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De tune big injectors?

 
Old 12-30-2018, 07:10 PM
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Default De tune big injectors?

Total newb question, can I run deka 80s on a NA motor and have tuner tune them down until I go turbo?
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Old 12-30-2018, 08:21 PM
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You posted this twice
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Old 12-30-2018, 08:28 PM
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Originally Posted by G Atsma View Post
You posted this twice
yeah I'm still trying to get a handle on this site. I tried deleting it.
i apologize
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Old 12-30-2018, 08:45 PM
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Look at the bottom of the post. Hit the "Edit" button and you will be given options to edit/delete. There will be 2 places to hit delete. Hit both of them. Done! Have a good one man!
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Old 12-30-2018, 09:49 PM
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Originally Posted by Skerrt View Post
Total newb question, can I run deka 80s on a NA motor and have tuner tune them down until I go turbo?
Any injector that can be tuned for FI can be tuned for N/A. You need to do a lot of reading.
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Old 12-31-2018, 03:32 PM
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Originally Posted by gametech View Post
Any injector that can be tuned for FI can be tuned for N/A. You need to do a lot of reading.
Exactly why he said total newb question. OP to answer the question yes, the min injector pulse width will need modified, but it should be anyway. It is not the best way to go. To me, it is better to run a appropriate sized injector (say 36 or 42#) and swap to the 80's or 210's or whatever, when you actually need them. It will need a tune at that point anyway. JMHO There is a LOT to learn, and reading all over will help.
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Old 01-01-2019, 12:01 PM
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Default Min PW for Injector Operation

Hi SK, the above "injector tuning" tech is incorrect.

I work with Siemens, the Deka IV 80# lbs has a Minimum PW of .813ms based on Fuel Pressure.

Many other Fuel Injectors have Min PW that is MUCH HIGHER (1.1-1.56 as an average)

When the Min "turn on time" is NOT met the engine will Missfire.

Lance
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Old 01-01-2019, 12:23 PM
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Yes, no problem
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Old 01-01-2019, 12:42 PM
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Originally Posted by pantera_efi View Post
Hi SK, the above "injector tuning" tech is incorrect.

I work with Siemens, the Deka IV 80# lbs has a Minimum PW of .813ms based on Fuel Pressure.

Many other Fuel Injectors have Min PW that is MUCH HIGHER (1.1-1.56 as an average)

When the Min "turn on time" is NOT met the engine will Missfire.

Lance
And I have run them at .490ms, and so have MANY others without issue, so maybe thats what they say, but I don't go by what they say, I go by what works. As I said, Its not the best way to do it.
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