Quick LTFT ?
Quick LTFT ? First time tuning. Got an 04 Goat and I just installed kooks LT's over the weekend. I zero'd my maf fail frequency, and verified a p0103.
Went out logging with my histogram this morning. Found that all the trims were predominantly 0 to -3 with virtually no variance to that.
Does that sound right? I just didn't expect the fuel trims to be so close to being right. The other question is when you go into the VCM controls to do data logging and you click the "reset fuel trims" what function is this imposing on the PCM?
Went out logging with my histogram this morning. Found that all the trims were predominantly 0 to -3 with virtually no variance to that.
Does that sound right? I just didn't expect the fuel trims to be so close to being right. The other question is when you go into the VCM controls to do data logging and you click the "reset fuel trims" what function is this imposing on the PCM?
Your LTFT's have a learn time. If you zero them out, they have the abiliity to learn faster and settle after changes, then if you would just let them be. It gives a starting point for learning. It nice to see that your Ltrims are in line, but I bet once you set the frequency back to stock you will see that they are off. I would log Dynamic Airflow to get a calibration for you MAF. Then input the averages for MAF Frequency and go from there. You can find a few spreadsheets on here that will do this automatically. I have one that all you have to do is copy your exported Log file and it will calculate a new MAF table for you.
Well, I had considered trying to run just on SD. Do you suggest not doing that? I did log the LTFT's with the maf installed and your right, they were all over the map.
The problem with running straight SD is weather will play a part in your trims. You can run SD all day long and it won't hurt anything. You might run it like it is, pay attention to your tune and monitor it frequently just to see if it changes. The maf is there to compensate for different changes in air and weather.
Originally Posted by Black02SS
The problem with running straight SD is weather will play a part in your trims. You can run SD all day long and it won't hurt anything. You might run it like it is, pay attention to your tune and monitor it frequently just to see if it changes. The maf is there to compensate for different changes in air and weather.
Correct.
If you are dead on at 30*F, then you'll be on the rich side in 80*F.
there are different ways to compensate for this in SD. If you make fuel adjustments in the IAT table, you can mount the IAT out in free air, or just wire up a tricker box for that circuit.
If you are dead on at 30*F, then you'll be on the rich side in 80*F.
there are different ways to compensate for this in SD. If you make fuel adjustments in the IAT table, you can mount the IAT out in free air, or just wire up a tricker box for that circuit.
Originally Posted by white2001s10
Correct.
If you are dead on at 30*F, then you'll be on the rich side in 80*F.
there are different ways to compensate for this in SD. If you make fuel adjustments in the IAT table, you can mount the IAT out in free air, or just wire up a tricker box for that circuit.
If you are dead on at 30*F, then you'll be on the rich side in 80*F.
there are different ways to compensate for this in SD. If you make fuel adjustments in the IAT table, you can mount the IAT out in free air, or just wire up a tricker box for that circuit.
LOTS of reading.
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Verdad Gallardo Open up the scanner and you will see a box that has your different parameters listed. ie. LTFT, O2's, ECT, ect.. If you right click in the box, you can add and delete different PIDs(PID referes to a actual reading or a calculated reading from the PCM). You will see several that you can choose from.
Originally Posted by Black02SS
Open up the scanner and you will see a box that has your different parameters listed. ie. LTFT, O2's, ECT, ect.. If you right click in the box, you can add and delete different PIDs(PID referes to a actual reading or a calculated reading from the PCM). You will see several that you can choose from.
If you want to ever want to know something and aren't sure, try the F1 key when you have either the Scanner or Editor open. Depending on the page, it will open the corresponding help file for that.