Subaru STI DCCD And SI Drive Explained - The SIMPLEST Explanation!

Рет қаралды 17,280

Күн бұрын

Product Links!
Instagram: @chrisvuono
Obsessed Garage: bit.ly/2LtofVq
Car Wash Stuff:
Jescar Powerlock: amzn.to/2Pwg2Tx
Collinite 845: amzn.to/2ooGN18
Adams Wheel Cleaner: amzn.to/2nMxjwq
Adams Rubber and Tire Cleaner: amzn.to/2ozJhdp
Adams Car Wash Soap: amzn.to/2pkzqIi
Adams Window Cleaner: amzn.to/2MLwlZE
Adams Interior Cleaner: amzn.to/2MieCtZ
Adams VRT: amzn.to/3PJ9ZaH
Adams Tire Applicator: amzn.to/2piasJz
Koch Chemie GSF: amzn.to/3vAyi1r
P&S Beadmaker: amzn.to/2VHLFuJ
P&S Interior Cleaner: amzn.to/2WLpgOH
P&S Brake Buster (wheel cleaner): amzn.to/3mlAqDV
Sonax Alcantara Cleaner: amzn.to/2VDrkaT
EZ Detail Brush: amzn.to/2Bedq4t
Tuff Shine Brush: amzn.to/2Mh3VYz
Lug Nut/Brake Brush: amzn.to/2MLx0u6
Adams Buckets: amzn.to/35C42Wo
MTM M407 PW Gun: amzn.to/35CXZkv
MTM PF22 Foam Canon: amzn.to/3JegyyV
Clear Spray Bottles: amzn.to/3d1y34L
Maxshine M21 Polisher: amzn.to/3BnV0Pb
Polishing Pads: amzn.to/2Y4d2kj
Dramm Hose Valve: amzn.to/2VbqnGO
Hose Quick Disconnects: amzn.to/3hQFnn8
Gtechniq CSl and Exo: amzn.to/2QdfCkp
Applicators pads: amzn.to/3bPJoHX
Applicator: amzn.to/3bXhr0L
Car Stuff:
Bosch icon 26a Wiper: amzn.to/3bGn2pR
Bosch icon 16a Wiper: amzn.to/2OSuuEf
Perrin Reverse Lockout: amzn.to/2wNuqiZ
Perrin Radiator Shroud: amzn.to/2TkLC75
Perrin Boost Control Cover: amzn.to/2T27vcz
Perrin Belt Cover: amzn.to/3adXVsX
Perrin Strut Bar: amzn.to/2Vun5PB
Perrin Battery Tie Down: amzn.to/32ulc7h
Perrin Brake Master Cylinder Reservoir Cover: amzn.to/2I09HLd
Kartboy Short Shifter: amzn.to/3biabPc
Kicker speakers: amzn.to/2ys26UI
Kicker tweeters: amzn.to/2WQ6WEu
Kicker subwoofer: amzn.to/2A2KGOI
Idoing headunit: s.click.aliexpress.com/e/_d7q...
Carlinkit CarPlay (wireless carplay): s.click.aliexpress.com/e/_dY1...
Turbosmart Kompact bpv: ebay.us/13Dys1
F1 Fog Light: amzn.to/3hewSC8
2015-2017 Front lip: ebay.to/2Vk2BYO
2018-2020 Front lip: ebay.to/37mHeeZ
Side Skirts: ebay.to/3qktHwY
Rear Spats: ebay.to/3odfCQh
Carbon creations diffuser: ebay.us/xWXwYS
Carbon spats: ebay.us/VKyo0O
Carbon Fiber Front Lip: ebay.us/Mkbayl
Carbon Fiber Side Skirts: ebay.us/xXp6s2
Uniden R7: amzn.to/325E9yg
Uniden DFR7 Radar: amzn.to/2UDCz3a
Mirror Mount and Mirror Tap: amzn.to/2UFT9iQ
Garage Stuff:
Husky Work Bench: amzn.to/2PwxJSp
Cabinets (black): amzn.to/3cfGfir
What I use to dry my car: amzn.to/2uzSVj0
LED Lighting: amzn.to/2Te9HfK
Pressure Washer: amzn.to/346sdOe
Edifier R1850DB Speakers: amzn.to/3cOD9RI
Polk PSW10 Sub: amzn.to/2XfiXDT
Wera Screwdriver: amzn.to/2YFw5mT
LED Hood Light: amzn.to/3z40afZ
Camera Gear:
Sony ZV1: amzn.to/3Mz2B0w
Deity Mic: amzn.to/3CrT1ri
Cage: amzn.to/35EPSso
Wide Angle Lens: amzn.to/3CtKKn4

