This will be my build thread for my HPDE/AutoX/DD ND2.

back in 2022 I picked up a lightly used base model (sport) with a 6 speed manual and a soft top. I proceeded to flog it around any track or event I could find and then rip stuff off in hopes to make it faster.

I’m currently in the process of getting tuned for my HKS GT2 supercharger and building a front splitter to balance out my 9LR rear wing. More pics and details to follow.





Wait, how’d that get in there?…

 

I'm looking forward to seeing your impressions of the HKS kit.

 

Same! It's a really clean install. What kind of whp?

 

should be ~250whp and ~200wtq, but I haven’t been to a dyno yet. I’ll be sure to post up a chart along with acceleration plots when the tuning is finalized. As of right now it’s a very linear pull and feels more like a built K24/k20 hybrid.

 

Nice rig! ND's look so mean with a little aero. Sub'd for more details.

 

That engine bracing looks mean.

Did a double take when I saw your location. I was up in Moscow for school a handful of years ago. Seems like I still make the trip up once or twice a year in my Miata. Maybe we'll cross paths at some point.

 

FWIW This car was sold.

 

This sounds like it was written by chatGPT lol.

 

Cats for truth lol

We should do a chatGPT build thread with pictures and all. Train it on the entire site and see what kind of mashed up 2005-2025 build thread it puts together.

 

Hahahahaha. Zak nailed it with the bot/chatGPT comment. That's hilarious, the meme made me lol too.

And I love the chatGPT build idea, how tf do we make that happen. hahaha. Maybe we'll get a DEI build.

 

Dudes, that would actually be hilarious hahaha. If we could train it via every build thread on this site, I wonder how many blown engines the AI would say it went though. Could actually be a rude wake up call for the community

A few months ago, my buddy had an AI photo generator make some pics based on our bike trip campouts mixed with each of our other hobbies. One of the pics showed a bunch of guys jumping snowboards over a Miata and some vans. It was hilarious. I'll ask if anyone still has the pics handy and post them if I get them.

 

Oh God... I just punched it into ChatGPT... We're too predictable lol

Not sure about EcuTec on an NA though.

Now we just need some AI generated photos to go along with this.Title: Turbo Miata Build - Project "Boosted 1.8"
Introduction:

Hey everyone! I’m excited to finally start sharing my turbo Miata build with you all. It’s been a dream of mine to push my NA Miata to the next level, and after a lot of research, planning, and parts sourcing, I’m ready to get the ball rolling. My goal is to create a reliable, street-friendly car that can handle some serious fun at the track and on spirited drives. I’ll be documenting every step of the build here, so feel free to follow along, ask questions, and offer advice!
Car Details:

• Model: 1992 Mazda Miata (NA1)
• Engine: 1.6L (will be swapping to 1.8L)
• Transmission: 5-speed
• Mileage: 156,000 miles (on the body, engine is being replaced)
• Current Modifications: K&N cold air intake, upgraded exhaust, eBay coilovers, upgraded brakes

Build Plan:

I’m going for a solid turbo setup that will give me great performance without overdoing it. Here’s the plan:

1. Engine Swap:

• Goal: Swap the stock 1.6L engine with a 1.8L for better boost potential and reliability.
• Parts:
  • 1.8L BP6D engine (from a 1994 Miata)
  • New gaskets, seals, and belts
  • Fresh oil pump and timing belt

2. Turbo Kit:

• Goal: Build a bolt-on turbo kit that can comfortably support around 200-220whp.
• Parts:
  • Turbocharger: Garrett T25 (good balance of spool and power for street use)
  • Turbo manifold: CX Racing top-mount
  • Wastegate: Tial 38mm
  • Blow-off valve: HKS SSQV
  • Intercooler: eBay 28x7x2.5 FMIC
  • Turbo oil lines: Earl's Performance braided lines
  • Downpipe: Custom stainless downpipe

3. Fuel and Tuning:

• Goal: Ensure the engine gets enough fuel and is tuned properly for longevity and power.
• Parts:
  • Fuel injectors: 550cc injectors (adequate for my power goals)
  • Fuel pump: Walbro 255lph
  • Fuel pressure regulator: AEM adjustable FPR
  • Tuning: ECUtek ECU and dyno tuning

