We’ve missed you Crèche.

526 HP is INSANE. This Miata must feel like your driving a rocket ship now.

Always a good day when Craig posts a video

It’s definitely got 600 in it. I’m excited to see it happen once you get bored 🙃

That really shows how much things have changed in a decade and a half. Turbo technology has come huge leaps forward, 500whp from 1.9l with such a broad power band and 12:1 compression. Very nice build!

Thats crazy! Lets hope it proves to be reliable. I can't wait for the driving videos!

7:48 CONGRATS! You have taught me so much over the years and you made that happen. I can't wait to pull out my 99 vvt to actually build it out. This is peak DIY badass 500hp driveway built reliable power.

Hopefully the billet caps do the trick this time. Loved the puppy footage at the end ❤

Oh man. I wish you could see all the smiles on the faces of people watching your video. Amazing!

SO CLOSE to that 420.69 torque

Awesome build, awesome Dyno day. My car just has the 100% stock naturally aspirated BP 1.8 engine, and it's been very reliable and long lasting. Mine is still running with nearly 400,000 miles, but it is truly amazing to see how much power you've gotten out of yours as well as the passionate work you put in the make it happen. Awesome builds and awesome video. Can't wait to see you blow the doors off a mustang at the track because they underestimated that beast. You rock 🤘🤘🤘🤘

Man I miss driving my 90!!!! 90hp miata😂 But the day after tomorrow I can roll that beast out of it's winterstorage and tackle a few corners. Will hopefully be the last season naturallyaspirated😊

Greg your badass so interesting and informative. Really putting in the work to find out what’s possible and share it with everyone with great apples to apples comparisons, this is so helpful to anyone who tunes. Enjoy those ponies man your earned this.

Perfect video for lunch, thank you Greg🙏

Solid build. I'm impressed, Greg. Well done :)

14:04 need more humor like that in my life, you ALWAYS get me when you get real serious man

Greg a "fun street" mx5 is a TD04 turbo'd 200whp car, what you have there is some insane exoitic killing monster lol

On your 512whp run your wide band gauge was showing 12.2 AFR . IMHO that doesn't leave a lot of room for error being that cylinder to cylinder AFR can spread 10-15% on even well setup cars. Drown that thing in fuel until it coughs then back it off a touch. Just my opinion on giving yourself some margin of safety 🦺. Love your videos keep it up :)

I have a low.... like really low cp engine. Stock was 7.4 to 1, and now it is about 8 to 1. Milled ahead and went with a super thin head gasket. I personally like big boost numbers but also love a super Snappy responsive engine. I'm working with an old Datsun engine 2.8l l28et. I've done a couple of different engines, 9.5 to 1 cp and 8.8 to 1. You really can't tell the difference between the 8.8 and 9.5 cp engines. If I was going to give advice to anybody, I would tell him to go with as low of compression as you can to get to your goal.

Wow. What an epic weapon 🛠👌🏼❤️ From the good old days of broke-n-boosted to the 500whp beast! The journey to this tuning level has been a proper rollercoaster Greg, loved being along for the ride and learned a ton from you.. so thank you for all the fantastic informative content 🙏🏼 I think many would agree you’ve more than earned some quality time to enjoy the car. Enjoy brother 👊🏼😎

I got to say, your dedication is on point. It takes so much research, time and money to get to this level. So proud of all the hard work you are doing with this channel. It's near "lightning in a bottle" to get these numbers on the Miata platform. I couldn't get close to this with my build.

Now you've got time to mow our lawn! ;) Awesome job and an awesome build, can't wait to see you whip it at a track. Should run circles around alot of high profile cars!

Nice. It’s been far too many years since I’ve watched a mustang owner cry. Not long to wait now?

The grass in your yard looks like mine used to, good to see you have priorities in the right place ;)

What an absolute animal. Can't wait for some driving footage! Congrats Crog!

Did you notice a change in overall sound of the build now that your high compression? I’ve heard once you do a hc build it sounds like an absolute monster

The last thing i learned in this video is that you’re so focussed on your awesome car you forgot to mow the lawn 😂 In all seriousness, congrats on making this thing more amazing and besting your own records!

"I don't know how much boost it will take, but I know how much I'm going to give it!"

Well done Greg! The world needs people like you - putting everything on the line in the name of science. Awesome result.

Awesome video! Great to see how much ignition timing is making power, I’ll need to play with mine more!

This man deserves this positive dyno session and results. Hard work and tons of gifts to viewers. The website blogs and mega build page are also great work and gifts. Now where is that optimised VVT map shown? 😂

Good stuff Clegh!