Пікірлер: 55

@CosineHyperbolic Жыл бұрын

This was actually a better explanation than most, but I will say there was still an extremely common misconception about the technical details- regarding power (torque) distribution: The DCCD does *not* adjust power (torque) front/rear- this misunderstanding is more common than the truth, so I don't blame anyone for it. If you first gain an understanding of the difference between how differentials and solid axles transmit torque, understanding the DCCD becomes easy: It's simply an open differential that is capable of locking from 0-100% (becoming effectively a solid axle)- so for anyone struggling, or who really wants to gain a complete understanding, I recommend starting there. But anyway, what's happening is, when the center differential is open (0% lockup), the torque split is nominal (35:65 through 2005, 41:59 onward). When it's locked, torque will go wherever it can, be it 0:100 (effectively RWD) or 100:0 (effectively FWD)- imagine the front or rear of the car being on ice and the opposite having full grip, the gripping side will receive ~100% of torque, whichever side that is (because the entire output, front and rear, rotates as one cohesive unit). What does it do when it's locked up only X%? Well, good luck wrapping your brain around that. Instead, I recommend simply thinking about it like this: Locking to 100% will result in understeer but maximum grip, where open/0% will induce no understeer and in fact will induce oversteer on acceleration via the rear nominal torque split- where anything in between is a compromise between those two extremes, leaning one way or the other. My only "criticism" in practice would be, in my opinion, holding the VDC button to reach "VDC OFF Mode" is better for having fun than the middle mode with the green light ("Traction Mode"). All we have is a brief paragraph from the manual on what that middle mode does, but it's capable of cutting power and activating brakes, so not likely to be desirable.

@Scoobyfreak86 Жыл бұрын

Thanks for the very detailed breakdown! I appreciate it.

@CosineHyperbolic Жыл бұрын

@@Scoobyfreak86 Thanks! Just figured I'd tie up loose ends, but otherwise your explanation was one of the most useful I've seen for people just trying to drive the car with some context to help them make educated decisions- good work! 👍

@mariochita9631 Жыл бұрын

Thank you for this I’m new to this platform but been watching a little over a year of your ownership of the sti

@calstri Жыл бұрын

I’ve been wondering about this for so long. Thank you

@ThatwhiteSTI Жыл бұрын

I've used both of these features and I do gotta say, when I drove down to NC I had most of the power to the rear and it was so fun, especially in sport sharp, the car felt so alive, and more enjoyable. Also I think you convinced me to get some Alcantara from the guy you use, it's so clean and looks nice! Also those seats since you can get them with the heating feature!

@xxraverxxonxtacy Жыл бұрын

When I had my GVB Sti I really never did messed with manual diff settings. Only did auto + in the rain/wet conditions and auto - for hooning/spirited drives along with Traction Ctrl Off completely 😎

@fang4524 11 ай бұрын

No matter what setting you are on. It’s always 41/59. The auto + of - simply changes the Front and rear diff activation sensitivity.

@David-vn3mi 4 ай бұрын

one of the best explanations 👍🏼

@Nublard Жыл бұрын

Just got my 2018 Sti thanks!

@vstillman1 6 ай бұрын

Big help. Thanks a lot

@vinnmiottoo3355 Жыл бұрын

good video man, really helped, also another note for whoever sees this my engine light was on and i was stuck in sport (s), don’t know why but that’s just how the car rolls. I had to figure that out first week myself and it was really confusing so just giving you all a heads up

@moisessolano4604 4 ай бұрын

Sometimes you might need oil, happened to my friend where the check engine light came on and it was stuck on sport mode, car was low on oil and the dealer did an oil change and fixed it 🤝🏻

@jdstark24 Жыл бұрын

My 2017 is totally stock and it usually gets to 17.9psi absolute max in Sport. Once I got 18.6 in Sport#. Just my two cents!

@inukist5296 Жыл бұрын

Didn’t know we had trac mode I’ll give it a shot

@moe-df9qx Жыл бұрын

kewl video but beaides donuts and fun sttuff for that diff lock what logically would that meed to be used for and i roll around with my trac controller alwayz completly off 🤓 all times

@aho3916 Жыл бұрын

This is very interesting to me now that I have had my Sti for 2+ years and 16K+ miles later. I just clicked on manual for the first time and it was set to the Lock position. I’m assuming since it was always in auto, the differential is not affected unless it’s in manual?

@Scoobyfreak86 Жыл бұрын

Yes, it would only be in the lock position if it was in manual.

@Theskyhigh1994 Ай бұрын

When playing with these settings should you be stopped in neutral or is it ok to put it in sport / sport sharp while driving ?

@Scoobyfreak86 Ай бұрын

You can change while driving

@Subiedoo141 Жыл бұрын

How can we reset it back to factory settings?

@fang4524 11 ай бұрын

I reached 18 PSI boost when my 2020 STI was stock.

@kreevey33 Жыл бұрын

Lol. Get into the car and instant muscle memory. Start flippin switches and hittin buttons like a pilot

@donAKAthedonjp Жыл бұрын

Off topic, how often should you clean the air filter for the redline intake?

