How far can tuning a stock engine get you? Let's find out.

Find out how much power we can squeeze out of a perfectly stock 2000 Dodge Viper GTS Coupe by just dyno tuning it and learn about the tuning process.
You can find my socials and get in contact with me through my Tazet profile:
www.tazet.com/...
Hit up Street to Sand for custom builds, tuning, and lifts:
/ streettosandoffroad
(tell Dustin that Four Eyes sent you 😉)

[@Four_Eyes]

Have questions for me? Let's chat 👇 bit.ly/_foureyes

[@speedneeds4451]

can we chat today? We need help flashing a 2000 viper

[@aakar1s]

Dude, perfect video, you took the time to explain clearly and simply all steps taken, to gain power whilst remaining safe. Thank you so much for this. More youtubers ought to follow your style. Best of luck with your project.

[@tomstamatakos8027]

💯👍👍

[@WoodLox]

Took the words out of my mouth. Excellent detailed explanation. Appreciate that.

[@teannatrump2622]

@@WoodLox Mee too

[@mrael6304]

Thumbs up, subscribed and I turned on the bell. Very nice video.

[@XeroFailGames]

Yea this was awesome I now understand tuning much better without going all formulas and crazy math on me

[@josiahcochran8290]

This was literally the definition of a perfect KZbin video. Straight to the point, entertaining, informative and well edited. I look forward to your future videos.

[@giantpune]

He forget to beg everybody to like, subscribe, leave a comment, check out the amazon affiliate links in the description, and subscribe to him on patreon for exclusive content.

[@1theheightofparadise]

@@giantpune and the extra 10 minutes of awful camera angles and boring dialogue

[@OPBjorn]

@@giantpune Fucking this lol. God some youtubers are so annyoing. Throw in some crappy thumbnail which highlights the car (I'm looking at you tavarish) and an extremely surprised face and the title "YOU WONT BELIEVE HOW MUCH HP I GOT FROM THIS INSANE TUNE!!"

[@GOLD_FEVER]

@@OPBjorn They're catering to a "younger" audience. It's what you do when you want to make the most money. Attract the teenagers who are used to reaction videos and stupid clickbait titles.

[@katsanddoughnuts]

Came to the comments to write exactly what you wrote.

[@TheCarPassionChannel]

Perfect combination of explanations and visuals. The only small thing I noticed, as a Dragy addict myself, is I find that it's best to start at least 5mph (more if turbo) below the start point of the acceleration test, so the suspension and drivetrain can get all loaded up by the time the clock starts. Sick video and please keep it up!

[@abdulwaseer6054]

You know this video is bussin, when the miata dad is here

[@nytro8027]

I guess we can just pretend that the test was from 35-80 🤣

[@TheCarPassionChannel]

@@nytro8027 It's still going to be 99% consistent in an n/a car, but what can happen is if you try to start the pull right at the "start speed", Dragy can trigger the timer early which can give a slower overall time. Or trigger the timer while the suspension is still loading up and you could lose a fraction of a second haha

[@matthewmorgan582]

This was just for scientific purposes so it would just be another variable here. If he was actually racing that would be a good idea. Also, if it's a turbo you can use the clutch to rev up and build boost and drop it to have boost when you start.

[@TheCarPassionChannel]

@@matthewmorgan582 Not really the case with a boosted car, it just needs to be at full acceleration before the trigger speed (aka fully spooled up). Trying to do funny things like clutch kick are just going to lead to inconsistency, and how hard you demolish the clutch don't have anything to do with metering how fast the car accelerates due to an increase in power.

[@kingjasko]

as a car newbie, the explanation and visuals was perfect, even for someone like me it's clearly understandable what's going on :)

[@DrStrange1000]

Couldnt agree more!

[@sxxith]

I know absolutely nothing about tuning cars but ive learnt so much from just this simple 7 min video

[@car_pal]

Best video out there that explains ecu tuning, well spoken and well presented, i finally understand the principals of ecu tuning! love it! insane gains for n.a. btw!

[@seanmitchell2721]

yooooo carpal what you doin here?

[@charlescourtwright2229]

i understand it, but i still wouldnt do it myself, i feel like id fucking something up

[@Sephiroth5200]

Car Pal! Funny finding people you subscribe to on random channels.

