1994 LT1 tuning Issue

[Caleditor]

Thanks everyone for your patience with me.

What is EE-B? and how do I determine that I have it.
B is Version B correct?

I switched to EE-B and my VE table is not what I expected to see.

[dave w]

EE-B was for the LT1 Chevy Caprice and Buick Roadmaster models.

dave w

[EagleMark]

It's been awhile since I've seen an $EEB and did some testing and found an $EE file flashes in just fine so I no longer use $EEB.

It came in early production 94 LT1 vehicles mostly the Roadmaster but some have reported in other F body cars.

The easy way to tell is open the bin with $EE definition and look at the Injector Flow constant and $EE will be 24.8xx Lb/hr. If it is IIRC 717.xx lb/hr you have an $EEB mask. There are other differences and I think VE table is one. So check you first original file for Injector Flow rate.

Like I said the $EE bin file flashes fine to $EEB PCM are the same. If you have an $EEB find a similar vehicle description $EE and start there and full flash. If it's a transplant engine does not matter much. All the work done to masks have been done to $EE so if you want some of the improvements made over the years which have been many lately, then use $EE. The updated TunerPro RT XDF has many things not included in TunerCat definition.

[Caleditor]

Thanks
I have an EE file. I looked at it in hex.

[EagleMark]

$EEB in hex still says EE... Look at injector flow constant.

[lionelhutz]

I didn't see anything that looked off when I opened the first file you posted as EE. Opening and EE file with an EEB definition screws up the cylinder volume and injector flow rate and I believe the start of the MAF table will come out as some high value before it starts to look right. I have no idea what an EEB file looks like when you open it with an EE definition since I haven't run across an EEB application yet.

Still, someone might have "tuned" the EEB stuff back to the "correct" values using an EE definition so it really would be a good idea to start with a good known EE file.

[EagleMark]

Still, someone might have "tuned" the EEB stuff back to the "correct" values using an EE definition so it really would be a good idea to start with a good known EE file.

This is a good point! You may have read the PCM with an all ready corrupted $EEB to $EE file, this would really impair your tuning abilities!

I like to start a vehicle with the cal it came with from factory and always ask if it has ever been flashed. If so I start with a new stock updated cal from GM. If they say no I still do a compare with known good cal to see how many things may have been messed with before they got vehicle and are un-aware of.

[Caleditor]

1111.jpg

Thanks Mark

I will try to start over. I even have a spare PCM if I need to swap it

1275 byte differences

0 under tunable parameters

[EagleMark]

Thanks goes to lionelhutz, it was he who brought up a subject we should have covered!

1275 bytes in undefined areas is huge! Sounds like you do have a corrupt bin you started with? Hope so!

[Caleditor]

Thanks goes to lionelhutz, it was he who brought up a subject we should have covered!

1275 bytes in undefined areas is huge! Sounds like you do have a corrupt bin you started with? Hope so!

I loaded up everything to flash the PCM and clean the plugs. It's snowing here, so I left a few minutes early. As I was clocking out a guy called me about a tune. He said I might even know the car. It's a Yellow Northstar Fiero. Of corse he was calling my Wisconsin phone number. The guy is just 10 miles from me and yes it's my old car.
Anyway I forgot the Tech II.

Well it will be another day

I will post up the file that I install from TIS, if TIS will program it

[lionelhutz]

I hope that's what it ends up being. At this point, I'd have to believe it's either something mechanically wrong or the bin is screwed up. I have a stock 94 Firebird EE bin I pulled a 6-speed car if you want it.

[EagleMark]

He does, we were talking on phone earlier and we did not have one in the $EE section. So if you attach it here I'll put it there too!

[EagleMark]

I also just did some comparing of your 1994 F-body Mod.bin and 1994 LT1 Readout.bin and they are no way the same or was corrupted somehow? Also compared the 1994 F-body Mod.bin and it was also corrupted to any LT1 file I used.

So you do have an issue. Not sure what program your using to make changes but half of them were off by a line or 2 in hex...

[lionelhutz]

I don't have them here, but I have also ones listed as being from 94 and 95 Firebirds, Impala's and Vette's. I think you've got all the ones from the DIY-EFI repository in the '8051 PCM thread and the ones I have don't match those file names so I have no idea where I got them from. I doubt I'd have renamed them so I likely just downloaded them with the names like I have them. I'll look at them again and maybe they're worth posting here too.

I'll get the 94 Bird one I pulled from the car myself posted tomorrow for you.

[dave w]

I read this 94 Firebird .bin file.

dave w