Rev match downshift possible with OFT

[OmarYasin]

Originally Posted by steve99

Hi, read the info on logging and E85 tunes below

Log your fuel trims and see what your LTFT looks like at low rpm if its over 10 its either still learning (should only take 15 minutes) as per learning info drive smooth and steady for 10-15 minutes should sort it , do you have stock intake aftermarket intakes can cause problems.

Drop filter, inlet tube and modded snorkel

[OmarYasin]

Originally Posted by steve99

Hi, read the info on logging and E85 tunes below

Log your fuel trims and see what your LTFT looks like at low rpm if its over 10 its either still learning (should only take 15 minutes) as per learning info drive smooth and steady for 10-15 minutes should sort it , do you have stock intake aftermarket intakes can cause problems.

so I just re flashed again, after I left it idle for 5min this is what I saw on tablet, how does it look at idle, idk how to read it all I know about is afr and what to expect under loads?

[Simon99]

Just drive the car smoothly so the ltft goes below 10

[OmarYasin]

Originally Posted by Simon99

Just drive the car smoothly so the ltft goes below 10

Drove around and is at 10.93 at idle as of now

[Lytheum]

Mine has high ltft at idle but is within a couple % at cruising and wot. Wouldn't worry much if its only high at idle speeds.

[steve99]

Originally Posted by OmarYasin

Drove around and is at 10.93 at idle as of now

@OmarYasin @Lytheum , high fuel trims at idle only unlikely to cause any serious issues other that hesitation or bogging when you first get on throttle.

if you stock intake ect then maf scaling in that area is only fix if your keen see links below

[OmarYasin]

Originally Posted by steve99

@OmarYasin @Lytheum , high fuel trims at idle only unlikely to cause any serious issues other that hesitation or bogging when you first get on throttle.

if you stock intake ect then maf scaling in that area is only fix if your keen see links below

Actually I reflashed and drove 54miles shifting no more then 3500 and its feeling alot better then yesterday, I dont usually have any issues, I also filled up e85 today, so maybe this isnt the thread for this im sure I can find it but exactly what is maf scaling? More air coming in?

[steve99]

Originally Posted by OmarYasin

Actually I reflashed and drove 54miles shifting no more then 3500 and its feeling alot better then yesterday, I dont usually have any issues, I also filled up e85 today, so maybe this isnt the thread for this im sure I can find it but exactly what is maf scaling? More air coming in?

maf is mass air flow sensor, rescaling it reduces the fuel trim corrections needed by the ecu to account for maf being out of calibration see the links below

dont try maf scaling on E85, wait till you back on petrol.

[Lytheum]

Originally Posted by steve99

@OmarYasin @Lytheum , high fuel trims at idle only unlikely to cause any serious issues other that hesitation or bogging when you first get on throttle.

if you stock intake ect then maf scaling in that area is only fix if your keen see links below

Trims are fine at idle on 93 but e85 seems off there. They are good everywhere else...never noticed any issues.

Stock intake with shortened snorkel and k&n drop in.

[steve99]

Originally Posted by Lytheum

Trims are fine at idle on 93 but e85 seems off there. They are good everywhere else...never noticed any issues.

Stock intake with shortened snorkel and k&n drop in.

Trims will move arround on E85 due varying ethanol content (as long as they say under 10% your pretty good) thats normal, if they are good on petrol all is ok.

[OmarYasin]

Yeah I can see that, yesterday was jumping frm high 8s to 10s?? Im keeping my eye on it for a couple more days