[@akshayy_xd]

@@charlescourtwright2229 yeah you go to a shop lol

[@TDGCmote]

same! never got it until now.

[@XHikotheproX]

The graphical layout of each run, the detailed explanation of the process, this man even got a camera to capture a pre ignition event to show what it sounds like. Killer quality content.

[@KarrasBastomi]

Graph quality is mind blowingly good

[@Mr.Thermistor7228]

Some tool copied your comment and used it as their own

[@XHikotheproX]

@@Mr.Thermistor7228 that's fine they can be fake. I just wanted to compliment this mans work.

[@cirian75]

Very methodical, he has much experience and patience

[@Mr.Thermistor7228]

@@XHikotheproX I hear ya lol cheers bro

[@chrismathes3647]

My dad was a Porsche mechanic for 22 years, helped me swap a 351W into my 85 GT. Always, talked cars, engines, etc and this video was like everything he explained to me as a kid but in an insanely awesome video. Great job dude! 👏

[@fordxbgtfalcon]

Very nice swap. My dad and I swapped a 351w into an 84 gt. It was a lot of fun.

[@somefish9147]

@@fordxbgtfalcon do you know how much power it makes?

[@enhancedphysique6452]

99% of mechanics an techs don't know much about tuning. They may know what your looking for AFRs but not much else.

[@retrogamerdave362]

In a few minutes you explained what other guys take several hours to say. Bravo

[@chrisdooley6468]

Nice of you to explain to people how the tuning process works. I owned a first generation Viper and remember gaining 6.25/8.5% with K&N, exhaust and tune back in the day. Those V10s respond well to tuning which isn’t always the case with NA engines.

[@blainehutcherson7251]

Goes to show, esp nowadays, what can be done with simple things not all this aftermarket hoopla to get 50hp for 2k lol

[@garyvisser8987]

Dude, what is an engine? The correct answer is an air pump and anything you do to increase the air flow into the pump and out of the pump is going to make power...

[@Bamabrute85]

@@garyvisser8987 Of course. But some manufacturers do a better job of getting air in and out than others. Some cars barely benefit from simple mods like air intakes and exhaust systems.

[@P71ScrewHead]

@@Bamabrute85 so true, 2v life here..lol

[@adelaseeri768]

LS engines respond very well to tunes too, I drove a stock F-Body and I drove a F-Body with an aftermarket air intake, exhaust and tune and it was a night and day difference, 3 simple mods but it was like a different car, doing the mods without the tune would have been useless it's the tune that really woke it up.

[@MurderedQ50]

This honestly is probably the best in depth raw “tuning101” video i have ever seen. I learned more about tuning and afr, timing, fueling and more in this video alone then a hptuners tutorial video. Thank you so much!

[@richardrace237]

Very true.

[@haydona1845]

Same. I cant believe how clear it was

[@MMMMalex]

I've been trying to learn more about tuning lately and this video was super helpful. Informative yet concise while explaining several of the "why's" behind the process

[@MB3Drift]

This is the best video on ECU tuning I’ve seen, and I’ve seen a lot of them. Really precise, well explained, yet short and without any of the usual bla-bla-bla that makes it two times longer than it should have been. And still simple enough that I think I can show it to my friends that aren’t gearheads without them drifting away 😅. Seriously, perfect visuals, great explainations, now I’m ready to see how much of a monster that Viper is going to be!

[@InfamousTub]

Best dyno tune video i've ever watched man, great work. I work in an engine shop so it's great to see you explain these concepts clearly for other people to understand.

[@Dante_S550_Turbo]

More people need to take this approach when tuning cars, it's super engaging vs someone trying to entertain the audience when we can't see what's going on during a dyno run. Loved it. The benchmark

[@beansidhe4358]

You know you hit the nail when every comment is, “I feel like I genuinely learned something from this video.” I imagine someone is going to meet you in the years to come and say they watched this video in class-how it made it all make sense. Good work!

[@bri-manhunter2654]

Love these kind of videos and how it shows how much power can gained from tuning alone. . It’s a perfect example of how from the factory the timing is conservative with extra fuel to keep the motor safe.

[@DoctorMotorcycle]

Solid video, enjoyed the effort you put in to explain the whole process. Would love to see this car with ported heads and a big cam!

