afr becomes inaccurate

K-Series Programmable ECU installation questions / support issues
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olivenoire
Posts: 70
Joined: Thu Nov 15, 2012 8:00 am
Location: Luxemburg

afr becomes inaccurate

Post by olivenoire »

Hello
I've try to connect my aem afr gauge to analogue entry
Works but to slow for tuning

I've try the eld input
works too but after a while offset need to be changed then does not read below 12,46

any advice?
Last edited by olivenoire on Fri May 31, 2013 7:10 am, edited 3 times in total.
Ep3 eudm
K20a turbo
Kpro v4
The unwanted AEM 30.4100 WB AFR
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Spunkster
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Posts: 23887
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: afr becomes inaccurate

Post by Spunkster »

Can you post your calibration and a datalog showing these issues?
olivenoire
Posts: 70
Joined: Thu Nov 15, 2012 8:00 am
Location: Luxemburg

Re: afr becomes inaccurate and no boost control

Post by olivenoire »

Hi!

Thank you for your reply.
The problem occurs even with "ELD enabled" ou or in ECU option.
It seems ELD input does not goes below 1.5V.

I hope kdl and kda are understandable :)

I have an another question.
When I will be able to fine tuning my AFR, I will need to control the boost
My WG is set with a 0.4 bar spring (+/- 5.8psi). I want a final maximal pressure of 1 bar (14.5psi) depending of gear
Actually to reach 0.6-0.7 bar on fixed duty (8-10psi) I need to input "maximum boost at 100% / normally closed" with does not seems to be coorect.
Any input of fixed duty with "maximum boost at 0% / normally open" does not limit pressure...

Image


And now I've check "Notify me when a reply is posted" to have directly you answer! (I hope :) )
Anyway , Thank You In Advance for The Time you Spen to my Problem.

These steps are imperative to be solve for me be able to tune my car
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Ep3 eudm
K20a turbo
Kpro v4
The unwanted AEM 30.4100 WB AFR
User avatar
Spunkster
Site Admin
Posts: 23887
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: afr becomes inaccurate

Post by Spunkster »

Try removing the resistors described in the following post: http://www.hondata.com/forum/viewtopic. ... 452#p45452
olivenoire
Posts: 70
Joined: Thu Nov 15, 2012 8:00 am
Location: Luxemburg

Next problem, solenoide

Post by olivenoire »

My reply was post as a new topic..sorry for that

I'm really afraid to remove something inside my ECU. Don't want to brick it

I'm going to use analog input. Not very accurate but enough for the moment. I will use direct reading with my aem during boost.

I have a question about the solenoid. I have a standard mac solenoid
I'me able to use it in what I think to be the normal way, I mean 0% duty normally open

Actually I need to put 100% duty normally closed.
I'm able to tune make a boost by gear, that ok, but I really want to be on the safe or good way to do

Solenoid is now plug in this way :
Port 1 : vacumm manifold side
Port 2 : WG side
Port 3 : filter

Is it right?

Image
Ep3 eudm
K20a turbo
Kpro v4
The unwanted AEM 30.4100 WB AFR
User avatar
Spunkster
Site Admin
Posts: 23887
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: afr becomes inaccurate

Post by Spunkster »

If it is not a Hondata solenoid it is impossible to know if it the correct valve. All you can do is try it and see what is does with different fixed duty cycles.
olivenoire
Posts: 70
Joined: Thu Nov 15, 2012 8:00 am
Location: Luxemburg

Re: afr becomes inaccurate

Post by olivenoire »

You are right
Actually I'm able to control with this setup, but it seems it should be normally open

Anyway I have to move the ground of the AFR gauge and after that, AFR tune :)
Ep3 eudm
K20a turbo
Kpro v4
The unwanted AEM 30.4100 WB AFR
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