Hello just installed a FF sensor to my 2004 silverado. I am running a p59 OS 12587603. Copied the flex fuel tables from a 2004 Tahoe. The problem im having is when i load up the scanner and add alcohol percent it read 0 never moves. I will put tune in here also. Can you someone look at tune and see if i did something wrong? Thanks!
try this one
with the file name of blue waffle, id never open that fileOriginally Posted by pudman85
HAHA ya didnt think that threw lol
I didn't even look at that part, LOL! I noticed the .hpt extension and just sent it, it's all good, meaning it is a proper .hpt file.
Did you turn on the appropriate DTCs?
No i did not. Wasnt aware that i needed to. Would you happen to know what ones i need to turn on. I will google it too. i have been tuning some gen 3 stuff for a couple years now but this is my first Flex fuel sensor. Thanks!
There are stock L59 files in the repository. -> https://www.hptuners.com/my-account/tunerepository/
Unfortunately, the only way to know if a 5.3L file is LM7 (8th VIN 'T') or L33 ('B') or L59 ('Z') is to download and then open to check the VIN.
GM Gen4 Injectors v2.1.xls
ChatGPT is the end result of someone assuming that if they gather up a large enough pile of sh*t it will spontaneously generate a pony.
So do i need to pull the L59 tune and retune it to my truck for the flex fuel to work?
yes.
you have to tell the ECM it now can use E and then you have to set it up so it can use the E
Thast why you download a file, and use it as a compare file to make the necessary changes
By this he doesn't mean write the L59 tune to your ECM, he means modify your existing tune to the appropriate setting from the L59 tune. At least I think that is what they are saying.
Ask and you shall receive. Two different years, same "Z" engine, different OS's yet no differences between the two using compare.
04 Tahoe 5.3 Flex 16492813895.hpt
2005 Avalanche Flex Fuel.hpt
Last edited by TheMechanic; 08-22-2024 at 02:37 PM.
hptuners lacks proper definitions to enable FF on a non FF car, at least on this OS.
Did you try the file I posted?
No. Im gonna try that first before i go the other route. Just wanted some options.
With a name like pudman, I'd never shake hands LOL
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IT WORKED! Thanks man for taking the time to adjust that. THANK YOU!!
excellent, glad it worked! Let me know if you run into any FF type of issues, but everything looked good from what I could tell.
Hey man sent you a DM.
Does anyone have a FF enabled tune for Fbody OS w/ a manual transmission?
just wanna say as a side note, blind squirrel your posts are an absolute lifesaver. so much knowledge! keep it up man you're greatly appreciated
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