[@alexandertoback5553]

Hey buell dad

[@SVTVeniK]

Incredible job, man. I love the graphs and you explaining pretty much what an engine tune is and how its done. Great work

[@Four_Eyes]

thank you venik 🙏

[@SalemTechsperts]

Creators like you and videos like this are why I love KZbin. Fantastic video man.

[@valiantdiesel1332]

This is actually the perfect video. I would pay real money to watch this process with similar explanations and graphs on a heap of different cars. Seriously, this format would be just as interesting tuning a tiny 3 cylinder, or a turbodiesel, actually watching the progress of the power with the AFR is addictive to me.

[@Firemonkey94]

Excellent video! I recently had my 3v tuned and had the privilege of finding a tuner that explained every step of the way in the tuning process. Keep up the good content and greetings from South Texas!

[@Four_Eyes]

thank you julio 🙏

[@supracruza8366]

How much did you gain by tuning it I'm thinking about doing it to my 3v

[@ChefPresh]

Yea and who tuned you brutha, 07 3v here as well

[@Cherrybombgt]

who did your tuning?

[@TheMeanBean322]

This just shows how important tuning is. Almost 30 hp gain on a 100% stock car. Absolutely nuts, great video!

[@DuBstep115]

I wouldn't compare the hp figures that much since its 8L V10 and it has much to give. The 6.8% hp gain is pretty good but eliminating the torque dip is much more important and you can feel that in daily driving.

[@GAMING2S]

@Yuck Foutube 430 HP on a 8.0 V10 is nothing. 0.5 HP per 1.0L just sounds ridiculous.

[@juntsmoka]

​@@GAMING2S It could make plenty more power than factory, It's a big, lower compression engine that makes a heap of torque. Probably very understressed and "detuned" because it didn't need to make an insane amount of power at the time.

[@leok3347]

this is lowkey an awesome channel. it will naturally grow don't push the uploads the quality is worth it!

[@Badger_S197]

Absolutely fantastic video! I loved how you stepped through the whole tuning process.

[@Four_Eyes]

thank you brother 🙏

[@Caeleb1234563]

Wow, that's a huge improvement in that acceleration time! I've heard - not experienced myself, but Jay Leno said - that these earlier vipers were held back by long gear ratios. I guess that torque improvement really helped to overcome that!

[@snakeballs8965]

A long transmission on a car with low torque might be a short transmission on a high torque car. Transmissions are torque multipliers, so your base value is very important in determining what your ideal ratios are.

[@bradleyedens109]

Incredible video man! I love how in depth you took the tuning process, no one ever does stuff like that

[@Four_Eyes]

glad you liked it bradley 🙏

[@xmo552]

@@Four_Eyes Was this done on the stock ecm and stock harness ?

[@soundpro707]

Great Video... I wanted a viper when I was a teenage in the 90's and now they're in my reach on the used market. Great video; Clean, to the point, no annoying music or long intro. Well done!

[@timmuller2599]

Go and get one live your dreams no one is living for ever

[@jackgreenstalk777]

amazing work. this era of viper as well as corvette are so raw, they still look and perform great and can come at a good price. looking forward to seeing how much more you can get out of it with mentioned upgrades.

[@aktionp20]

This was a really well made video. Explained the basics of how n/a motors are tuned! Loved the use of the death in the end! And also love that you stayed in a single gear to remove human error!

[@replica4132]

Thanks so much for this video mate, I really got a lot out of the graphics and explanation! Very cool of Street to Sand to let you video that process, many tuners refuse to let any stuff like that get out. :)

[@blainehutcherson7251]

Everybody is a somebody when it comes to tuning amiright. lol aka nah bro you can't post my secrets from my backyard tune on my Windows 2000 PC.

[@thegenrl]

Been on various forums for years and have seen PLENTY of youtube videos...this is the best, most concise tune video I've seen. Thank you for putting this together!

[@esnevip]

Instant subscribe, real science, real documentation, great presentation. The graphs looked great.

[@Four_Eyes]

thanks brew

[@KurumaDesigns]

That’s really impressive, people always say that it’s pointless to tune a stock NA car but you definetly proved them to be wrong Edit: wow over 100 likes, never gotten that before lmao

[@peterkater4292]

Well... And basically you proved me I should look into it for my Viper as well. It certainly is interesting for anyone to squeeze just what there is in the engine without further mods 👍

[@nickcaesar7650]

Tuning an 8+ Litre NA v10 isn’t same as tuning a 3.5 NA V6. Obviously the v10 has way more potential power to be made. My 3.5 NA V6 Lexus with 11.8-1 compression only gets 10 whp from a ecu tune.

