Hi guys! I'm new here and would be delighted if you guys could help me out with my 400whp goal.
I drive a 91 na6. After searching on this forum, I found out that my goal can only be met with swapping a 1.8 and turbo charge it with one of those turbo kits in the market (correct me if i am wrong..). And I can't afford a v8 swap atm.
I am interested in the FMIIR kits, the hp gain seems so promising.
So, what are your opinion and suggestions to my problem?
Thanks in advance.

 

400whp you need to completely replace drivetrain, build the motor, and run a lot of boost. I estimate 8k at least.

If I was you I'd get arttech or absurdflow hotside parts,BW EFR turbo, build a motor with VVT, get XIDA CS, FM clutch, Reroute, maybe WI, and a rollbar.

There is a reason no one here runs 400whp (see failflora build thread). These motors can't handle that much power for very long. You'd be surprised how fast a 250whp miata is...and you won't be breaking 6 speeds.

 

It can also be done on a 1.6. You can achieve the same results on a 1.8 with lower boost settings and better spool.

On the 1.6, you need a big turbo (genuine Garrett 3076 or similar flowing turbo), header manifold, properly sized intercooler, cams, standalone ECU. I've tuned one and got 327 crank hp / 248 tq at 14psi and 407 crank hp / 340 crank tq at 26psi.

 

thanks a lot for the replies guys. I will look into it.
Is it worth it to swap a 1.8 then turbo charge it or just use the existing 1.6?
I apologize for my stupid questions, I just bought my miata and fell in love with it instantly haha.

 

Am I wrong in saying that if you can't afford a V8 swap, you can't afford 4 cylinder 400hp? Assuming you do all the installation work yourself on both, buy a used V8, and replace the transmission and diff on the 4 cylinder scenario just like the v8 swap. Don't think it can be, if it can, it'll be very close.

 

Why is 400whp your goal? Did you ever ride in a miata that makes 300whp? Hell, mine makes 200whp and it's respectively fast, 300whp is really fast. I'm talking fast as in, LS1 cars and new mustang 5.0's have a hard time competing with it.

 

(Sent from phone via capitalism)

Built 1.8 with vvt. Everythiing else one off custom designed for power and flow

 

400 whp is slow.

Speed is relative, however, it's slow in my eyes.

 

1000whp is slow. Everything is slow.
Honestly I don't even know how people can bear driving anything under 2500whp. And even that's only on a daily driver.

 

If you can't afford an SBC swap, you can't afford a 400whp turbo set-up.

 

Show us pics or a vid of you "loving" it, preferably with your mouth.

 

that's actually quite true. If your "budget" is under about 10k you should stop wasting peoples time

 

I see mad drifting in the future.

 

400 ponies!, not without flame suit.

 

Where are you getting this power goal from?

 

What you really need is a motec exhaust, and direct port nitrous injection.

 

2 big ones, right up the ***

 

I see no additional posts in the future.

OP, while you are busy pulling numbers like 400WHP out of your ***, you might as well dig for another $8-10K while you are at it. When you have that come back and we will help you spend it and you WILL have your goal of 400 WHP.

 

 

Agreed.