 15.6" 144Hz FHD Gaming Laptop Intel Core i5-11400H RTX3050 8GB 256GB NVMe SSD Win10 $1,049 (lowest)
2021.11.26 19:45 se20201 Uncooked Cake
2021.11.26 19:45 arr0wrooted Environment Canada issues 'red alert' for B.C. as more storms approach
2021.11.26 19:45 ACNH_Turnip_Acc [H] BDSP apricorn preorder code [W] Paypal
2021.11.26 19:45 carlosdangertaint Winter is coming…
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2021.11.26 19:45 jjds32 Tribute mga ser ka workmate ko
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2021.11.26 19:45 Throwammay The photoelectric effect - Why do we expect the electrons in Hertz experiment to have a higher kinetic energy if light is a wave?
So I'm currently reading up on the photoelectric effect. My textbook sets the scene for the problem by explaining that Hertz found out that shining light with certain wavelengths on the electrodes in his spark gap experiment created more intense sparks. Further investigating revealed that shining multiple lights on the electrodes did not increase the kinetic energy of the electrons, but instead more electrons were emitted. It then goes on to say that if light is a wave and we increase the intensity of the light, we would expect the electrons to have a higher kinetic energy. But they don't.
I don't understand why these two are at odds with one another. Why could a wave of light not also make the illuminated material emit more electrons rather than increase the energy of the ones struck? Why does this mean that light must be a particle?
submitted by Throwammay to AskPhysics [link] [comments]
2021.11.26 19:45 Mysterious-Hair-8538 Wer will meine dick sehen/ bewerten oder sehen wie ich komme Bin 1/////////4
2021.11.26 19:45 gryffindcrk Questioning gender identity
So I hope this is okay to post here but I just had a question about how people knew they weren’t gender conforming. I’ve always identified as a cisgendered female, and like I haven’t overly questioned it a ton in my life. Like I don’t have a problem with she/her pronouns, but I don’t like gendered pet names and such, like princess and all that sort of stuff and sometimes my body makes me feel weird. I’m aroace though and pretty repulsed on both ends so like I’m not sure if that’s just my repulsion speaking. Like I don’t mind being called ma’am or anything, but I don’t feel like a woman exactly. I mean gender is a construct and I don’t understand why we have a difference anyway but it’s like I’m used to she, but I also don’t have any problem with people using he or they. It doesn’t really matter in my mind, I’m just me. But I’m just confused if this is like a common thought process or not. I’m not sure if any of this made sense but it was just sorta a vent/advice seeking post, so if anyone has any advice or anything, it would be helpful. Thank you :)
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