The tubular subframe is supposed to weigh about 10 lbs less than stock, so we can reasonably assume that if your car already has one, you're going to drop about 20 lbs. instead of 30.

Note to self - hurry up and install the tubular subframe hanging from a nail in the garage.

My car was neck and neck with the kswap car on the main laguna straight at my 230 whp/8 PSI setting. Sure loved listening to it go by after the point by though. What a sound!

Ryan, really the deal is that you give up torque in the name of a new powerband and greater simplicity. Just a tradeoff. Which do you prefer?

I think ryan needs to drive his damn car. The thing is awesome. And doesnt get driven enough.

Quit doing silly things like dirt bikes and women and drive!

:D

Yup, two 230whp cars should be pretty comparable, and our possible small weight advantage was always taken away with someone in the passenger seat! My point earlier was that many cars with a bolt-on turbo setup aren't pushing quite that much power, so a stock K24 chases them down pretty easily.

Just my opinion, but I think it really comes down to how much track work you'll actually do. If a lot, then this is a good idea for sure. If not, then stick with what you already have.

...and what you actually want. Do you LIKE the feel of a turbo, or do you prefer the high-rpm scream and sound of a Honda engine?

I couldn't decide, so got both. :P

No sure what emissions rules are in your state but my decision came down to emissions. I'd love to have a k24 miata. But removing a turbo kit every 2 years was more reasonable then swapping an engine every two years.

Damn CARB.

CARB won't be a hurdle for long :)

By all means, don't feel free to share or anything ;)

Yeah, I'm just always hesitant to make things public before they are official.

I wish I knew that before I built my BP engine...

Thank you. I hate post where people are asking companies to release information, then bitch about when it doesn't come soon enough. Real engineering takes time and testing, and then more time and testing. That's why I feel the TSE turbo kit and K swap kits are two of the best options out there for powering up a Miata. They weren't released to the market until thoroughly tested

Totally agree. While it's great to have advance notice of a particular project, it often results in people complaining that "I PUT MY BUILD ON HOLD WAITING FOR THIS THING YOU WERE WORKING ON AND YOU'RE NOT DONE YET HOW DARE YOU" even though it was always just shown as a 'hey guys this is something we're working on, shooting to have it done by the end of the year' type of thing.

I think the op just wants to start another build thread and complain about things not working, then coming up with gorgeous over engineered home made solutions.

Petition to change his name to ryansmoneypits.

Apples to Apples, Kmiata uses a tubular subframe.


So my opinion may not mean much.

My experience with turbo BP was in a fully gutted tube front end race car, the engine was built to the hilt push 460whp + Nitrous. Before i parted this car out there were many things that i wanted to change about the setup.

I find the K24 swap to be much much more fun to drive, my turbo car did not have the mid range punch and throttle response of the K24. Yes once the car got into boost it was a hell of a ride. But in my opinion all around fun the K24 is better.

It is 1000% more reliable then my turbo car, Much less under hood heating. I know drifting is not road racing but for what its worth I can hot lap my car all day at a drift even ( 1.5 min run + 10-15 min in line with no air flow other than fan) and it just sits at 190-205 degrees.

I am saving to build my K24 to the 300whp region, I did the K swap to have the highest starting potential for my car, i didn't concern my self with the price so much.

Really good posts guys, It all has me thinking deeply, even more than before. Especially this one ^^^^. Drifta knows what its like to have wayy too much power on tap, and then have much less, so a good insight. I think what I am going to do is install the EFR and enjoy it for another year.

When all of this K MAdness is sorted out, then I will jump ship. Two solid turbo kits should fund the swap.

Keep going with the discussion though, its all very insightful, for me and others I'm sure.

but to be fair, your car while making tons of power was super duper laggy and gutless down low.

vs a built bp6d running e85 on a 6258 would make torque everywhere.

But then again, you can boost the K too so that puts it back up on top.

Yeah I don't think my race car is the best comparison. But the way a NA car drives is wonderful.

I was fully looking at turbo for the k24 but due to the cost and lack of drivetrain options I decided to build it NA. A K24 with 12psi is 400 whp and over 300ftlbs