Sounds like you need to read up alittle bit more before you dive in. I am by no means a pro tuner and know just the basics pretty much but do understand the above and what others are telling you. The long term fuel trims (ltft_) is a compilation of the adjustments the car is making to compensate for....a bad tune, weather conditions, improper scaled maf tables on low and high freq, wrong injector pulse widths etc. etc. Its either adding fuel or taking away. Ideally obviously the closest to zeroe as possilble. Keep in mind this is exactly what it says Long term....there are also short term fuel trims as well which are the instant adjustments its making a 100 times a second, the long term is kind of like the average of the short term trims. Hope that helps

If you are logging then you should have been able to see knock retard. At 19 AFR I cant imagine its not knocking. That is DANGEROUSLY lean. very bad.

Id get a tuner to straighten it out and then you can play with the tune here and there to make tweaks but not be rewriting the entire tune from scratch and learning along the way. That was were I stopped. I found so many errors in mine I didnt want to start over from scratch not having a strong enough background to be able to rewrite a tune from scratch in a reasonable time and not have to worry about blowing my motor along the way. Also didnt want to be out of a car for weeks while I was tweaking the tune and learning. To each his own. Then even if you knew the tuning process every motor and application is different too. Certain motors like more timing, certain like less etc. That comes from years experience working on the same motors.

 

fast06z06,
thanks for clearing, I do know that. it's always better to have propare tuning all around light driving and WOT.but it's so bad it's very hard and expensive down her.
thats why I tried to do some tuning for LTFT&STFT (wich I will do after I get HP tuner). but stopped as it's readjusted by the ECU and my software is not good for logging.
I know it's dangerous, I bollow a trany once in 2000.
I am not disregarding any comments, but I must understand first.

 

hi bro ...
sweet ride u have ...i know what ur going through right now ..u know why coz i went through ...i will ask u few Q : may i can help u to get a better outcome

1- i see u have 2007 with S/C ... do u run MAF only tune ..and r u running the famous60 lbs Morton deka injectors( they r famous but i have no good data for them ?

2- u say ur commanded AFR is different than actual ... have u compare ur stock maf table both high and low to the stock tune ( am assuming u didn't do the start up file)..do u see if there is any difference ..?!

3- spark advance in the area where u enter into boost ...how much timing ur running ..?

am no expert but am trying to help...

 

I think you should read up on the HP Tuners forum. It doesn't matter if you have ls1-edit or EFI Live, etc. There is good BASIC info that you are missing. If you don't learn how to tune correctly you will blow the motor up.

You might want to consider getting a mail order tune to get you started. You could just tweak that.

 

yep your right, but ls2-edit has it's own table (some not all), I tried to do that but nearly all are using HP (that's why I am planning to bay one, waiting for saving some for it).

as I said to SpinMonster, I am learning tuning FI.
I hope that nothing will happen to the engine, their is some parameters not to touch like knocking retared table.
I spok with Andy from A&A and I will do as he adviced is to increase injector follow vs voltag.

thanks all

I will keep learning from all of you.

 

Hi bro,

I need all help I can get, as I am ready to help as I can.
1-I didn't check the injector, it's from A&A with SC kit. I have summit MAF. which I tuned before the SC.

2-I stoped comparing as I didn't clear the fuel table trim yet, and I have to solve the BAP issue. dyno is hard in UAE bro.

3-11 and 12.

 

I know what you said and I said:


Its not to insult its to warn of a dangersous thing and I dont want you to crack a piston doing it yourself.

 

I appreciate that beleve me, I don't take it as insult at all, to learning is my life, maby thats way I love to do every thing my self (until a point).