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I have actually used both Tuning School and ERM and I like ERM way more than Tuning school. ERM does a great job of teaching you how to tune and to actually understand what you are doing with the...

I have an issue in 4th gear where it gets really rough when I'm just cruising, or when I try to get on it. I have a log of it and it's a long tune, but it happens at the 21:26 mark of the drive. I...

Why do you want the permanent codes out of there? If you're in an emissions state, they won't cause your test to fail as long as the CEL isn't on. Unless you just don't want them there, I don't think...

That's right. You should be able to find a table that matches your file and you should be good to go.

I've been experimenting with tuning via wideband or LTFT. I noticed that the error graphs are a little different. They're not drastically different, but they are off a little. For example on wideband...

You definitely need to find out what he wants you to log.

I appreciate your help with this. I feel like I learned a lot about how much I didn't really know what I was doing. I'm going to go back and tune the MAF and VE table with the wideband now that I...

Here's a log of what I assume I need to do for wideband VE tuning.

I turned off LTFT in the scanner, not in the tune.

69064

I'm not going to make any changes until I'm sure I understand what...

I've read a bit on wideband tuning since you posted earlier.

I want to make sure I have this correct...set up the VE table in the scanner, but use eq ratio error instead of LTFT?
Turn off the...

I was using fuel trims. I turned off fuel trims like you said, and it stayed all zero's. As soon as I unclicked the fuel trim off button, it started populating, so that explains why I was getting...

Well this is confusing me then. What would cause it to change from 0's to -3% after driving around my neighborhood for 2 minutes?

Got it. Thanks for that.

So instead of resetting them every time, just turn them off? I'm assuming I would just do that every time through the controls in the scanner. Sorry if this seems stupid, but I'm learning as I go.

I just did another log without any filters and it's doing the same thing. It almost seems like there is a start-up process that goes through a cycle before the VE table kicks in. I'm looking through...

I don't know if that's the issue. It will populate with a zero for the first couple minutes, and then go back and populate with a different number. If it's the filter, it wouldn't populate at all....

So I've noticed a strange issue. I'm doing some VE tuning on the street and I noticed that for the first minute or so of the drive the table shows all 0's. After a minute or so (usually after having...

Should I reset the fuel trims every time I make changes and log data again?

I made the changes that 07GTS pointed out and I'm no longer having that problem. I changed the PE ratio to about 11.5 and ramp in to 1.5, I might raise it a little higher. I definitely noticed the...

I've been learning to use HP Tuners myself, and the best information for me has come from reading these forums and asking questions about things I'm not sure about. There are a lot of people here...

So I'm getting more and more comfortable doing all the tuning, and I have a question about the MAF and VE tuning. Is it best to tune them both on the same day? I ask this because I know air...

Yeah, that's what happens when you pay a shop in Houston to tune your car. That's the reason I have started to tune myself. Thanks for reminding me to change that low-octane table back to normal.

Sounds good, thanks a lot for your help.

I have one other question regarding this. When I'm logging data for the MAF tuning, I use filters to filter out the data from letting off the gas and what not. It's my understanding that the MAF...

Thanks for that. I will mess with those numbers and see how it responds.

I'm very new to tuning, and have just finished MAF tuning and returned the tune file back to normal (PE, DFCO, etc) after making my airflow changes. I took it out to see how it was running and now...