[@peterkater4292]

@@nickcaesar7650 yeah, that's totally true. Large displacement (NA) engines likely react very favorably to anything you just "through at them". Grateful machines they are 😊

[@peteh8077]

Only ppl on the internet say that

[@pballer2005]

the difference is even more impressive on more modern dual cam + variable cam timing engines. even my little v6 mustang had a 10% improvement in peak number and something like 15% in the mid range with e85.

[@GarageSupra]

Well presented and clear non nonsense video. Thanks for the upload

[@hahaha12345678993]

dude these are by far the best explanations as far as timing and tuning i've seen on youtube, the visuals were just the cherry on top.

[@ericdornfeld4848]

This is an incredible video. One of the first youtube videos over 5min that i didn't skip to the good parts. Very good visuals. Very concise details. Thank you for this!

[@Adam_S281]

I wish you put videos out more frequently, but with this quality of a video I’ll gladly wait for the next. Well done man 👍🏼

[@Four_Eyes]

thanks adam, yeah this video probably took ~150 hours.

[@truckaholic596]

I love how put together your videos are and how well you explain what is happening and how it's happening! Quality videos over quantity!

[@cadeng8168]

This is the best tuning video I have seen on KZbin. Absolutely zero BS, every broad question answered. Nice

[@tellyawhatmate]

What an awesome video No blabbering at the start or selfies just all the good stuff

[@miketess4272]

I love the color and no stripes with the polished wheels …… it’s such a beautiful car. Great video too, subscribed!!!!

[@Four_Eyes]

thank you mike 🙏

[@mr.mueller7704]

Wow, this was the best tuning explanation video I have ever seen! You explained it so clearly and simply! I thoroughly enjoyed this! Also that viper is so clean! 🤤 way to go man! Badass

[@SteveRecFPS]

The visuals and graphing animations made me weak to the knees. It was so easy to follow along and i felt like a learned a lot while continuing to enjoy the progress being made!

[@AversaS2]

This was really great. It wasn't convoluted with graphs and whiteboards. This was straight, simple information to digest. I'm glad I found your channel. Consider me a new subscriber.

[@chuktang4683]

Amazing content, I'm a Mustang guy big time, but 1st and 2nd gen vipers are my favorite cars ever. Love to see your road map to making this thing a beast!

[@Four_Eyes]

ah yes, i need to make the roadmap public, will do in next Viper video.

[@Anything_With_An_Engine]

Awesome video! I love the details being explained in the tuning process. That Viper needs to get uncorked though! Have any major mods your gonna do to it? Or happy with it as is?

[@Four_Eyes]

Yeah so first mods will be a full exhaust and smooth tubes, then eventually the engine will be rebuilt. I am aiming for a 9+ liter / 700+ whp NA build.

[@Anything_With_An_Engine]

@@Four_Eyes Dang now thats awesome! That will be a monster to drive and its already a monster. Look forward to seeing that happen if you post videos of it.

[@Toxic2T]

@@Four_Eyes HELL YEAH KEEPIN IT NA BROTHERR

[@elnorro]

For a 20 yo car this one looks sick as you can get. I am big fan of old stock cars. This one is a real gem.

[@arsenalgunners1993]

I don't know what you do outside of KZbin but PLEASE make regular content. The quality, knowledge and entertainment value is top notch!

[@adamm.1367]

This is a great explanation of the tuning process. Although gains aren't usually massive on a factory n/a motor, tuning out the dips and rough areas in the dyno graph can absolutely be felt while driving. It's not always about peak numbers.

[@StanleyKubick1]

right? the midrange seemed to pick up a significant amount of oomph

[@TheMdpalmer]

Nice job tracking everything and showing how tuning is an iterative process. It's pretty nuts how much torque the stock car puts down over a broad rpm range. But yeah... I love gen 2 vipers, I am starting to regret selling mine. Beautiful car man, enjoy it!!

[@philithegamer8265]

One of the coolest Muscle cars of all time.