Love this data-driven approach. I even dyno'd my bone stock 2.0L Protege because I wanted to know what each mod afterwards was actually worth. Made a mighty 84HP. Good header and an intake brought it up to 105HP though, and my second header was almost twice as good as the first. 500HP is a little beyond comprehension 😅

The goatededest Miata/builder on the tube!!! 🐐 🚘

Greg, where can we support your fund for new tires? those fronts look super bald man, and this is just after your engine build I can tell. let us know how to support ya!!!

Completely Awesome! and you are living the dream. Makes me want to get the bigger turbo option... Currently building a Maruha 87mm engine for my Miata and its because of your videos and the information you share with us THANK YOU!

That little EFR is a monster!

Pretty sick dude. Those are solid LS numbers there, very impressive

Thank you for the great video once again ! Can't wait to get my car out of winter storage and play with it. You're the reason I went turbo with a megasquirt on my NA. Next project is to install 36-2 crank trigger wheel, bigger intercooler and cleaning of the map on the dyno. Again, all the fun is because of you and your channel that gave me the confidence for this project. 😎😎😎

Amazing video Greg, we love you.

So happy to see this thing making so much power, so inspiring 😊

What a wild engine setup! You always make me wanna slap a turbo on my old BP! Not sure how much i trust it as it is but maybe someday haha. That thing has got to be fast! Can’t wait to see/ hear some pulls from it!

I wonder what the force on the main caps is with the low compression vs high compression pistons. It would seem that lower boost and less timing for the same power might mean a safer engine, but since that was the point of failure it's really all about force at that specific part, i figure. No way to really know i guess, but interesting to think about.

According to an online boost-to-compression calculator the effective compression ratio of the new engine is 33.71:1 (26.6psi@12:1). As compared to the old setup with 28.41:1 effective compression (31.7psi@9:1). So assuming this calculator isn't whack, you're able to get about 15% more air into each stroke at sea level. Neat. Expressed another way the old engine would need to be running about 40psi@9:1 to get the same amount of air into it. Super neat... or my math is bad and I need to repeat class 😁

The tunnel vision squint face on the pull was real 😂😂😂 I cannot wait to feel my car

that miata is sick, bro makes me miss mine.

Time to mow the lawn!! LOL! Awesome work, I'm super happy the motor build is working out. Great numbers!

Very Nice , One of the best videos Ive seen in along while . I would bet that those piston rings will wear out sooner then the low compression engine though . Had an AE86 Corolla with 427 HP Power to weight was a blast . I could beat the R32 GTR by third gear easily . Cheers

Love the old school thinking of "If you add boost you have to lower compression." More proof that if you do it right you can up the compression on older engines.

Much love dude - good job !

Boost it til it blows up, it's the only way 💥 Kidding aside, a 10:1 compression, slightly smaller turbo, and lower boost might be a bit more streetable and maybe not need E85 all the time.

I formally challenge you to a 1/4 mile race Greg! I will put you up in my guest room for a few days and we can head over to Sonoma for a Wednesday night drag race.

I'm sitting with my own volvo 740 and looking at a stroker kit, from 2.3L to 2.65L with stock turbo pistons or slightly over with 96.5mm pistons. I'm heavily leaning toward stock piston size as i want to keep it as rigid as possible and those 30-40cc extra aint worth it really. The stroker kit can be had with forged rods and ARP bolts for about 1000 dollars which seems like a pretty good deal for an almost fully forged engine/crank is cast, but these volvos dont rev much past 5500rpm so it's fine with a camshaft for turbo use) dunno what turbo would be best suited as the stock mitsubishi 13c is runs out of breath at around 180-200hp which would be about 5-7 psi boost with a stroker kit, a 15G would do about 8 PSI and a 19T would be like 11 psi (which would be about 250 hp at the crank. but my goal is pretty modest at about 170-180(which could be done another camshaft but i like the fact that i can dump the clutch at a stand still and the engine just goes with :D )

Great build Greg. Awsome insperation. Your content is always very educational for the miata comunity

soo… almost finished building my yata. how about you come down and tune it for me!😂😂 loved the video! definitely was on my toes the entire video. just as excited as you are!! keep up the hard work man!

Awesome man congrats. If it was me I'd still turn it down 2 or 3 degrees. Looks really fun looking forward to some more POV

Omfg. Nice. Drive it out to the east coast!!!! Matg is calling!!!

So cool and excited for you!

What a great video; that was an awesome ride. I think your advice before the end was spot on. Knowing I can't commit to E85 I won't ever go there, but Thank you.

I always love this I feel like I’m the only person when they say they want a certain number once I hit that number call it and clean up the tune irw scenario and go on with my life. Unlike most my buddies 😂 i don’t got the money to be “fast” unless a sponsor comes out the wood works.

