EGR Delete OBD1 1994 Corvette

**lesman** · 03-25-2023

I tried downloading the file but its doesn't load as a valid ZIP file but a RAR file with a ZIP extension add on. When I remove the zip extension and decompress it, it is EEHack executable only. I do not see any XDF file. Where can I find the correct file noted in the forum?
If it is not available any more, how do I manually add the parameters in Tuner Pro?
Is there a way I can create a new scalar in the program and add them that way? and if so, what would that process be?

Edit:
I found the XDF file that has a lot of the information you referenced. Also some other EGR settings that could be changed. I am still getting a duty cycle graph on the logger but I did not find the XDF till after I made my trip. It was not the one you referenced on page 10 but the XDF on page 6, version 5.
I will change the settings and give it another shot.

**NomakeWan** · 03-26-2023

The XDF file is attached directly to the post I linked. It's the XDF that you'd want to edit the BIN. There's no reason to grab that modified EEHack executable if you aren't planning on using the custom patches. Just download the attached XDF by itself.

**lesman** · 03-31-2023

The EGR duty cycle has stopped logging. I changed the settings from the list above and it worked. There are no calls to the EGR cycle or AIR pump anymore.
I do have other questions on the tune but by me being new to the forum, I do not know if I need to start a new thread or continue on this one here. Its not topic related but a Tuner Pro patch question on the Y body O2 calcs and the Y body MAF calcs. Are these OK to load in my tune? I would also like to load a data run and have some information on what might need to be adjusted or if the systems looks ok.

**steveo** · 03-31-2023

you should already have the y body o2 and maf tables loaded in a stock corvette bin

**lesman** · 04-02-2023

The first values are my default BIN from my Vette. Now these may have been modified by the HyperTech programmer that I have when I adjusted the fuel for higher octane. The tool they sold for the C4 94-95 LT1 was very limited but I guess for back then it was great. Default octane rating from factory was 89 but this tool moved it up to 91 - 93. It also firmed up shift point and various curves but as I said very limited. Mainly yes or no questions but there was some data entry areas that I did not fool with. Power Programmer Plus. They are right around the corner from my house.
This is a comparision of the bin file taken as backup and the patched file from Tuner Pro. the right hand side is the Tuner Pro patch.
Which ones would be more effective?
patched O2-MAF.jpg

**NomakeWan** · 04-02-2023

I've seen the Hypertech """"tune"""" from the device for the 94-95 Corvette, as my '94 Corvette's previous owner had used it. It's garbage, like most of Hypertech's stuff is. You'll be glad you're just doing the tuning yourself.

I did save a copy of the changed BIN just for reference, but then promptly undid Hypertech's changes and just implemented my own instead.