Hondata

Hello my a/F wont read richier than 11.85. At load in boost wideband shows 10.4-10.5, datalog shows stady 11.85. What can be the problem

here is my datalog and calibration. its a 4th gear pull wideband shows 11.8, datalog shows 12.19 stady. AEM wideband ran to D10.

your datalog doesnt show the problem it jsut shows that you have a steady fuel plot. I would be one thing if you had a major jump in injector pulse width without a change in air fuel but you show a gradual rise with boost and rpm which is normal so if you want to show your problem add like 25% fuel to a area of the map and datalog the cross over that area. if your a/f reads on the map no less then 11.85 but the injector pluse width goes up continually then that will display the problem also make sure your wideband is adjusted to match the s300.

I had the same problem lol. Depin ur d10 and put it in your d14 o2 plug works alot better. lmk

I've tuned a bunch of all motor cars on s300 and they all worked fine with d10. Recently i tuned a few cars on s300 and d10 sending the votage imput from the wideband and it does not reed lower than 118.12.0. Would like to know why as well? DO i need to remove some type of resistor? Everything else is et right, voltage, d10. Wideband reads the same as the s300 gauge at idle and anything over 12.0 A/f. Anyone got a valid response?

I've always had good results with D12 as an input, try D12 and double check the analog input voltage conversion table under settings. Make sure there is a 0.1uF cap at C42. Also check the rotary switch on the back of the AEM gauge, make sure its at the default setting, P0.
0V = 10A/F
5V = 20A/F
And whats with the -0.5V offset? I've never had to adjust it more then -0.1 or -0.2 volts.

Sounds similar to this...

http://www.hondata.com/forum/viewtopic.php?f=19&t=7263

i did fixed that issue. yes it is the resistors u have to remove them other wise at higher rpm the reading wont show correctly thanks for all ya help