That's cray, good job man!! Take it to the drag strip let's see if you can get into the 10s.

My Miata makes 100hp at the wheels and it's fun as hell!!! This is on a whole different level. 500HP!!!

Good God man, thats freaking crazy. Makes me think I should build up my nb2. Also you are incredibly smart. I love watching your vids because I always learn something new. Keep up the good work my guy!

"Turned it down to 502"😆😆😆😆

It was definitely worth the weight congratulations dude!

Damn I bruised my fingers from smashing that play button

This is INSANELY cool!! I've wanted to do a high compression E85 boost build for a long time, but with college budget, not happening. I have to ask, how on earth are you pushing 20psi into a 12.5:1 engine and not knocking? I've heard (online, admittedly) that the highest you can go on E85 is about 13:1 NA, and 20psi @ 12.5:1 is about equal to 29:1! Amazing build, instantly subscribed.

How clean the exhaust smoke is !!! Its sad that im only able to get 91 octane fuel in reasonable price The best fuel i could get is 95 octane , and the price went throught the roof

Great data on the comparison of 12:1 and 9:1 for these motors. I was most excited for these numbers too so thank you for providing them. Since the dump graphs were pretty spot on as far as when power comes on, what is the benefit? I know you said they take less boost and timing to reach those power figures but does this mean it’s more reliable because of that? Later in the video you said 9:1 would be more reliable?

This Craig guy knows boost control.

Thank you! So informative. And amazing numbers!

Inspiring! I'm doing something a little similar to my other project car! I should make 300-400 on a low boost tune while I have a high boost tune for 500-600

Loving the progression! This car has all the sentimentalness!

I'm so proud of you bro! 🤠👊 Been waiting for this for a long time. Congraz!

Hot DAMN! People tell me that my 410hp Silvia S15 must be pretty fun to drive... I'll tell ya, at 1250kg, it's spicy alright. But this must be SCARY to drive! 500+hp at what, 900kg?!

You’re the best Greg! Thank you for the good content and taking the risks on our behalf lol in the name of science of course! Lol

An amazing car, and an amazing accomplishment! Plus actual data to work with!! Bravo!

been watching you since 2016👏🏼 Congratulations on your build🔥 one truly badass Miata

McLaren F1: 618 hp (crank), 2509lbs Greg's 1992 Miata: ~618hp (crank: 526/.85), probably less than 2500lbs (!!)

Man I wish there was someone in Utah that's as knowledgeable about these cars as you.... my 02 miata has been giving me serious issues for a few months and I can't figure it out

How long until you can quit your job (Retired Mr. Craig) and join the FM team full time as their turbo specialist?

Congatz on the awesome build, Greg👍

Hell ya man!

so sick and i thought 300 was a lot in a miata love your videos your my go to channel for info working on my own car

Loved the video Greg. Perfect amount of data, I am glad you made it a long one.

I cannot imagine how scary your Miata must feel now. The average person would probably need a diaper. I have a few thousand miles on a rebuilt 1.8 non vvti with low compression pistons. It feels just as fast, if not a little faster than before the rebuild when it had 225k miles. Still waiting to actually turbo the engine.

Very cool I'd like to see you tune a gr Toyota yaris

Cool video, cool channel. I like my LS3, but I like your turbo, too. 🙂 I like to do road trips in mine, on two lane roads out in the middle of nowhere, so I'm glad it'll run on 92 rather than E85. That's the only downside I can see to your high CR approach.

Greg, RE the discrepancy between on-screen readout of power vs opening the files on your computer - I suspect it's the smoothing of 5 setting. 1-2 smoothing I think should be enough.

Congratulations man. Now you deserve some proper aero

Meticulously manufactured motor makes more momentum manipulating modernized modified moving memebers maximizing Miata movement. Marvelous!

Congratulations to the whole building and filming crew! 😂

Insane! Love the content and awesome data! Miss my NA!

Greg, You are such a champ :) Love the data and the video that you make. Freekin awesome.

Ty for all this data, helps heaps for choosing a build

way more efficient, thanks for sharing the data!

I'm not sure if collabs are your thing Greg but you'd probably get along great with @superfastmatt. He's a Californian based engineer/car guy who has a similar mind & video style to you. Him doing a quirky video on your Miata would probs be great for growth & also interested to see other people's impression of the red beast.

awesome work Grec!!

Congrats, man! Awesome results!!!

@12:54 is that an old Alpine IDA-200 stereo I spy!!! I run a slightly older one in my mazda too (ROFL). I propose another comparison video! Boostane Octane booster on pump mixed to 100oct, compared to e85. Yes pull timing and boost levels first, but I can guarantee the data will surprise you.