hi, pls help me make choice. I need cheaper and good chars wideband.

ps: i won't pay for a Brand name (AEM, etc)

if you won't pay for an AEM or Innovate then you are out of luck. and those aren't even the best by any means.

PLX for affordable WBO2 with good quality and support.

JAW for on the cheap.

x2

PLX m300 here. Very happy. Simple and works great.
think i paid around $300 USD a few years ago...

Innovate full kit 219 USD free shipping

Something to think about too is how much the sensors are if you ever need to replace them...

I switched to the Innovate LM2 recently. Bought it through C.H./Xenocron (who hooked me up with a pricematch to his competitor). Only issue I had with it, is once again, cig light plugs generally don't have enough voltage to make the heater circuit work. I chopped the cig plug and added some clips to attach direct to the battery...no problems whatsoever.

I also like having the readout (which is backlit...nice) so that you can compare to what your seeing in the management to be sure your dead on or if you need to add offset.