I used the method laid out in the XDF file

It's a TBI and yes, the initial timing is correct. It seems to have something to do with when I disable the EGR functionality to data log. I'm just not sure what setting is causing the timing to be...

I did some more playing with it and it seems to have something to do with turning off the EGR etc for Datalogging. When I run the normal tune with the same VE and Spark tables it seems to come out a...

It does not like the factory cal much now that it's got the new cam and heads. I'm thinking it might be the "Main Spark Bias" or "Coolant spark Bias" which are both set to 9.8'. When I have some more...

It's pretty close up to 10's which is as high as the markings go on timing marker.

Not that I'm aware of. It's a band new sensor, I'm not getting any codes and I get occasional Knock detected. I do have all the EGR stuff turned off for purposes of data logging not sure if that...

Hi All, I'm hoping someone can help me with this question or point me in the right direction. There seems to be a disconnect between what I set my SA to in the main spark table and what I'm actually...

There definitely is. Excel is kind of my thing. There is so much you can do with it. I've been using it daily for 15+ years and I still learn new stuff all the time. So, I like the idea of doing more...

Ok, so I was playing around with your spreadsheet and I have some questions. Not so much about the main functionality of the spreadsheet. I think I've figured that out and it's pretty straight...

I've got that thread saved and will be reading through it. Good to know about the BLM swings.

Decided to go with the AEM 30-4110 should hopefully be here this weekend. Whether or not I'll have time to install it is another question.

I am seeing a lot of fluctuations in my BLM readings...

WB is definitely on the shopping list. Just trying to figure out which one to go with. Right now I'm leaning towards the AEM 30-0300 because the price point seems decent. I'm also considering the...

I was watching my second log file it looks like the spark advance spikes at tip in. Again, I'm not sure if this is just an issue with the data log or something real. But here are screen shots of the...

Thanks. So, I get the BLM numbers in the top section and I have the spread sheet to adjust those. But what are the numbers in the green section?

I'm also curious about the spark advance you've...

It's been pretty busy so I have not had much time to datalog. I got one log in the other day. I adjusted the VE maps based on this and will try and get another log going.

I found this PDF which I found very helpful in giving a very basic understanding of tuning the GM EFI. So, I figured I'd post it here for anyone who might stumble onto this thread. It answered a lot...

There was a good video on YouTube I found a while back. Don't hold me to it but from what I remember the model years that are the same are 93-94, 95 (single year only), 96-99. After that I stopped...

Haha you and me both. It took me about a day to figure that out. Everything was telling me it should be $0E and that it was only used in HD trucks with the 4L80E. But I guess GM didn't pay attention...

Right there are already good tutorials out there like the one from EagleMark. But what I'm trying to figure out is why are we doing this. What does adjusting your VE do to the engine.

Does it...

It's a 1994 C1500 with a 305 and 4L60e. the PCM is 16196395 and the bin is BHMD. The engine is stock. I did add some shorty headers, high flow cat and did the Ultimate TBI mod. I did add a TBI spacer...

Hi all, I'm totally new to the TBI tuning (or tuning in general) and I'm just trying to figure out the basics. I've been reading a lot of different threads and post but they all seem to assume that...

Editing this post. I must have been doing something wrong when I was trying to save my stock bin off the memcal. For some reason it kept saving it as a 32kb file instead of a 64kb file. After many...

Thanks Tayto.

Hi All, new member here. I have a quick question that will probably be easy for someone. I'm new to OBDI tuning and have been trying to figure things out. I was looking through the Bin and definition...

Hi, I joined this forum because I'm trying to learn a little about tuning and tuner pro. I have 1994 C1500 RCSB with a 305. It's currently stock but I'm looking to do some upgrades to is soon though....