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View Full Version : Help for the new guy


Flocky
February 1st, 2025, 08:02 AM
Hi everybody. I'm trying to understand efi live. I really need it to adjust a small thing on my truck, I don't want to tune it or anything. But for my needs it seems almost insane to spend over 650$ for a flashscan that I would use 1 time when I have a expensive labtop that can run the software. Is it possible to do everything I need to do with my laptop and a obd to usb adapter? Again, I'm extremely new to this so If it sounds like I'm talking something crazy don't mind it. its just I don't plan on doing anything with it like tuning etc. I just need to adjust something for my truck. I've already played around with a tune I downloaded from somebody to emulate what I need to do. is it possible to do it with laptop? Thanks.
nonnieselman
February 1st, 2025, 12:30 PM
What vehicle are you working with?
Flocky
February 1st, 2025, 03:31 PM
Its a 2005 gm 2500hd with the diesel engine
nonnieselman
February 1st, 2025, 03:42 PM
what are you trying to adjust?
Flocky
February 2nd, 2025, 05:11 AM
Something in engine operation. Just trying to see if i can use my labtop for this.
nonnieselman
February 2nd, 2025, 05:39 PM
Something in engine operation. Just trying to see if i can use my labtop for this.

You can use your laptop but you have to have a interface between laptop and OBD port. Just a usb cable to OBD doesnt get you anywhere.
Flocky
February 2nd, 2025, 05:45 PM
You can use a interface to get it it to work? I was under the impression a autocal or flashscan was needed as the interface?
nonnieselman
February 3rd, 2025, 03:41 PM
You can use a interface to get it it to work? I was under the impression a autocal or flashscan was needed as the interface?

YEs thats what i meant. You will need some type of interface wether it be EFI Live Flash Scan or HPT MVPI to be able to read the tune and make changes.
Flocky
February 3rd, 2025, 03:53 PM
Thats a bummer. A j2534 passthrough I could of gotten my hands on for free.
nonnieselman
February 4th, 2025, 06:16 AM
Thats a bummer. A j2534 passthrough I could of gotten my hands on for free.

You wouldnt have been able to read the tune, change it, and flash it back in with a J2534.

The reason EFI Live cost what it does, they have mapped out all the binary coding into a GUI and give you the ability to read the tune off the ECM, use the Software GUI and make changes, then the ability to flash the ECM.

If you know how to read and change Binary code then you can hack into the ECM yourself and change what you want.