@Scoobyfreak86 Жыл бұрын

Depends what kind of environment you drive in but I would check it every 5-10k or so.

@donAKAthedonjp Жыл бұрын

@@Scoobyfreak86 ok cool. I've been a little paranoid about it. Thanks.

@luckyleon6134 Жыл бұрын

Where did you buy that SI DRIVE CAP?

@Scoobyfreak86 Жыл бұрын

It’s by Perrin which has since been discontinued.

@colingiles4251 Жыл бұрын

Doesn’t the SI-Drive Controller on a stock STI just change the throttle mapping curve? I thought you needed to tune it to vary boost levels.

@Scoobyfreak86 Жыл бұрын

doesn't change mapping at all. It changes the throttle sensitivity and input and boost levels. The mapping is exactly the same.

@colingiles4251 Жыл бұрын

@@Scoobyfreak86 I think we’re talking the same thing with throttle sensitivity/mapping, just with different words for it. Basically intelligent has a linear throttle while Sport and Sport# are more aggressive. But the variable boost levels is news to me. I’ve heard of it on modified STIs but I’m new to the platform myself. Picking mine up on Saturday actually!

@spilibali Жыл бұрын

I'm pretty sure all SI-drive does is change throttle sensitivity. All modes still open the throttle to 100% and the target boost levels are all the same in the stock form too.

@colingiles4251 Жыл бұрын

@@spilibali that’s what I thought

@Scoobyfreak86 Жыл бұрын

Intelligent mode actually does reduce boost. Sport and sport# actually is the same boost level upon further research.

@supertreme5559 Жыл бұрын

you have to adjust your handbrake. it shouldnt be that high up. should hold your car still in 1-2 clicks in your garage

@crzdori Жыл бұрын

That's weird (3:09), my SI-DRIVE stays on [I] mode regardless of ignition cycle, it only reverts to [S] if I was driving S#.

@jonathanb1987 Жыл бұрын

That is correct. He never drives in intelligent mode so he probably didn't really notice it. I use I mode when I get into stop and go traffic and/or going to the gate on and off base.

@crzdori Жыл бұрын

@@jonathanb1987 thats good, I thought I needed to take mine to get it checked out!!

@jonathanb1987 Жыл бұрын

@@crzdori nope. All good to go.

@avee1711 Жыл бұрын

I have a 2021 sti and mine also always stays on I mode (which is my preffered mode) when i turn the car off/on

@thatharbik6478 Жыл бұрын

When I use lock my center diff and I drive slow (reverse, slow turns, go up driveways) with the diff locked, it makes a clunky noise and popping nose, shaking my entire car. Anyone have the same outcomes? I have a 2020 sti

@jonathanb1987 Жыл бұрын

That's because all of the diffs are locked. The wheels turn at different speeds naturally. During a turn, the outside wheel needs to cover more distance than the inside wheel. When the diff unlocked it can do this naturally. When you lock the diff the inside wheel is trying to spin at the same speed as the outside wheel. On a dry or paved or dry surface the gears inside the diff will grind when locked. This is what hurts your diff. While locked on a slippery surface like gravel or snow the inside wheel will be able to slip a bit while still matching the outside wheel's speed which will not harm the diff. To sum it up, DO NOT full lock your differentials on paved or dry surfaces. The only time that you would lock the diffs is on a gravel road or a gravel road covered in snow. Here is an old but easily understandable video explaining how a differential works. kzfaq.info/get/bejne/r79xqppqmJ6ah30.html

@SuperJackster98 Жыл бұрын

Your driveline is completely locked and should only be driven straight ideally as turning will cause drivetrain binding, happens to trucks and suvs while in 4 Lo if you’re locking the diff the drivetrain isn’t able to account for differences in wheel speed while turning

@jonathanb1987 Жыл бұрын

@@SuperJackster98 exactly.

@totaleclipse05 Жыл бұрын

Only lock the diff on gravel or snow (slippery surfaces) unless you like to buy new differentials all the time.

@yaffajaff Жыл бұрын

Selecting "lock" when manually adjusting the DCCD will only lock the center diff. The front and rear diffs will remain LSD regardless of the DCCD setting. DO NOT lock the center diff for daily driving. It will bind and prematurely wear the transmission, especially on cornering. Locking the center diff should only ever be considered when on extremely loose surfaces (such as snow) to split the torque 50/50 F/R

@hcolin4165 Жыл бұрын

Koo!

@andrewweisse4598 Жыл бұрын

Thank You once again! Another great video, yeah. Love CDiff Auto - (minus) and getting to love 2 add to press trac ctrl once too. All of course in S# mode. U R THE BEST ScoobyFreak86! -SubaruStiAndrew54115. 🏎️🔥👍😊