I needed a voltmeter after my battery discharged so I got an Ultra-gauge
http://www.ultra-gauge.com/ultragauge/index.htm
It attaches to the OBDII port and reads info off the ECU

This thing is small about the size of a credit card and it also clear CEL codes

It is also easy to mount anywhere and I mounted it on the hardtop latch

I haven't tested it much but so far I like it, the refresh rate is pretty quick
Not bad for $80 bucks

 

i got one too! but it's the old version. great price for an obd2 reader. i mounted mine next to the steering column and used double sided tape. how did you run the cable to the obd port?

 

I ran the cable through the A-pillar plastic
Fits perfect

 

How many sensors/gauges does it read for our S?

 

It depends, you have to check for your year
http://www.ultra-gauge.com/ultragaug...augelookup.php
But it has over 50 different parameters for '06 and up

 

I mounted mine in my radio door. It's been there now for a a few months. Don't have a pic right now, but maybe I can snap one later.

Pros:
- Extremely readable, even with the top down and direct sunlight
- Easy to use
- Multiple "pages" or screens with custom displays
- Alarm/Warning feature (e.g. beep at above X engine temp)
- Price
- Acts as real-time gauge and code reader.

Cons:
- Limited usefulness as real-time gauge. I'm only using it to monitor Engine Temp and Intake Air Temp.
- Bastards never sent me my rebate or responded to emails. (Looks like they're not doing a rebate right now).

 

They don't have an 01 s2000 listed, starts at 02...I wonder why

 

I still have mine but never installed it in the s2000. I originally ordered it for my '10 mazdaspeed3 because they don't have anything to monitor coolant temp and after adding an intake to it I added fuel trims to the main page too. What do you guys have set up to monitor on it?

 

well i ordered one, lets hope its good.

 

Too bad the ECU doesn't have an oil pressure gauge
otherwise it would be perfect!