[@randomthingch1970]

i usually don't have interest to this stuff, but your explanation and visual stuff really hook me on to this

[@idpegg99]

Several years on, I keep coming back to these vids... just awesome - short and packed with fun info. It's sweet seeing how much more WHP you can get from that tune. Any updates on the GTS over the years?

[@Four_Eyes]

I assume you've already seen the video where the GTS gets a new exhaust and gets retuned? Now I'm halfway through installing an upgraded cam and ported heads, will be the first video of 2024!

[@klr142]

@@Four_Eyesready! Just found your channel and enjoying it all. Thanks for the quick vids with all the goods and cool stuff!!

[@mymomshonda]

Learned more in this video then I would in a hour long one. Much appreciated!!

[@fetusmccarlane9627]

Awesome. My mate tuned my stock (apart from exhaust)18 year old LS1 and made significant gains in torque and overall driving performance up to 5000rpm

[@edlakota]

Great format - focussing on the detail and journey rather than trying to be an entertainer/celeb/comedian. Subscribed!

[@user-zs5qp4hl9l]

It is extraordinarily satisfying to watch your videos both intellectually and entertaining, as I enjoy the way you explain stuff through the whole content starting with vehicle status either stock or modified, if so, what exact parts and aftermarkets it got, all in a very brief interesting way, running through more you start to summarize lectures, literally into words. surprised how I did acquire so much knowledge and stuff in a 6 or 7 minutes video, I appreciate your editing and visuals though. One last thing I came across is that, unlike you, most tuners tend to hide their runs worksheets and details on dyno including what they did exactly to gain so, as a "secret recipe", and I don't truly understand why?! ( keep up with uploading new videos, you're an offbeat dude )

[@Four_Eyes]

appreciate the kind words 🙏

[@randywilliams4325]

Very good vid on where to start and why . Most people don’t know that the Reno area is at 4000-5000 feet of altitude and that car might break 500ft/lbs at sea level.

[@bri-manhunter2654]

Good to know! Thank you.

[@crimsonlight4205]

Lmao I love how he specified that it “had” 20 year old tires on it as he’s burning the hell out of them

[@MeltingRubberZ28]

What else are you supposed to do with them lol

[@crimsonlight4205]

@@MeltingRubberZ28 put em on a mustang, can’t burn the tires off if your on top of a crowd

[@MeltingRubberZ28]

@@crimsonlight4205 hahahaha

[@lylepowys2056]

Hey @Four_eyes, really intellegent and comprehensive channel. I have learned alot from watching your content. Especially the final drive ratio! The road testing/real world after tuning or modifications is really genuine and appeals to me. Look foward to your future content and I sometimes re-watch some earlier content for things I may have overlooked. Cheers from Australia🇦🇺

[@c-moneycantrell7681]

Teach us more !!! Not many people can do such a great job on understanding, and being able to simplify it clearly like you do You have a gift and I definitely appreciate you taking time out to break it all down like you did in this video Thank you

[@DaysofKnight]

Beautiful car. Never would've thought a simple tuning would increase HP and Trq like that. Does this apply for just about any vehicle?

[@THEHITWONDER]

yes , the factories place limiters and restrictions on every car. tuning pretty much just gets rid of the limitations allowing for maximum air in/out which is pretty much what increases hp

[@danielcrandall5229]

I learned more in this 7 minutes than I did in auto class. Awesome setup and explanation! Thank you.

[@warkal868]

This is the number one video out there. We'll explained and detailed. Was a perfect joy to watch.

[@someguy5035]

Awesome video. Enough info to feed the brain, but not an overwhelming amount of detail to make it boring. Subbed.

[@todd5082]

Everybody likes to see max hp. But your dyno runs show just how important the entire rpm curve is. So much meat under those curves after the final tune. Peak numbers r for show, fat torque curves r for go.

[@triggamusician]

Firstly, what a beautiful car! Secondly, that experiment is just perfect for these old engines which were programmed and assembled by some farmers who didn't really know what to do. Like giving these old horses some coke and I believe they enjoy it! Lastly, thanks for the explanations of what was done. Seems so simple and logical but best to let a pro do it, I guess.

[@StanleyKubick1]

oh god I hope you're talking about soft drinks but sadly suspect otherwise

[@rainws66]

This video is perfect from the tuning info to the dragy results flawless

[@Tcmagee]

Explaining complex things in simple easy-to-understand ways is a superpower. This is the best video on tuning for non-technical folks I've ever seen.

