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Need info/data on GM 60lb injectors please

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Old May 2, 2025 | 02:21 PM
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Exclamation Need info/data on GM 60lb injectors please

I searched on here and couldnt find any info, but data on the Siemens deka brand. i need the data to input into hptuners as a friend is upgrading his ls1 motor and needs injectors and found a set for under $300.
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Old May 2, 2025 | 02:33 PM
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The following are several different data sets that have all been claimed to be "correct" gm data. I never did a direct swap from stock injectors to 60lb injectors with no other tune changes to see which data is truly closest to correct. I will say the data listed for the short version is definitely not good for the long injectors.
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Old May 2, 2025 | 02:38 PM
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Originally Posted by gametech
The following are several different data sets that have all been claimed to be "correct" gm data. I never did a direct swap from stock injectors to 60lb injectors with no other tune changes to see which data is truly closest to correct. I will say the data listed for the short version is definitely not good for the long injectors.
thanks gametech for uploading the spreadsheets. i'll take a look through them and check them out.
could you elaborate or rephrase what you meant by "short version is definitely not good for the long injectors"? are you referring to the overall length of the injector?

edit-i didn know the deka were meant to be similar or cloned gm injectors.
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Old May 2, 2025 | 03:13 PM
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Here's FIC LS2 style 60 lb injector data

Attached Files
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Old May 2, 2025 | 03:33 PM
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From: Stockbridge GA
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Originally Posted by fst100
thanks gametech for uploading the spreadsheets. i'll take a look through them and check them out.
could you elaborate or rephrase what you meant by "short version is definitely not good for the long injectors"? are you referring to the overall length of the injector?

edit-i didn know the deka were meant to be similar or cloned gm injectors.
Yes, overall injector length. The ls1 length injectors are different than the newer, shorter injectors. Back when I was still using 60lb siemens/mototron injectors in my ls1, I was trying to find the best data, and accidentally inputted the shorty data once. The volt vs kpa vs flow numbers were definitely not a good match for the long body injectors.
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Old May 2, 2025 | 03:36 PM
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ok thanks for the clarification, i checked each file and i dont think i saw anywhere whether these are high or low impedence or assume they're all high?
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Old May 2, 2025 | 03:46 PM
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From: Stockbridge GA
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Originally Posted by fst100
ok thanks for the clarification, i checked each file and i dont think i saw anywhere whether these are high or low impedence or assume they're all high?
Siemens/deka 60lb injectors were all high impedance. That is why they were popular for a long time. Low impedance injectors don't work with the factory PCM. And back before aftermarket injector data for gm was available, they were the biggest injectors that could be easily tuned around to be "good enough".
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