Hi all,

Wanted to introduce myself.

I've had my 1990 Miata since 2008. Learned how to wrench on this car and had lots of fun tracking it.

Here is how it sits now after I spent 2015 turning it into an Exocet:



You can follow my whole build here: Jon in Detroit Chassis #123 Build MEV OWNERS GROUP - A top kitcar forum for kit car builders

Over the past year I have been tracking the car a lot and having a blast. Now giving serious thought to going turbo. The Exocet in stock form is a quick car, but still by no means fast in a straight line.

My plan would be to go with a FM2 kit with the new FM221 ECU. I do not think I want huge power. I think something like 170 whp would be plenty for me in such a light car. I can't see myself wanting more than 200 whp.

As such I think I am leaning towards the GT2554r.

One area I am very unsure about is exhaust. 2 years ago I paid a decent amount for a nice Enthusacar exhaust for the Exocet along with the metal core cat. Why run a cat? Because I don't like putting more poison out than I have to

I am kinda partial to the look of it, too.

I know that bigger is better with turbo, and most recommend 3", but how much would it hurt me on my modest power goals leaving the 2.25" exhaust that I have?



Looking forward to joining the community.

 

2.25 will really choke the turbo, with a significant hit to spool. 2.5 is reasonable if you're aiming in low 200s, if you want 250+ then you should go with 3".

--Ian

 

3" all the way. Especially if this is track only. You can certainly keep the noise down even with a 3", but the spool and power loss will be unavoidable with a choked exhaust. Let that beast breathe. Very nice build.