[@Person.555]

i've watched thousands of car videos. NGL your videos are excellent. WAY better than par. nice job

[@CODMASTA]

I have never seen a more perfect KZbin video about car tuning. PLEASE DO MORE!!

[@jeff5798]

Honestly the best video I have come across explaining tuning, please do more!

[@spoku4996]

*Every car guy liked that* such a simple explanation on how it works to get people more enthused about the car and tuning scene

[@andredosapatonovo]

Just randomly landed on your channel here... What a top notch content. Seriously dude, great quality videos and very you're very charismatic too. Please keep up with this excellent job. I'm binge watching all of your shit.

[@A_Random_Person324]

Hearing that 8L V10 is something I can't describe I remember first hearing it in TDU2 back in 2011 when I got it, and hearing it here brings back so many memories

[@aminuabdullahi5922]

Finally a video that explains Dino tuning without boring me, straight to the point I like it

[@L00se_change]

Best tuning video I’ve ever seen. If you did one exactly like this with a multitude of cars I would watch them all

[@Philippe44]

10/10 This is going in my best of KZbin folder. A treat.

[@kilastrika]

PFFFFFFFFFFFFt I was watching those charts and the explanations and then I see the channel named Four Eyes. What a technical explanation that was perfectly executed on a vehicle like the viper. Well done! Never knew what those green and orange charts meant when tuning.

[@FSAviators]

This should be the gold standard video in explaining a tune, excellent work.

[@fordxbgtfalcon]

Literally the best video on the subject of proper tuning I’ve ever seen. Bravo!

[@agdwhite5421]

This format of video showing dyno results is by far the best i have ever seen, i really think people should learn about how a good dyno show video has to be! Thank you!!

[@soulja4187]

I truly enjoyed this video. Great explanation and no stupid music during dyno or commentaries

[@TrueRewire]

Succulent, straight to the point video, with good explanations and animations. Subbed.

[@Wingspan_5]

This is a VERY good video. Really well planned out, scripted and the visuals are perfect. You deserve a few million views on this one, not les than 500k

[@mr.s.7166]

This car will always be my all-time favorite . It makes you a better driver it doesn’t cost a fortune to maintain. The engine is pretty much bulletproof there’s so many mods you can do and gain tremendous horsepower. Even if the car is naturally aspirated. Definitely the most underrated supercar and in my opinion one of the best that’s not the best.

[@StanleyKubick1]

I knew all of that but have never seen it presented so concisely. This is the gold standard for making technical videos accessible to everyone and I'm sure you just inspired someone to learn more about engine tuning.

[@aemediainc]

I’ve seen people talk about dyno tune but none have explained it like this. Awesome video!

[@Four_Eyes]

Thanks Adam

[@LGcoolJ]

I am new to the car scene. There is so much i dont know and yet want to learn. This is one of the best Videos out there for dyno tuning. I actually understood what u said :)

[@pellebrannvall6521]

This is the best Dyno and Tuning explanation I've ever seen!

[@blaing3354]

this has been one of the most pleasant youtube videos to watch in recent history, thank you.

[@GuvernorDave]

Holy crap, I just learned so many goddamn things in 7 mins. All these word's I had heard before related to engines but never understood what they do. Timing, air/fuel mixture, knocking etc. I had always though of ECU tuning as some kind of voodoo magic that would take a PhD to learn but this video just nails the layman's explanation. I didn't ask for this to be in my feed but I'm glad it was. Thanks for the education!

[@PlasmaJunkie]

Dude, I’ve watched two of your videos and you’ve answered several questions I wanted to know since I was 15 years old watching The Fast and the Furious.

[@MannequinSmiles]

Great explanation! This is the first time I have seen these charts and graphs and actually understood them

[@zjemcikapcie1914]

Holy shit. This was pure pleasure to watch. More of these please!

[@voodooturbo]

Just echoing other people's comments. This was a great, no-nonsense, and educational video on ECU tuning. Great stuff. Thanks!

[@yamiam91]

More of this kind of content please! love the channel

[@TheDdahc]

This vid explained timing and tuning so simply and yet engaging

[@Fantasyze]

That Viper is immaculate. much respect.

[@charlieshad139]

best vid i've seen explaining tuning! simple and straight to the point! also beautiful viper GTS! subbed