babaz7

ok guys im giving this another shot but this time i need all of you help and expertise on helping me set my fuel trims correct...please try to help me as i cant do this by my self!

ok so i'll ask alot of questions so bear with me and expalin to me in the most simple manners...

so how do i set the fuel trims?
do i have to reset the ecu after every new injector scaling settings?
do i have to set the fuel trim low first or fuel trim mid?
and do i have to be close to 0 as possible?

right now i have FIC 1250cc injectors and are scaled to 1271 but i get a reading of -12.4 on both the low and mid...what do i do now?

my latency settings are..

voltage...........ms
4.69 ..............4.008
7.03 ............ 3.069
9.38 ............2.208
11.72 ...........1.512
14.06 ...........1.056
16.41 ..........0.816
18.68 ..........0.648

please try to help me i'll post my logs after each run...

wizzo 8

iTrader: (35)

I personally think your scaling number is to high. Usually its lower than the actual injector size. If I remember correctly lowering your scaling will bring both trims more positive. I may be confusing this with latency though

babaz7

i will try that,but can you tell me do i need to reset the ecu for every time i change scalings?

Raptord

iTrader: (10)

If both trims are off by roughly the same amount then it's scaling you need to play with. Increasing your injector scaling should bring your fuel trims closer to where they should be. It's odd that your scaling is already so high though, like Wizzo said your scaling value should be ~15% lower than your injector size. Are you sure you're on 1250's? That scaling looks more like one from 1450's or 1550's. I'm wondering if your MAF might also need recalibration?

To reset the ECU just disconnect the battery for a few seconds.