wideband af gauge?

Go over to one of the Tweecer sites and see what wb's those guys are using. Over the last several years they have really come down in price. I use a FJO but it is several years old and it has been upgraded several times since I got mine.
Not sure but I think you can have several options in the 250 to 350 dollar range.

Later
Grady
 
I've got the PLX M-300 and love it. That zeitronics one looks fine, but I think that it may be difficult to glance at it to see the current A/F ratio while driving. The PLX unit has a much larger, simpler display. It doesn't do the datalogging or have all the extra inputs, but with my TwEECer RT, that doesn't matter.

Rick