I have spent days looking into getting an Air/Fuel gauge so I have it when I get my dyno tune and I just need a little direction. Has anyone used one of these http://www.ebay.com/itm/Equus-8366-2...bb1cb2&vxp=mtr I like the idea of keeping an eye on both banks but I worry that it is not very accurate. Also I have an 04 coupe does it have the wide band o2? I have read yes and no. Does it need to be really accurate or does the tuner use their own? Thanks for the help.

 

Hey not sure about the accuracy. But you can try these sites.

zeitronix.com
plxdevices.com

 

04.5+ comes stock with widebands! Also your tuner shod/will have a way to monitor afr's if not DONT USE THEM!

 

04.5+ is not a true wide band...it is 0-2 V as opposed to the 0-1 V used on the 03-04

True Wideband O2 sensors use 0-5V

I'd recommend using a Innovate or the AEM.

I also sell them