4. Supporting Mods:

• Goal: Build a reliable and supportive platform for the extra power.
• Parts:
  • Clutch: ACT Stage 2 or Exedy Stage 2
  • Flywheel: Lightweight flywheel (MazdaSpeed)
  • Cooling: Mishimoto aluminum radiator, twin electric fans
  • Oil cooler: Derale 19-row oil cooler
  • Exhaust: Full 2.5” stainless exhaust with Magnaflow muffler
  • Brakes: Wilwood brake kit (front), new pads and rotors
  • Suspension: Racing Beat sway bars, new bushings, upgraded shocks and struts

Build Progress:

Week 1 - Disassembly and Engine Removal:

I started by tearing down the car. First thing I did was pull the old engine and transmission out, cleaned up the engine bay, and prepped for the 1.8L swap. I also took the opportunity to inspect the subframe, bushings, and suspension components. The engine bay has some minor rust spots, so I’ll be taking care of that before putting the new engine in.

Week 2 - Engine Swap and Prep:

The 1.8L engine is now in! It was a bit of a tight fit, but everything lined up well. I replaced the water pump, timing belt, and oil seals before installation. The next step will be installing the turbo kit.

Week 3 - Turbo Kit Installation:

The turbo manifold went on smoothly, and I’ve started mocking up the intercooler piping. I’m using the stock Miata radiator for now, but I’ve got a Mishimoto on standby for when I start cranking up the boost. I mounted the Tial wastegate and the HKS blow-off valve, which should add some great noise.

Week 4 - Fuel System and Tuning Prep:

I’ve installed the 550cc injectors and the Walbro 255 fuel pump. The wiring for the new ECU is ready to go, and I’m excited to get it tuned. Once I’ve got the exhaust system installed, I’ll be taking it to the dyno to get everything dialed in.
Challenges & What’s Next:

• Challenges: The biggest challenge so far has been fitting the intercooler piping without cutting up the front bumper. I’m going to trim it a bit for clearance, but I’d like to keep the car as OEM-looking as possible.
• Next Steps: I need to wrap up the exhaust system and get the car ready for tuning. I’ll be documenting the first start-up and tuning process once everything is installed.

Closing Thoughts:

I’m really looking forward to getting the Miata back on the road with some serious power. I’ll be updating this thread as the build progresses, so stay tuned for more updates. If anyone has any advice or thoughts on specific parts I’m using, feel free to let me know—I’m always open to suggestions!
Parts List:

• 1.8L BP6D Engine
• Garrett T25 Turbo
• CX Racing Turbo Manifold
• Tial 38mm Wastegate
• HKS SSQV Blow-off Valve
• eBay 28x7x2.5 Intercooler
• 550cc Fuel Injectors
• Walbro 255lph Fuel Pump
• ACT Stage 2 Clutch
• Wilwood Front Brake Kit
• Mishimoto Radiator
• Custom 2.5” Exhaust

Thanks for following along!

Let me know what you think! I’m excited to hear your feedback and recommendations.

 

F*ck, I'm pretty sure I said this verbatim somewhere in my first thread.

So many hilarious and scarily accurate details, from the eBay coilovers to the "I've got x on standby for when I start cranking up the boost".

Damn, maybe we are predictable hahaha.

 

Hell, I've only ever met like one person from here in real life. Maybe everybody's just an AI. All the more reason to get out some meetups, gotta know who we can trust.

The (adequate for my power goals) got me. Pretty sure I've said stuff like that before as well.

 

I'm the only real person. Everyone else is just an NPC. The universe only exists as a testing program to see how many blown 4 cylinder engines I rebuild until I finally give up.

My buddy sent me those AI generated images. I'm not sure what the exact prompt was but this one is of "our ideal boys weekend".



Also not sure what the exact prompt for this one was but at this point I believe the AI knows me more than I know me.

 

Until proven otherwise I'm going to assume that's a real photo of @Z_WAAAAAZ