Hey, Detroit Area Miata here.
 

Hello, My name is Bryan. Just picked up a 91 Miata with a jrsc installed. Heres a little run down...

1.6 engine w/30k on it.
jrsc
Meth injection @ 6 lbs
FMIC
10LB pully
Narrow band

Runs great after about 4k anything under that and shes lean. To remedy this ive just picked up a Greddy Emanage blue system. Looking for knowledge and came across miataturbo.

http://img149.imageshack.us/img149/876/toys004.jpg

Welcome car looks great! If your looking for knowledge you came to right place. Just take a look at the ecu's and tuning section. I believe there is a e-manage section. Have fun learning.

Make sure you do some searching before you start posting questions.

Lean, do you have a fuel pressure riser? Or a pc pro.

Well, you have a narrow band. It is useless for tunning. Narrow band is just a light show. It just reads lean or rich. You just don't know how lean or rich.

Get a wideband. You won't be able to tun the emanage without the wbo2 anyway....... You may be good.

If you are running a fuel pressure riser.

Just pop the cap off the afm and turn the lean mixture screw. it should richen up.

Hope this helps.

You can get an Innovate LC-1 or AEM unit for about $200. I'm running the LC-1 myself, and it really made the difference when I tuned my car. BTW I really like your JDM sidemarker.