Open Loop Load #1
Open Loop Load #2
Open Loop Throttle #1
Open Loop Throttle #2

nulled these values and also from periphery bits set bit.4 'allow closed loop' to 0

results: seems the car doesn't listen to the map, as there are 14.7 values at idle loads and my wideband readings are between 13.1-13.3
also rpm bounces on idle

tried to dicrease by 50% all the cells in 'Idle Stability Timing Control' table but no luck

any suggestions what I'm doing wrong ?

p.s. car evo 3 with evo 8 ecu

 

A better way would be to set FAA Bit 4 to "0"

Regardless, tuning Open Loop is very intensive for idle and cruise operations. There are many factors you must account for and they will be based on the MAF Scaling/Maf Compensation, Injectors Scaling, Injector Battery Voltage, Timing etc.

Once those are straight, the adjustments on your fuel map will start "working." I would log your trims with regards to WBO2, STFT, idle, cruise, part throttle, lift-off---basically a long log.

Then, make those adjustments on the fuel map in the respective areas.

Buiding a drag setup? Not liking how the ECU handles massive airflow mods when running the MAF? Me too heh.

Good luck man.

EDIT: Stay away from tuning the WOT/High load/High HZ areas if your WOT pulls are in line. Stick to cruise/idle/low load and find a happy medium. Your AFR's will swing around stoich as there is no ECU compensation for uncontrollable air-flow changes--depending on how far from stock style cams/piping/turbo/exhaust/fuel your are using.

 

^

as in my first post, FAA bit.4 is set to '0'

you want to say, if injector or maf scaling are off, ecu won't read from the map in open loop ?

 

OK. Read right through the FAA part lol. Your maps will look goofy if your scalings are off and may require tuning that exceeds upper and lower limits if your scalings are off. You've got the EVO3 running an EVO8 ECU, so I'm sure you understand what I meant-nuff said.

I lost my long and drawn out post/so I'll sum up :/

Post your full mod list to include your MAF/model, Fueling, Turbo, Cams, etc.

You need to get a good baseline first for your MAF scaling/compensation and work from there. Injector scaling should be pretty trivial because there is so much information floating around.

I'll be in and out, but I'm sure someone has experience with the EVO 1-3 fueling/sensor hardware.

 

stock E3 MAF, stock turbo, stock cams and stock 510cc injectors & walbro

here are the scalings (dunno if they are correct)

as about trims, they're frozen you can check my recent thrad ))) https://www.evolutionm.net/forums/ec...-changing.html

 

eh can you change your MAF COMPENSATION Data Value Scaling (top one) to uint8 or percent128 and repost a picture?

 

here it is, changed to unit 8

 

try this as a starting point.

lol i see you went through this already heh. deja vu

 

double post:

make sure to adjust the 15-50 hz values ON THE MAF SCALING to get your idle afr's in check.

you may need to pull back a decent amount on those areas as I had to for my 2g MAF.

if your adjustments aren't doing too much, bring them back up and pull incrementally from the MAF Compensation and then go back and make fine tuning-adjustments on the MAF Scaling.

First get the thing to idle stoich. Plug in/turn your O2 sensor back on too and log your idle stft's to keep them at least -4 to +4 maybe even 5's.