I'm running FIC1050cc injectors but I currently have them setup for E70. I was looking to for some rough settings to start with for E85. I have noticed that my car has leaned out at idle and will not generally follow my fuel maps. Its either running rich in one spot or lean in another while cruising. I've logged my car at idle, but I don't seem to get any reading for my fuel trims. What am I doing wrong?

Also to richen the car up, does the scaling need to go up or down? I'm thinking it needs to go up? I'm also assuming I would need to change my latency values as well?

 

The scaling needs to go down to add more fuel. If you were measuring fuel trims before and no longer can then maybe your trims are maxed out? What were your trims with e70 ? Anyway i just got my e85 running today and trims are -2.5 for mid and high and 0 for low. good luck man

PS if trims were good then you should not have to mess with latency

 

I'm honestly not sure what they were with E70. I was using a modified version of evoscan v.99 and can't find any measurements. I logged today with Mitsuscan 1.5 and 1.6, and also logged with evoscan 2.0 and 2.3 beta. The mitsuscan datalogs are showing 0 in all the fueltrim readings.

 

Do you mean mitsulogger? If not you should download it and check with that or even the scantech software tool reads trims.

What is bizarre to me is on my car and from others all three tools read differently.

Do you have a wideband o2?

Something is not right if you can't read trims.

I would be careful because if you run too lean then...... Well rather not say

 

Opps, yes I mean mitsulogger.... Yes I have a wideband. At WOT its not to lean. Its rich, but at idles its lean. I know something is not right.

 

Something sounds a little off here. Are you running the car in open loop during idle and cruise?

 

Sounds like trims are off not to mention your inability to read them.

try the scantech software as that give readings in realtime when running

I'm basing my tune of Gas afr's and my car idles at 14.7 at idle and trims are less than 3 percent.

 

Which open look tables will put the car into open loop at idle? Looking at my open loop tables, all of them have been adjusted different than stock. Here is a pic of them now:



I would imagine thats part of the problem?

 

Yep, that's the problem. You have the car set to go into open loop basically 100% of the time. The ECU will neither measure nor apply any trims because that only happens during closed loop operation. This is also the reason the afr is bouncing around during cruise.

 

So should I use stock settings and see what happens?

 

If you want to use the trims to set the injector scaling and latency, then you have to return the values to stock (or something that will keep the ECU in closed loop during idle and cruise).

 

Ok I'll give it a shot.

 

on e85 what what should be the closed loop afr using a gasoline wideband?

 

14.7:1