jeff_man

iTrader: (7)

What is X???

Is there a way to mathmaticly remove or add fuel? I know there is no perfict math but anything to get my closer as randomly pulling fuel the drving the car is not working.

example: i'm at 10.234ms of fuel at 3000rmp 180kpa and seeing 9.8:1 and need to be at 11.5:1.

555cc injectors.

hustler

iTrader: (6)

Calibrate your IAT sensor settings like I told you or you're going to do this every time you drive the car when the weather drops 5*f.

Braineack

iTrader: (62)

weight.

12.5:1 means that for every kg of air, 0.08 kg of fuel is mixed in and vaporized.

jeff_man

iTrader: (7)

And like i told you my IAT table is running the y8s vales like every person with a miata adaptronic and a GM IAT. Every morning this week i have checked what the ecu see vs ambient temps before starting the car and it has been spot on. Afrs are that same at wot all week weather it was 70* out open road driving in the morning or 95* and car has been sitting in traffic. You can't calibrate it like MS with the cool 3 data points.

Not discressing or ignoring your advice, i spent a few hours Sat looking into it.

2300 loaded, any math for kg to ms?

hustler

iTrader: (6)

I didn't know you did that, it was a long weekend.

jeff_man

iTrader: (7)

Did the same with water temps before you saw the car 2 weeks ago. I triple checked all the calibration and correction tables i could vs y8s info and other maps from similar cars.

y8s

iTrader: (8)

close enough way:

DAFR: desired AFR
AFR: measured AFR
PW: pulsewidth
NPW: new pulsewidth

change in fuel multiplier ~= (AFR-DAFR)/AFR
(will be negative if you need to remove fuel)

you multiply this by your PW to get the amount to ADD to the PW.

so if you want to get from 9.8 to 11.5....

(9.8-11.5)/9.8 = -.173

NPW = PW + PW*(-.173)

or in your case:

NPW = 10.234 + 10.234*(-.173)

NPW = 8.464 ms

for the Adaptronic, you have a VE table. Just replace NPW and PW with NVE and VE.

jeff_man

iTrader: (7)

Love you, will try this, my only problem is 3k to 6k being to rich, rest of the map is great. I also no know thing about VE tables you speak of.

Faeflora

iTrader: (2)

The just select the 3-6k columns and execute the math function on those columns. The math function would be to multiply by .85 to reduce fuel 15%

y8s

iTrader: (8)

practically speaking, yes you can subtract from 1 (or 100%) and use that value and the "multiply cells by" function in the fuel map.

jeff_man

iTrader: (7)

Thread is void. enrich and go open loop was at 24%, removed that and added some fuel back and gtg

Faeflora

iTrader: (2)

Yay jizzm